TMS320F2812PGFA

TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 Digital Signal Processors Data Manual PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Literature Number: SPRS174T April 2001 – Revised May 2012 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Contents 1 TMS320F281x, TMS320C281x DSPs 1.1 1.2 2 Introduction 2.1 2.2 2.3 2.4 3 ...................................................................................................................... 12 Description ................................................................................................................. Device Summary .......................................................................................................... Pin Assignments ........................................................................................................... 2.3.1 Terminal Assignments for the GHH/ZHH Packages ....................................................... 2.3.2 Pin Assignments for the PGF Package ...................................................................... 2.3.3 Pin Assignments for the PBK Package ...................................................................... Signal Descriptions ........................................................................................................ Functional Overview 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 ..................................................................................... 10 Features .................................................................................................................... 10 Getting Started ............................................................................................................. 11 .......................................................................................................... 26 Memory Map ............................................................................................................... Brief Descriptions .......................................................................................................... 3.2.1 C28x CPU ....................................................................................................... 3.2.2 Memory Bus (Harvard Bus Architecture) .................................................................... 3.2.3 Peripheral Bus .................................................................................................. 3.2.4 Real-Time JTAG and Analysis ................................................................................ 3.2.5 External Interface (XINTF) (2812 Only) ...................................................................... 3.2.6 Flash (F281x Only) ............................................................................................. 3.2.7 ROM (C281x Only) ............................................................................................. 3.2.8 M0, M1 SARAMs ............................................................................................... 3.2.9 L0, L1, H0 SARAMs ............................................................................................ 3.2.10 Boot ROM ....................................................................................................... 3.2.11 Security .......................................................................................................... 3.2.12 Peripheral Interrupt Expansion (PIE) Block ................................................................. 3.2.13 External Interrupts (XINT1, XINT2, XINT13, XNMI) ........................................................ 3.2.14 Oscillator and PLL .............................................................................................. 3.2.15 Watchdog ........................................................................................................ 3.2.16 Peripheral Clocking ............................................................................................. 3.2.17 Low-Power Modes .............................................................................................. 3.2.18 Peripheral Frames 0, 1, 2 (PFn) .............................................................................. 3.2.19 General-Purpose Input/Output (GPIO) Multiplexer ......................................................... 3.2.20 32-Bit CPU-Timers (0, 1, 2) ................................................................................... 3.2.21 Control Peripherals ............................................................................................. 3.2.22 Serial Port Peripherals ......................................................................................... Register Map ............................................................................................................... Device Emulation Registers .............................................................................................. External Interface, XINTF (2812 Only) ................................................................................. 3.5.1 Timing Registers ................................................................................................ 3.5.2 XREVISION Register ........................................................................................... Interrupts .................................................................................................................... 3.6.1 External Interrupts .............................................................................................. System Control ............................................................................................................ OSC and PLL Block ....................................................................................................... 3.8.1 Loss of Input Clock ............................................................................................. PLL-Based Clock Module ................................................................................................ External Reference Oscillator Clock Option ........................................................................... Watchdog Block ........................................................................................................... Low-Power Modes Block ................................................................................................. 4 Peripherals 2 Contents 12 13 14 14 15 16 17 27 32 32 32 32 33 33 33 33 34 34 34 34 36 36 36 36 36 36 37 37 37 37 38 39 41 42 43 43 44 47 48 50 51 52 52 53 54 ....................................................................................................................... 55 Copyright © 2001–2012, Texas Instruments Incorporated TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 5 32-Bit CPU-Timers 0/1/2 ................................................................................................. Event Manager Modules (EVA, EVB) ................................................................................... 4.2.1 General-Purpose (GP) Timers ................................................................................ 4.2.2 Full-Compare Units ............................................................................................. 4.2.3 Programmable Deadband Generator ........................................................................ 4.2.4 PWM Waveform Generation .................................................................................. 4.2.5 Double Update PWM Mode ................................................................................... 4.2.6 PWM Characteristics ........................................................................................... 4.2.7 Capture Unit ..................................................................................................... 4.2.8 Quadrature-Encoder Pulse (QEP) Circuit ................................................................... 4.2.9 External ADC Start-of-Conversion ........................................................................... Enhanced Analog-to-Digital Converter (ADC) Module ............................................................... Enhanced Controller Area Network (eCAN) Module .................................................................. Multichannel Buffered Serial Port (McBSP) Module .................................................................. Serial Communications Interface (SCI) Module ....................................................................... Serial Peripheral Interface (SPI) Module ............................................................................... GPIO MUX ................................................................................................................. Development Support 5.1 5.2 5.3 6 SPRS174T – APRIL 2001 – REVISED MAY 2012 ........................................................................................................ 86 Device and Development Support Tool Nomenclature ............................................................... 86 Documentation Support .................................................................................................. 87 Community Resources .................................................................................................... 89 Electrical Specifications 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 55 58 61 61 61 61 61 62 62 62 62 63 68 73 77 80 83 ..................................................................................................... 91 Absolute Maximum Ratings .............................................................................................. 91 Recommended Operating Conditions .................................................................................. 91 Electrical Characteristics Over Recommended Operating Conditions (Unless Otherwise Noted) ............. 92 Current Consumption ..................................................................................................... 93 Current Consumption Graphs ............................................................................................ 95 Reducing Current Consumption ......................................................................................... 97 Emulator Connection Without Signal Buffering for the DSP ......................................................... 97 Power Sequencing Requirements ....................................................................................... 98 Signal Transition Levels ................................................................................................. 100 Timing Parameter Symbology .......................................................................................... 101 General Notes on Timing Parameters ................................................................................ 101 Test Load Circuit ......................................................................................................... 101 Device Clock Table ...................................................................................................... 102 Clock Requirements and Characteristics ............................................................................. 103 6.14.1 Input Clock Requirements ................................................................................... 103 6.14.2 Output Clock Characteristics ................................................................................ 104 Reset Timing ............................................................................................................. 104 Low-Power Mode Wakeup Timing ..................................................................................... 108 Event Manager Interface ................................................................................................ 112 6.17.1 PWM Timing ................................................................................................... 112 6.17.2 Interrupt Timing ................................................................................................ 114 General-Purpose Input/Output (GPIO) – Output Timing ............................................................ 115 General-Purpose Input/Output (GPIO) – Input Timing .............................................................. 116 Serial Peripheral Interface (SPI) Master Mode Timing .............................................................. 117 Serial Peripheral Interface (SPI) Slave Mode Timing ............................................................... 122 External Interface (XINTF) Timing ..................................................................................... 126 XINTF Signal Alignment to XCLKOUT ................................................................................ 130 External Interface Read Timing ........................................................................................ 131 External Interface Write Timing ........................................................................................ 133 External Interface Ready-on-Read Timing With One External Wait State ....................................... 134 External Interface Ready-on-Write Timing With One External Wait State ....................................... 137 Copyright © 2001–2012, Texas Instruments Incorporated Contents 3 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 6.28 6.29 6.30 6.31 6.32 6.33 6.34 www.ti.com XHOLD and XHOLDA ................................................................................................... XHOLD/XHOLDA Timing ............................................................................................... On-Chip Analog-to-Digital Converter .................................................................................. 6.30.1 ADC Absolute Maximum Ratings ........................................................................... 6.30.2 ADC Electrical Characteristics Over Recommended Operating Conditions ........................... 6.30.3 Current Consumption for Different ADC Configurations ................................................. 6.30.4 ADC Power-Up Control Bit Timing .......................................................................... 6.30.5 Detailed Description .......................................................................................... 6.30.5.1 Reference Voltage ................................................................................ 6.30.5.2 Analog Inputs ..................................................................................... 6.30.5.3 Converter .......................................................................................... 6.30.5.4 Conversion Modes ............................................................................... 6.30.6 Sequential Sampling Mode (Single-Channel) (SMODE = 0) ............................................ 6.30.7 Simultaneous Sampling Mode (Dual-Channel) (SMODE = 1) .......................................... 6.30.8 Definitions of Specifications and Terminology ............................................................. Multichannel Buffered Serial Port (McBSP) Timing ................................................................. 6.31.1 McBSP Transmit and Receive Timing ...................................................................... 6.31.2 McBSP as SPI Master or Slave Timing .................................................................... Flash Timing (F281x Only) ............................................................................................. ROM Timing (C281x only) .............................................................................................. Migrating From F281x Devices to C281x Devices .................................................................. 7 8 Revision History Mechanical Data 4 Contents 140 141 143 143 144 145 146 146 146 146 146 146 147 148 149 150 150 153 157 159 160 .............................................................................................................. 161 .............................................................................................................. 162 Copyright © 2001–2012, Texas Instruments Incorporated TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 List of Figures 2-1 TMS320F2812 and TMS320C2812 179-Ball GHH/ZHH MicroStar BGA™ (Bottom View)............................. 14 2-2 TMS320F2812 and TMS320C2812 176-Pin PGF LQFP (Top View) 2-3 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 5-1 6-1 6-2 6-3 6-4 6-5 6-6 6-7 6-8 6-9 6-10 6-11 6-12 6-13 6-14 6-15 6-16 6-17 6-18 6-19 6-20 ..................................................... 15 TMS320F2810, TMS320F2811, TMS320C2810, and TMS320C2811 128-Pin PBK LQFP (Top View) .............. 16 Functional Block Diagram ....................................................................................................... 27 F2812/C2812 Memory Map ..................................................................................................... 28 F2811/C2811 Memory Map ..................................................................................................... 29 F2810/C2810 Memory Map ..................................................................................................... 29 External Interface Block Diagram .............................................................................................. 42 Interrupt Sources ................................................................................................................. 44 Multiplexing of Interrupts Using the PIE Block ............................................................................... 45 Clock and Reset Domains ...................................................................................................... 48 OSC and PLL Block .............................................................................................................. 50 Recommended Crystal/Clock Connection .................................................................................... 52 Watchdog Module ................................................................................................................ 53 CPU-Timers ....................................................................................................................... 55 CPU-Timer Interrupts Signals and Output Signal ............................................................................ 56 Event Manager A Functional Block Diagram ................................................................................. 61 Block Diagram of the F281x and C281x ADC Module ...................................................................... 64 ADC Pin Connections With Internal Reference .............................................................................. 65 ADC Pin Connections With External Reference ............................................................................. 66 eCAN Block Diagram and Interface Circuit ................................................................................... 69 eCAN Memory Map .............................................................................................................. 71 McBSP Module With FIFO ...................................................................................................... 74 Serial Communications Interface (SCI) Module Block Diagram............................................................ 79 Serial Peripheral Interface Module Block Diagram (Slave Mode).......................................................... 82 GPIO/Peripheral Pin Multiplexing .............................................................................................. 85 TMS320x281x Device Nomenclature .......................................................................................... 87 F2812/F2811/F2810 Typical Current Consumption Over Frequency ..................................................... 95 F2812/F2811/F2810 Typical Power Consumption Over Frequency ....................................................... 96 C2812/C2811/C2810 Typical Current Consumption Over Frequency .................................................... 96 C2812/C2811/C2810 Typical Power Consumption Over Frequency ...................................................... 97 Emulator Connection Without Signal Buffering for the DSP ................................................................ 98 F2812/F2811/F2810 Typical Power-Up and Power-Down Sequence – Option 2 ....................................... 99 Output Levels.................................................................................................................... 100 Input Levels ...................................................................................................................... 100 3.3-V Test Load Circuit......................................................................................................... 101 Clock Timing ..................................................................................................................... 104 Power-on Reset in Microcomputer Mode (XMP/MC = 0) (See Note D) ................................................. 106 Power-on Reset in Microprocessor Mode (XMP/MC = 1) ................................................................. 107 Warm Reset in Microcomputer Mode ........................................................................................ 107 Effect of Writing Into PLLCR Register ....................................................................................... 107 IDLE Entry and Exit Timing .................................................................................................... 108 STANDBY Entry and Exit Timing ............................................................................................. 110 HALT Wakeup Using XNMI ................................................................................................... 111 PWM Output Timing ............................................................................................................ 112 TDIRx Timing .................................................................................................................... 113 EVASOC Timing ................................................................................................................ 113 Copyright © 2001–2012, Texas Instruments Incorporated List of Figures 5 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com 6-21 EVBSOC Timing ................................................................................................................ 113 6-22 External Interrupt Timing ....................................................................................................... 114 6-23 General-Purpose Output Timing .............................................................................................. 115 6-24 GPIO Input Qualifier – Example Diagram for QUALPRD = 1 ............................................................. 116 6-25 General-Purpose Input Timing ................................................................................................ 117 6-26 SPI Master Mode External Timing (Clock Phase = 0) ..................................................................... 119 6-27 SPI Master External Timing (Clock Phase = 1) ............................................................................. 121 6-28 SPI Slave Mode External Timing (Clock Phase = 0) ....................................................................... 123 6-29 SPI Slave Mode External Timing (Clock Phase = 1) ....................................................................... 125 6-30 Relationship Between XTIMCLK and SYSCLKOUT ....................................................................... 129 6-31 Example Read Access ......................................................................................................... 132 6-32 Example Write Access ......................................................................................................... 133 6-33 Example Read With Synchronous XREADY Access 6-34 Example Read With Asynchronous XREADY Access ..................................................................... 136 6-35 Write With Synchronous XREADY Access .................................................................................. 138 6-36 Write With Asynchronous XREADY Access 6-37 External Interface Hold Waveform ............................................................................................ 141 6-38 XHOLD/XHOLDA Timing Requirements (XCLKOUT = 1/2 XTIMCLK) .................................................. 142 6-39 ADC Analog Input Impedance Model ........................................................................................ 146 6-40 ADC Power-Up Control Bit Timing 6-41 Sequential Sampling Mode (Single-Channel) Timing ...................................................................... 147 6-42 Simultaneous Sampling Mode Timing 6-43 6-44 6-45 6-46 6-47 6-48 6 ...................................................................... ................................................................................ ........................................................................................... ....................................................................................... McBSP Receive Timing ........................................................................................................ McBSP Transmit Timing ....................................................................................................... McBSP Timing as SPI Master or Slave: CLKSTP = 10b, CLKXP = 0 ................................................... McBSP Timing as SPI Master or Slave: CLKSTP = 11b, CLKXP = 0 ................................................... McBSP Timing as SPI Master or Slave: CLKSTP = 10b, CLKXP = 1 ................................................... McBSP Timing as SPI Master or Slave: CLKSTP = 11b, CLKXP = 1 ................................................... List of Figures 135 139 146 148 152 152 153 154 155 156 Copyright © 2001–2012, Texas Instruments Incorporated TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 List of Tables 2-1 Hardware Features ............................................................................................................... 13 2-2 Signal Descriptions ............................................................................................................... 17 3-1 Addresses of Flash Sectors in F2812 and F2811 3-2 Addresses of Flash Sectors in F2810 ......................................................................................... 30 3-3 Wait States ........................................................................................................................ 31 3-4 Boot Mode Selection ............................................................................................................. 34 3-5 Impact of Using the Code Security Module ................................................................................... 35 3-6 Peripheral Frame 0 Registers 39 3-7 Peripheral Frame 1 Registers 39 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 3-17 3-18 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 5-1 ........................................................................... .................................................................................................. .................................................................................................. Peripheral Frame 2 Registers .................................................................................................. Device Emulation Registers..................................................................................................... XINTF Configuration and Control Register Mappings ....................................................................... XREVISION Register Bit Definitions ........................................................................................... PIE Peripheral Interrupts ........................................................................................................ PIE Configuration and Control Registers...................................................................................... External Interrupts Registers ................................................................................................... PLL, Clocking, Watchdog, and Low-Power Mode Registers ............................................................... PLLCR Register Bit Definitions ................................................................................................. Possible PLL Configuration Modes ............................................................................................ F281x and C281x Low-Power Modes ......................................................................................... CPU-Timers 0, 1, 2 Configuration and Control Registers ................................................................... Module and Signal Names for EVA and EVB ................................................................................ EVA Registers .................................................................................................................... ADC Registers .................................................................................................................... 3.3-V eCAN Transceivers for the TMS320F281x and TMS320C281x DSPs ............................................ CAN Registers .................................................................................................................... McBSP Registers ................................................................................................................. SCI-A Registers .................................................................................................................. SCI-B Registers .................................................................................................................. SPI Registers ..................................................................................................................... GPIO Mux Registers ............................................................................................................. GPIO Data Registers ............................................................................................................ TMS320x281x Peripheral Selection Guide ................................................................................... 30 40 41 43 43 45 46 47 49 51 52 54 57 58 59 67 70 72 75 78 78 81 83 84 87 6-1 TMS320F281x Current Consumption by Power-Supply Pins Over Recommended Operating Conditions During Low-Power Modes at 150-MHz SYSCLKOUT ............................................................................... 93 6-2 TMS320C281x Current Consumption by Power-Supply Pins Over Recommended Operating Conditions During Low-Power Modes at 150-MHz SYSCLKOUT ............................................................................... 94 6-3 Typical Current Consumption by Various Peripherals (at 150 MHz) ...................................................... 97 6-4 Recommended “Low-Dropout Regulators” .................................................................................... 98 6-5 TMS320F281x and TMS320C281x Clock Table and Nomenclature 6-6 Input Clock Frequency ......................................................................................................... 103 6-7 XCLKIN Timing Requirements – PLL Bypassed or Enabled 6-8 XCLKIN Timing Requirements – PLL Disabled 6-9 6-10 6-11 6-12 .................................................... ............................................................. ............................................................................ Possible PLL Configuration Modes ........................................................................................... XCLKOUT Switching Characteristics (PLL Bypassed or Enabled) ...................................................... Reset (XRS) Timing Requirements .......................................................................................... IDLE Mode Timing Requirements ........................................................................................... Copyright © 2001–2012, Texas Instruments Incorporated List of Tables 102 103 103 103 104 104 108 7 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 6-13 6-14 6-15 6-16 6-17 6-18 6-19 6-20 6-21 6-22 6-23 6-24 6-25 6-26 6-27 6-28 6-29 6-30 6-31 6-32 6-33 6-34 6-35 6-36 6-37 6-38 6-39 6-40 6-41 6-42 6-43 6-44 6-45 6-46 6-47 6-48 6-49 6-50 6-51 6-52 6-53 6-54 6-55 6-56 6-57 6-58 6-59 6-60 8 www.ti.com ....................................................................................... ..................................................................................... STANDBY Mode Switching Characteristics ................................................................................ HALT Mode Timing Requirements ........................................................................................... HALT Mode Switching Characteristics ...................................................................................... PWM Switching Characteristics .............................................................................................. Timer and Capture Unit Timing Requirements ............................................................................. External ADC Start-of-Conversion – EVA – Switching Characteristics ................................................. External ADC Start-of-Conversion – EVB – Switching Characteristics ................................................. Interrupt Switching Characteristics .......................................................................................... Interrupt Timing Requirements ............................................................................................... General-Purpose Output Switching Characteristics ....................................................................... General-Purpose Input Timing Requirements .............................................................................. SPI Master Mode External Timing (Clock Phase = 0) .................................................................... SPI Master Mode External Timing (Clock Phase = 1) .................................................................... SPI Slave Mode External Timing (Clock Phase = 0) ...................................................................... SPI Slave Mode External Timing (Clock Phase = 1) ...................................................................... Relationship Between Parameters Configured in XTIMING and Duration of Pulse ................................... XINTF Clock Configurations ................................................................................................... External Memory Interface Read Switching Characteristics ............................................................. External Memory Interface Read Timing Requirements .................................................................. External Memory Interface Write Switching Characteristics .............................................................. External Memory Interface Read Switching Characteristics (Ready-on-Read, 1 Wait State) ....................... External Memory Interface Read Timing Requirements (Ready-on-Read, 1 Wait State) ............................ Synchronous XREADY Timing Requirements (Ready-on-Read, 1 Wait State) ....................................... Asynchronous XREADY Timing Requirements (Ready-on-Read, 1 Wait State) ...................................... External Memory Interface Write Switching Characteristics (Ready-on-Write, 1 Wait State) ........................ Synchronous XREADY Timing Requirements (Ready-on-Write, 1 Wait State) ....................................... Asynchronous XREADY Timing Requirements (Ready-on-Write, 1 Wait State) ...................................... XHOLD/XHOLDA Timing Requirements (XCLKOUT = XTIMCLK) ...................................................... XHOLD/XHOLDA Timing Requirements (XCLKOUT = 1/2 XTIMCLK) ................................................. DC Specifications .............................................................................................................. AC Specifications ............................................................................................................... Current Consumption for Different ADC Configurations (at 25-MHz ADCCLK) ........................................ ADC Power-Up Delays ......................................................................................................... Sequential Sampling Mode Timing ........................................................................................... Simultaneous Sampling Mode Timing ....................................................................................... McBSP Timing Requirements ................................................................................................ McBSP Switching Characteristics ........................................................................................... McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 10b, CLKXP = 0) ............................... McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 10b, CLKXP = 0) ........................... McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 0) ............................... McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 0) ........................... McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 10b, CLKXP = 1) ............................... McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 10b, CLKXP = 1) ........................... McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 1) ............................... McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 1) ........................... Flash Endurance for A and S Temperature Material ....................................................................... IDLE Mode Switching Characteristics 108 STANDBY Mode Timing Requirements 109 List of Tables 109 111 111 112 112 113 113 114 114 115 117 118 120 122 124 126 129 131 131 133 134 134 134 134 137 137 137 141 142 144 145 145 146 147 148 150 151 153 153 154 154 155 155 156 156 157 Copyright © 2001–2012, Texas Instruments Incorporated TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 6-61 Flash Endurance for Q Temperature Material .............................................................................. 157 6-62 Flash Parameters at 150-MHz SYSCLKOUT ............................................................................... 157 6-63 Flash/OTP Access Timing ..................................................................................................... 158 6-64 Minimum Required Flash Wait States at Different Frequencies (F281x devices) ...................................... 158 6-65 ROM Access Timing............................................................................................................ 159 6-66 Minimum Required ROM Wait States at Different Frequencies (C281x devices) ...................................... 159 8-1 Thermal Resistance Characteristics for 179-Ball GHH .................................................................... 162 8-2 Thermal Resistance Characteristics for 179-Ball ZHH..................................................................... 162 8-3 Thermal Resistance Characteristics for 176-Pin PGF ..................................................................... 162 8-4 Thermal Resistance Characteristics for 128-Pin PBK Copyright © 2001–2012, Texas Instruments Incorporated ..................................................................... List of Tables 162 9 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Digital Signal Processors Check for Samples: TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810, TMS320C2811, TMS320C2812 1 TMS320F281x, TMS320C281x DSPs 1.1 Features 1234 • High-Performance Static CMOS Technology – 150 MHz (6.67-ns Cycle Time) – Low-Power (1.8-V Core at 135 MHz, 1.9-V Core at 150 MHz, 3.3-V I/O) Design • JTAG Boundary Scan Support (1) • High-Performance 32-Bit CPU ( TMS320C28x™) – 16 x 16 and 32 x 32 MAC Operations – 16 x 16 Dual MAC – Harvard Bus Architecture – Atomic Operations – Fast Interrupt Response and Processing – Unified Memory Programming Model – 4M Linear Program/Data Address Reach – Code-Efficient (in C/C++ and Assembly) – TMS320F24x/LF240x Processor Source Code Compatible • On-Chip Memory – Flash Devices: Up to 128K x 16 Flash (Four 8K x 16 and Six 16K x 16 Sectors) – ROM Devices: Up to 128K x 16 ROM – 1K x 16 OTP ROM – L0 and L1: 2 Blocks of 4K x 16 Each SingleAccess RAM (SARAM) – H0: 1 Block of 8K x 16 SARAM – M0 and M1: 2 Blocks of 1K x 16 Each SARAM • Boot ROM (4K x 16) – With Software Boot Modes – Standard Math Tables • External Interface (2812) – Over 1M x 16 Total Memory – Programmable Wait States – Programmable Read/Write Strobe Timing – Three Individual Chip Selects • Endianness: Little Endian • Clock and System Control – Dynamic PLL Ratio Changes Supported – On-Chip Oscillator – Watchdog Timer Module • Three External Interrupts • Peripheral Interrupt Expansion (PIE) Block That Supports 45 Peripheral Interrupts • Three 32-Bit CPU-Timers • 128-Bit Security Key/Lock – Protects Flash/ROM/OTP and L0/L1 SARAM – Prevents Firmware Reverse-Engineering • Motor Control Peripherals – Two Event Managers (EVA, EVB) – Compatible to 240xA Devices • Serial Port Peripherals – Serial Peripheral Interface (SPI) – Two Serial Communications Interfaces (SCIs), Standard UART – Enhanced Controller Area Network (eCAN) – Multichannel Buffered Serial Port (McBSP) • 12-Bit ADC, 16 Channels – 2 x 8 Channel Input Multiplexer – Two Sample-and-Hold – Single/Simultaneous Conversions – Fast Conversion Rate: 80 ns/12.5 MSPS • Up to 56 General-Purpose I/O (GPIO) Pins • Advanced Emulation Features – Analysis and Breakpoint Functions – Real-Time Debug via Hardware • Development Tools Include – ANSI C/C++ Compiler/Assembler/Linker – Code Composer Studio™ IDE – DSP/BIOS™ – JTAG Scan Controllers(1) • Low-Power Modes and Power Savings – IDLE, STANDBY, HALT Modes Supported – Disable Individual Peripheral Clocks (1) IEEE Standard 1149.1-1990 IEEE Standard Test Access Port and Boundary-Scan Architecture Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. MicroStar BGA, TMS320C28x, Code Composer Studio, DSP/BIOS, C28x, TMS320C2000, TI, TMS320C54x, TMS320C55x, TMS320 are trademarks of Texas Instruments. eZdsp is a trademark of Spectrum Digital Incorporated. All other trademarks are the property of their respective owners. 1 2 3 4 Copyright © 2001–2012, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com • Package Options – 179-Ball MicroStar BGA™ With External Memory Interface (GHH, ZHH) (2812) – 176-Pin Low-Profile Quad Flatpack (LQFP) With External Memory Interface (PGF) (2812) – 128-Pin LQFP Without External Memory Interface (PBK) (2810, 2811) 1.2 SPRS174T – APRIL 2001 – REVISED MAY 2012 • Temperature Options – A: –40°C to 85°C (GHH, ZHH, PGF, PBK) – S: –40°C to 125°C (GHH, ZHH, PGF, PBK) – Q: –40°C to 125°C (PGF, PBK) [Q100 Qualification] Getting Started This section gives a brief overview of the steps to take when first developing for a C28x™ device. For more detail on each of these steps, see the following: • Getting Started With TMS320C28x Digital Signal Controllers (literature number SPRAAM0) • C2000 Getting Started Website (http://www.ti.com/c2000getstarted) • TMS320F28x DSC Development and Experimenter’s Kits (http://www.ti.com/f28xkits) TMS320F281x, TMS320C281x DSPs Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 11 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 2 www.ti.com Introduction This section provides a summary of each device’s features, lists the pin assignments, and describes the function of each pin. This document also provides detailed descriptions of peripherals, electrical specifications, parameter measurement information, and mechanical data about the available packaging. 2.1 Description The TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810, TMS320C2811, and TMS320C2812 devices, members of the TMS320C28x™ DSP generation, are highly integrated, high-performance solutions for demanding control applications. The functional blocks and the memory maps are described in Section 3, Functional Overview. Throughout this document, TMS320F2810, TMS320F2811, and TMS320F2812 are abbreviated as F2810, F2811, and F2812, respectively. F281x denotes all three Flash devices. TMS320C2810, TMS320C2811, and TMS320C2812 are abbreviated as C2810, C2811, and C2812, respectively. C281x denotes all three ROM devices. 2810 denotes both F2810 and C2810 devices; 2811 denotes both F2811 and C2811 devices; and 2812 denotes both F2812 and C2812 devices. 12 Introduction Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 2.2 SPRS174T – APRIL 2001 – REVISED MAY 2012 Device Summary Table 2-1 provides a summary of each device’s features. Table 2-1. Hardware Features (1) TYPE (2) F2810 F2811 F2812 C2810 C2811 C2812 Instruction Cycle (at 150 MHz) – 6.67 ns 6.67 ns 6.67 ns 6.67 ns 6.67 ns 6.67 ns Single-Access RAM (SARAM) (16-bit word) – 18K 18K 18K 18K 18K 18K 3.3-V On-Chip Flash (16-bit word) – 64K 128K 128K – – – On-Chip ROM (16-bit word) – – – – 64K 128K 128K Code Security for On-Chip Flash/SARAM/OTP/ROM – Yes Yes Yes Yes Yes Yes Boot ROM – Yes Yes Yes Yes Yes Yes OTP ROM (1K x 16) – Yes Yes Yes Yes (3) Yes (3) Yes (3) External Memory Interface 0 – – Yes – – Yes Event Managers A and B (EVA and EVB) – EVA, EVB EVA, EVB EVA, EVB EVA, EVB EVA, EVB EVA, EVB ● General-Purpose (GP) Timers – 4 4 4 4 4 4 ● Compare (CMP)/PWM 0 16 16 16 16 16 16 ● Capture (CAP)/QEP Channels 0 6/2 6/2 6/2 6/2 6/2 6/2 – Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 16 FEATURE Watchdog Timer 12-Bit ADC ● 0 16 16 16 16 16 32-Bit CPU Timers Channels – 3 3 3 3 3 3 Serial Peripheral Interface (SPI) 0 Yes Yes Yes Yes Yes Yes Serial Communications Interfaces A and B (SCIA and SCIB) 0 SCIA, SCIB SCIA, SCIB SCIA, SCIB SCIA, SCIB SCIA, SCIB SCIA, SCIB Controller Area Network (CAN) 0 Yes Yes Yes Yes Yes Yes Multichannel Buffered Serial Port (McBSP) 0 Yes Yes Yes Yes Yes Yes Digital I/O Pins (Shared) – 56 56 56 56 56 56 External Interrupts – 3 3 3 3 3 3 Supply Voltage – 128-pin PBK Packaging 176-pin PGF 179-ball GHH – 179-ball ZHH Temperature Options (2) (3) (4) Yes Yes – Yes Yes – – – Yes – – Yes – – Yes – – Yes – – Yes – – Yes A: –40°C to 85°C – Yes Yes Yes Yes Yes Yes S: –40°C to 125°C – Yes Yes Yes Yes Yes Yes Q: –40°C to 125°C (Q100 Qualification) – Yes Yes PGF only Yes Yes PGF only – TMS TMS TMS TMS TMS TMS Product Status (4) (1) 1.8-V Core (135 MHz), 1.9-V Core (150 MHz), 3.3-V I/O The TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810, TMS320C2811, TMS320C2812 DSP Silicon Errata (literature number SPRZ193) has been posted on the Texas Instruments (TI) website. It will be updated as needed. A type change represents a major functional feature difference in a peripheral module. Within a peripheral type, there may be minor differences between devices that do not affect the basic functionality of the module. These device-specific differences are listed in the TMS320x28xx, 28xxx DSP Peripheral Reference Guide (literature number SPRU566) and in the peripheral reference guides. On C281x devices, OTP is replaced by a 1K x 16 block of ROM. See Section 5.1, Device and Development Support Tool Nomenclature, for descriptions of device stages. Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 13 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 2.3 www.ti.com Pin Assignments Figure 2-1 illustrates the ball locations for the 179-ball GHH and ZHH ball grid array (BGA) packages. Figure 2-2 shows the pin assignments for the 176-pin PGF low-profile quad flatpack (LQFP) and Figure 23 shows the pin assignments for the 128-pin PBK LQFP. Table 2-2 describes the function(s) of each pin. 2.3.1 Terminal Assignments for the GHH/ZHH Packages See Table 2-2 for a description of each terminal’s function(s). P XZCS0AND1 PWM8 PWM10 VSS VDD CAP6_ QEPI2 XD[8] VSS VDD T3CTRIP_ T4CTRIP/ PDPINTB EVBSOC N SPISOMIA PWM7 PWM9 XR/W T4PWM_ T4CMP C4TRIP TEST2 VDD3VFL XD[11] XA[2] XWE M SPISIMOA XA[1] XRD PWM12 CAP4_ QEP3 CAP5_ QEP4 TEST1 XD[9] X2 VSS XA[3] L VDD VSS XD[6] PWM11 XD[7] C5TRIP VDDIO TDIRB XD[10] VDDIO K VSS SPICLKA XD[4] SPISTEA T3PWM_ T3CMP VSS C6TRIP TCLKINB X1/ XCLKIN J MCLKXA MFSRA XD[3] VDDIO H VDD MCLKRA XD[1] G MDXA MDRA F XMP/MC ADCRESEXT E AVDDREFBG SCITXDB VDDIO PWM1 SCIRXDB PWM2 VSS PWM3 PWM4 XD[12] XHOLDA PWM5 VDD VSS PWM6 XD[5] XD[13] T1PWM_ T1CMP XA[4] T2PWM_ T2CMP VSS MFSXA XD[2] CAP1_ QEP1 CAP2_ QEP2 CAP3_ QEPI1 XA[5] T1CTRIP_ PDPINTA XD[0] VSS XA[0] T2CTRIP/ EVASOC VDDIO VDD VSS XA[6] VSSA1 VDDA1 ADCINB7 C3TRIP XCLKOUT XA[7] TCLKINA TDIRA ADCADCAVSSREFBG REFP REFM ADCINA5 XA[8] C1TRIP VSS EMU0 TDO TMS XA[9] VSS1 SCITXDA VDD EMU1 VSS XA[12] XA[10] TDI VDD ADCINA3 ADCINA7 XREADY XA[17] VSS XA[15] VDD XD[14] TRST XZCS6AND7 VDDA2 VDD1 SCIRXDA XA[16] XD[15] XA[14] XF_ XPLLDIS TCK TESTSEL XA[11] 5 6 7 8 9 10 11 12 13 14 ADCINA0 ADCINA4 3 C2TRIP VSS ADCINB2 2 XA[13] XINT1_ XBIO B VSSAIO VDDIO XINT2_ ADCSOC ADCINB3 ADCINB0 ADCINB1 ADCINA2 ADCLO XNMI_ XINT13 XA[18] C VDDAIO ADCBGREFIN XHOLD XRS ADCINB6 ADCINB5 ADCINB4 ADCINA1 ADCINA6 1 XZCS2 CANTXA CANRXA D A VDD 4 VSSA2 VSS Figure 2-1. TMS320F2812 and TMS320C2812 179-Ball GHH/ZHH MicroStar BGA™ (Bottom View) 14 Introduction Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 2.3.2 SPRS174T – APRIL 2001 – REVISED MAY 2012 Pin Assignments for the PGF Package XA[11] TDI XA[10] VSS VDD TDO TMS XA[9] C3TRIP C2TRIP C1TRIP XA[8] VSS XCLKOUT XA[7] TCLKINA TDIR T2CTRIP/EVASOC VDDIO VSS VDD XA[6] T1CTRIP_PDPINTA CAP3_QEPI1 XA[5] CAP2_QEP2 CAP1_QEP1 VSS T2PWM_T2CMP XA[4] T1PWM_T1CMP PWM6 VDD VSS PWM5 XD[13] XD[12] PWM4 PWM3 PWM2 PWM1 SCIRXDB SCITXDB CANRXA The TMS320F2812 and TMS320C2812 176-pin PGF low-profile quad flatpack (LQFP) pin assignments are shown in Figure 2-2. See Table 2-2 for a description of each pin’s function(s). 132 89 88 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 133 XZCS6AND7 TESTSEL TRST TCK EMU0 XA[12] XD[14] XF_XPLLDIS XA[13] VSS VDD XA[14] VDDIO EMU1 XD[15] XA[15] XINT1_XBIO XNMI_XINT13 XINT2_ADCSOC XA[16] VSS VDD SCITXDA XA[17] SCIRXDA XA[18] XHOLD XRS XREADY VDD1 VSS1 ADCBGREFIN VSSA2 VDDA2 ADCINA7 ADCINA6 ADCINA5 ADCINA4 ADCINA3 ADCINA2 ADCINA1 ADCINA0 ADCLO VSSAIO 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 176 XZCS2 CANTXA VSS XA[3] XWE T4CTRIP/EVBSOC XHOLDA VDDIO XA[2] T3CTRIP_PDPINTB VSS X1/XCLKIN X2 VDD XD[11] XD[10] TCLKINB TDIRB VSS VDD3VFL XD[9] TEST1 TEST2 XD[8] VDDIO C6TRIP C5TRIP C4TRIP CAP6_QEPI2 CAP5_QEP4 VSS CAP4_QEP3 VDD T4PWM_T4CMP XD[7] T3PWM_T3CMP VSS XR/W PWM12 PWM11 PWM10 PWM9 PWM8 PWM7 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 44 VDDAIO ADCINB0 ADCINB1 ADCINB2 ADCINB3 ADCINB4 ADCINB5 ADCINB6 ADCINB7 ADCREFM ADCREFP AVSSREFBG AVDDREFBG VDDA1 VSSA1 ADCRESEXT XMP/MC XA[0] VSS MDRA XD[0] MDXA VDD XD[1] MCLKRA MFSXA XD[2] MCLKXA MFSRA XD[3] VDDIO VSS XD[4] SPICLKA SPISTEA XD[5] VDD VSS XD[6] SPISIMOA SPISOMIA XRD XA[1] XZCS0AND1 1 45 Figure 2-2. TMS320F2812 and TMS320C2812 176-Pin PGF LQFP (Top View) Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 15 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 2.3.3 www.ti.com Pin Assignments for the PBK Package TDI VSS VDD TDO TMS C3TRIP C2TRIP C1TRIP VSS XCLKOUT TCLKINA TDIRA T2CTRIP/EVASOC VDDIO VDD T1CTRIP_PDPINTA CAP3_QEPI1 CAP2_QEP2 CAP1_QEP1 T2PWM_T2CMP T1PWM_T1CMP PWM6 VDD VSS PWM5 PWM4 PWM3 PWM2 PWM1 SCIRXDB SCITXDB CANRXA The TMS320F2810, TMS320F2811, TMS320C2810, and TMS320C2811 128-pin PBK low-profile quad flatpack (LQFP) pin assignments are shown in Figure 2-3. See Table 2-2 for a description of each pin’s function(s). 96 65 64 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 97 TESTSEL TRST TCK EMU0 XF_XPLLDIS VDD VSS VDDIO EMU1 XINT1_XBIO XNMI_XINT13 XINT2_ADCSOC VSS VDD SCITXDA SCIRXDA XRS VDD1 VSS1 ADCBGREFIN VSSA2 VDDA2 ADCINA7 ADCINA6 ADCINA5 ADCINA4 ADCINA3 ADCINA2 ADCINA1 ADCINA0 ADCLO VSSAIO 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 128 CANTXA VDD VSS T4CTRIP/EVBSOC T3CTRIP_PDPINTB VSS X1/XCLKIN X2 VDD TCLKINB TDIRB VSS VDD3VFL TEST1 TEST2 VDDIO C6TRIP C5TRIP C4TRIP CAP6_QEPI2 CAP5_QEP4 CAP4_QEP3 VDD T4PWM_T4CMP T3PWM_T3CMP VSS PWM12 PWM11 PWM10 PWM9 PWM8 PWM7 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 VDDAIO ADCINB0 ADCINB1 ADCINB2 ADCINB3 ADCINB4 ADCINB5 ADCINB6 ADCINB7 ADCREFM ADCREFP AVSSREFBG AVDDREFBG VDDA1 VSSA1 ADCRESEXT VSS MDRA MDXA VDD MCLKRA MFSXA MCLKXA MFSRA VDDIO VSS SPICLKA SPISTEA VDD VSS SPISIMOA SPISOMIA 1 Figure 2-3. TMS320F2810, TMS320F2811, TMS320C2810, and TMS320C2811 128-Pin PBK LQFP (Top View) 16 Introduction Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 2.4 SPRS174T – APRIL 2001 – REVISED MAY 2012 Signal Descriptions Table 2-2 specifies the signals on the F281x and C281x devices. All digital inputs are TTL-compatible. All outputs are 3.3 V with CMOS levels. Inputs are not 5-V tolerant. A 100-µA (or 20-µA) pullup/pulldown is used. Table 2-2. Signal Descriptions (1) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION XINTF SIGNALS (2812 ONLY) XA[18] D7 158 – O/Z – XA[17] B7 156 – O/Z – XA[16] A8 152 – O/Z – XA[15] B9 148 – O/Z – XA[14] A10 144 – O/Z – XA[13] E10 141 – O/Z – XA[12] C11 138 – O/Z – XA[11] A14 132 – O/Z – XA[10] C12 130 – O/Z – XA[9] D14 125 – O/Z – XA[8] E12 121 – O/Z – XA[7] F12 118 – O/Z – XA[6] G14 111 – O/Z – XA[5] H13 108 – O/Z – XA[4] J12 103 – O/Z – XA[3] M11 85 – O/Z – XA[2] N10 80 – O/Z – XA[1] M2 43 – O/Z – XA[0] G5 18 – O/Z – XD[15] A9 147 – I/O/Z PU XD[14] B11 139 – I/O/Z PU XD[13] J10 97 – I/O/Z PU XD[12] L14 96 – I/O/Z PU XD[11] N9 74 – I/O/Z PU XD[10] L9 73 – I/O/Z PU XD[9] M8 68 – I/O/Z PU XD[8] P7 65 – I/O/Z PU XD[7] L5 54 – I/O/Z PU XD[6] L3 39 – I/O/Z PU XD[5] J5 36 – I/O/Z PU XD[4] K3 33 – I/O/Z PU XD[3] J3 30 – I/O/Z PU XD[2] H5 27 – I/O/Z PU XD[1] H3 24 – I/O/Z PU XD[0] G3 21 – I/O/Z PU (1) (2) (3) 19-bit XINTF Address Bus 16-bit XINTF Data Bus Typical drive strength of the output buffer for all pins is 4 mA except for TDO, XCLKOUT, XF, XINTF, EMU0, and EMU1 pins, which are 8 mA. I = Input, O = Output, Z = High impedance PU = pin has internal pullup; PD = pin has internal pulldown. Pullup/pulldown strength is given in Section 6.3, Electrical Characteristics Over Recommended Operating Conditions. The pullups/pulldowns are enabled in boundary scan mode. Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 17 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME XMP/MC 179-BALL GHH/ZHH F1 XHOLD E7 176-PIN PGF 17 159 128-PIN PBK – – I/O/Z (2) I I PU/PD (3) DESCRIPTION PD Microprocessor/Microcomputer Mode Select. Switches between microprocessor and microcomputer mode. When high, Zone 7 is enabled on the external interface. When low, Zone 7 is disabled from the external interface, and on-chip boot ROM may be accessed instead. This signal is latched into the XINTCNF2 register on a reset and the user can modify this bit in software. The state of the XMP/MC pin is ignored after reset. PU External Hold Request. XHOLD, when active (low), requests the XINTF to release the external bus and place all buses and strobes into a high-impedance state. The XINTF will release the bus when any current access is complete and there are no pending accesses on the XINTF. XHOLDA K10 82 – O/Z – External Hold Acknowledge. XHOLDA is driven active (low) when the XINTF has granted a XHOLD request. All XINTF buses and strobe signals will be in a high-impedance state. XHOLDA is released when the XHOLD signal is released. External devices should only drive the external bus when XHOLDA is active (low). XZCS0AND1 P1 44 – O/Z – XINTF Zone 0 and Zone 1 Chip Select. XZCS0AND1 is active (low) when an access to the XINTF Zone 0 or Zone 1 is performed. XZCS2 P13 88 – O/Z – XINTF Zone 2 Chip Select. XZCS2 is active (low) when an access to the XINTF Zone 2 is performed. XZCS6AND7 B13 133 – O/Z – XINTF Zone 6 and Zone 7 Chip Select. XZCS6AND7 is active (low) when an access to the XINTF Zone 6 or Zone 7 is performed. XWE N11 84 – O/Z – Write Enable. Active-low write strobe. The write strobe waveform is specified, per zone basis, by the Lead, Active, and Trail periods in the XTIMINGx registers. – Read Enable. Active-low read strobe. The read strobe waveform is specified, per zone basis, by the Lead, Active, and Trail periods in the XTIMINGx registers. NOTE: The XRD and XWE signals are mutually exclusive. – Read Not Write Strobe. Normally held high. When low, XR/W indicates write cycle is active; when high, XR/W indicates read cycle is active. PU Ready Signal. Indicates peripheral is ready to complete the access when asserted to 1. XREADY can be configured to be a synchronous or an asynchronous input. See the timing diagrams for more details. XRD M3 XR/W N4 XREADY 18 B6 Introduction 42 51 161 – – – O/Z O/Z I Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION JTAG AND MISCELLANEOUS SIGNALS X1/XCLKIN K9 77 58 I – Oscillator Input – input to the internal oscillator. This pin is also used to feed an external clock. The 28x can be operated with an external clock source, provided that the proper voltage levels be driven on the X1/XCLKIN pin. It should be noted that the X1/XCLKIN pin is referenced to the 1.8-V (or 1.9-V) core digital power supply (VDD), rather than the 3.3-V I/O supply (VDDIO). A clamping diode may be used to clamp a buffered clock signal to ensure that the logic-high level does not exceed VDD (1.8 V or 1.9 V) or a 1.8-V oscillator may be used. X2 M9 76 57 O – Oscillator Output XCLKOUT F11 119 87 O – Output clock derived from SYSCLKOUT to be used for external wait-state generation and as a general-purpose clock source. XCLKOUT is either the same frequency, 1/2 the frequency, or 1/4 the frequency of SYSCLKOUT. At reset, XCLKOUT = SYSCLKOUT/4. The XCLKOUT signal can be turned off by setting bit 3 (CLKOFF) of the XINTCNF2 register to 1. Unlike other GPIO pins, the XCLKOUT pin is not placed in a high-impedance state during reset. TESTSEL A13 134 97 I PD Test Pin. Reserved for TI. Must be connected to ground. Device Reset (in) and Watchdog Reset (out). XRS D6 160 113 I/O PU Device reset. XRS causes the device to terminate execution. The PC will point to the address contained at the location 0x3FFFC0. When XRS is brought to a high level, execution begins at the location pointed to by the PC. This pin is driven low by the DSP when a watchdog reset occurs. During watchdog reset, the XRS pin will be driven low for the watchdog reset duration of 512 XCLKIN cycles. The output buffer of this pin is an open-drain with an internal pullup (100 µA, typical). It is recommended that this pin be driven by an open-drain device. TEST1 TEST2 M7 N7 67 66 51 50 I/O I/O – Test Pin. Reserved for TI. On F281x devices, TEST1 must be left unconnected. On C281x devices, this pin is a “no connect (NC)” (that is, this pin is not connected to any circuitry internal to the device). – Test Pin. Reserved for TI. On F281x devices, TEST2 must be left unconnected. On C281x devices, this pin is a “no connect (NC)” (that is, this pin is not connected to any circuitry internal to the device). Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 19 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION JTAG JTAG test reset with internal pulldown. TRST, when driven high, gives the scan system control of the operations of the device. If this signal is not connected or driven low, the device operates in its functional mode, and the test reset signals are ignored. NOTE: Do not use pullup resistors on TRST; it has an internal pulldown device. TRST is an active-high test pin and must be maintained low at all times during normal device operation. In a low-noise environment, TRST may be left floating. In other instances, an external pulldown resistor is highly recommended. The value of this resistor should be based on drive strength of the debugger pods applicable to the design. A 2.2kΩ resistor generally offers adequate protection. Since this is application-specific, it is recommended that each target board be validated for proper operation of the debugger and the application. TRST B12 135 98 I PD TCK A12 136 99 I PU JTAG test clock with internal pullup TMS D13 126 92 I PU JTAG test-mode select (TMS) with internal pullup. This serial control input is clocked into the TAP controller on the rising edge of TCK. TDI C13 131 96 I PU JTAG test data input (TDI) with internal pullup. TDI is clocked into the selected register (instruction or data) on a rising edge of TCK. TDO D12 127 93 O/Z – JTAG scan out, test data output (TDO). The contents of the selected register (instruction or data) is shifted out of TDO on the falling edge of TCK. Emulator pin 0. When TRST is driven high, this pin is used as an interrupt to or from the emulator system and is defined as input/output through the JTAG scan. This pin is also used to put the device into boundary-scan mode. With the EMU0 pin at a logic-high state and the EMU1 pin at a logic-low state, a rising edge on the TRST pin would latch the device into boundary-scan mode. EMU0 D11 137 100 I/O/Z PU NOTE: An external pullup resistor is recommended on this pin. The value of this resistor should be based on the drive strength of the debugger pods applicable to the design. A 2.2-kΩ to 4.7-kΩ resistor is generally adequate. Since this is application-specific, it is recommended that each target board be validated for proper operation of the debugger and the application. 20 Introduction Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION Emulator pin 1. When TRST is driven high, this pin is used as an interrupt to or from the emulator system and is defined as input/output through the JTAG scan. This pin is also used to put the device into boundary-scan mode. With the EMU0 pin at a logic-high state and the EMU1 pin at a logic-low state, a rising edge on the TRST pin would latch the device into boundary-scan mode. EMU1 C9 146 105 I/O/Z PU NOTE: An external pullup resistor is recommended on this pin. The value of this resistor should be based on the drive strength of the debugger pods applicable to the design. A 2.2-kΩ to 4.7-kΩ resistor is generally adequate. Since this is application-specific, it is recommended that each target board be validated for proper operation of the debugger and the application. ADC ANALOG INPUT SIGNALS ADCINA7 B5 167 119 I – ADCINA6 D5 168 120 I – ADCINA5 E5 169 121 I – ADCINA4 A4 170 122 I – ADCINA3 B4 171 123 I – ADCINA2 C4 172 124 I – ADCINA1 D4 173 125 I – ADCINA0 A3 174 126 I – ADCINB7 F5 9 9 I – ADCINB6 D1 8 8 I – ADCINB5 D2 7 7 I – ADCINB4 D3 6 6 I – ADCINB3 C1 5 5 I – ADCINB2 B1 4 4 I – ADCINB1 C3 3 3 I – ADCINB0 C2 2 2 I – ADCREFP ADCREFM E2 E4 11 10 11 10 I/O I/O 8-channel analog inputs for Sample-and-Hold A. The ADC pins should not be driven before the VDDA1, VDDA2, and VDDAIO pins have been fully powered up. 8-channel analog inputs for Sample-and-Hold B. The ADC pins should not be driven before the VDDA1, VDDA2, and VDDAIO pins have been fully powered up. – ADC Voltage Reference Output (2 V). Requires a low ESR (under 1.5 Ω) ceramic bypass capacitor of 10 µF to analog ground. [Can accept external reference input (2 V) if the software bit is enabled for this mode. 1–10 µF low ESR capacitor can be used in the external reference mode.] NOTE: Use the ADC Clock rate to derive the ESR specification from the capacitor data sheet that is used in the system. – ADC Voltage Reference Output (1 V). Requires a low ESR (under 1.5 Ω) ceramic bypass capacitor of 10 µF to analog ground. [Can accept external reference input (1 V) if the software bit is enabled for this mode. 1–10 µF low ESR capacitor can be used in the external reference mode.] NOTE: Use the ADC Clock rate to derive the ESR specification from the capacitor data sheet that is used in the system. Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 21 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION ADC External Current Bias Resistor. Use 24.9 kΩ ± 5% for ADC clock range 1–18.75 MHz; use 20 kΩ ± 5% for ADC clock range 18.75 MHz–25 MHz. ADCRESEXT F2 16 16 O – ADCBGREFIN E6 164 116 – – Test Pin. Reserved for TI. Must be left unconnected. AVSSREFBG E3 12 12 – – ADC Analog GND AVDDREFBG E1 13 13 – – ADC Analog Power (3.3-V) ADCLO B3 175 127 – – Common Low Side Analog Input. Connect to analog ground. VSSA1 F3 15 15 – – ADC Analog GND VSSA2 C5 165 117 – – ADC Analog GND VDDA1 F4 14 14 – – ADC Analog 3.3-V Supply VDDA2 A5 166 118 – – ADC Analog 3.3-V Supply VSS1 C6 163 115 – – ADC Digital GND VDD1 A6 162 114 – – ADC Digital 1.8-V (or 1.9-V) Supply VDDAIO B2 1 1 – – 3.3-V Analog I/O Power Pin VSSAIO A2 176 128 – – Analog I/O Ground Pin VDD H1 23 20 – – VDD L1 37 29 – – VDD P5 56 42 – – VDD P9 75 56 – – VDD P12 – 63 – – VDD K12 100 74 – – VDD G12 112 82 – – VDD C14 128 94 – – VDD B10 143 102 – – VDD C8 154 110 – – VSS G4 19 17 – – VSS K1 32 26 – – VSS L2 38 30 – – VSS P4 52 39 – – VSS K6 58 – – – VSS P8 70 53 – – VSS M10 78 59 – – VSS L11 86 62 – – VSS K13 99 73 – – VSS J14 105 – – – VSS G13 113 – – – VSS E14 120 88 – – VSS B14 129 95 – – VSS D10 142 – – – VSS C10 – 103 – – VSS B8 153 109 – – POWER SIGNALS 22 Introduction 1.8-V or 1.9-V Core Digital Power Pins. See Section 6.2, Recommended Operating Conditions, for voltage requirements. Core and Digital I/O Ground Pins Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 2-2. Signal Descriptions(1) (continued) PIN NO. 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) VDDIO J4 31 25 – – VDDIO L7 64 49 – – VDDIO L10 81 – – – VDDIO N14 – – – – VDDIO G11 114 83 – – VDDIO E9 145 104 – – NAME VDD3VFL N8 69 52 – – DESCRIPTION 3 3-V I/O Digital Power Pins 3.3-V Flash Core Power Pin. This pin should be connected to 3.3 V at all times after powerup sequence requirements have been met. This pin is used as VDDIO in ROM parts and must be connected to 3.3 V in ROM parts as well. GPIO OR PERIPHERAL SIGNALS GPIOA OR EVA SIGNALS GPIOA0 - PWM1 (O) M12 92 68 I/O PU GPIO or PWM Output Pin #1 GPIOA1 - PWM2 (O) M14 93 69 I/O PU GPIO or PWM Output Pin #2 GPIOA2 - PWM3 (O) L12 94 70 I/O PU GPIO or PWM Output Pin #3 GPIOA3 - PWM4 (O) L13 95 71 I/O PU GPIO or PWM Output Pin #4 GPIOA4 - PWM5 (O) K11 98 72 I/O PU GPIO or PWM Output Pin #5 GPIOA5 - PWM6 (O) K14 101 75 I/O PU GPIO or PWM Output Pin #6 GPIOA6 T1PWM_T1CMP (I) J11 102 76 I/O PU GPIO or Timer 1 Output GPIOA7 T2PWM_T2CMP (I) J13 104 77 I/O PU GPIO or Timer 2 Output GPIOA8 - CAP1_QEP1 (I) H10 106 78 I/O PU GPIO or Capture Input #1 GPIOA9 - CAP2_QEP2 (I) H11 107 79 I/O PU GPIO or Capture Input #2 GPIOA10 - CAP3_QEPI1 (I) H12 109 80 I/O PU GPIO or Capture Input #3 GPIOA11 - TDIRA (I) F14 116 85 I/O PU GPIO or Timer Direction GPIOA12 - TCLKINA (I) F13 117 86 I/O PU GPIO or Timer Clock Input GPIOA13 - C1TRIP (I) E13 122 89 I/O PU GPIO or Compare 1 Output Trip GPIOA14 - C2TRIP (I) E11 123 90 I/O PU GPIO or Compare 2 Output Trip GPIOA15 - C3TRIP (I) F10 124 91 I/O PU GPIO or Compare 3 Output Trip GPIOB OR EVB SIGNALS GPIOB0 - PWM7 (O) N2 45 33 I/O PU GPIO or PWM Output Pin #7 GPIOB1 - PWM8 (O) P2 46 34 I/O PU GPIO or PWM Output Pin #8 GPIOB2 - PWM9 (O) N3 47 35 I/O PU GPIO or PWM Output Pin #9 GPIOB3 - PWM10 (O) P3 48 36 I/O PU GPIO or PWM Output Pin #10 GPIOB4 - PWM11 (O) L4 49 37 I/O PU GPIO or PWM Output Pin #11 GPIOB5 - PWM12 (O) M4 50 38 I/O PU GPIO or PWM Output Pin #12 GPIOB6 T3PWM_T3CMP (I) K5 53 40 I/O PU GPIO or Timer 3 Output GPIOB7 T4PWM_T4CMP (I) N5 55 41 I/O PU GPIO or Timer 4 Output GPIOB8 - CAP4_QEP3 (I) M5 57 43 I/O PU GPIO or Capture Input #4 GPIOB9 - CAP5_QEP4 (I) M6 59 44 I/O PU GPIO or Capture Input #5 GPIOB10 - CAP6_QEPI2 (I) P6 60 45 I/O PU GPIO or Capture Input #6 GPIOB11 - TDIRB (I) L8 71 54 I/O PU GPIO or Timer Direction GPIOB12 - TCLKINB (I) K8 72 55 I/O PU GPIO or Timer Clock Input Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 23 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 2-2. Signal Descriptions(1) (continued) PIN NO. 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) GPIOB13 - C4TRIP (I) N6 61 46 I/O PU GPIO or Compare 4 Output Trip GPIOB14 - C5TRIP (I) L6 62 47 I/O PU GPIO or Compare 5 Output Trip GPIOB15 - C6TRIP (I) K7 63 48 I/O PU GPIO or Compare 6 Output Trip NAME DESCRIPTION GPIOD OR EVA SIGNALS GPIOD0 T1CTRIP_PDPINTA (I) H14 110 81 I/O PU GPIO or Timer 1 Compare Output Trip GPIOD1 T2CTRIP/EVASOC (I) G10 115 84 I/O PU GPIO or Timer 2 Compare Output Trip or External ADC Start-of-Conversion EV-A GPIOD OR EVB SIGNALS GPIOD5 T3CTRIP_PDPINTB (I) P10 79 60 I/O PU GPIO or Timer 3 Compare Output Trip GPIOD6 T4CTRIP/EVBSOC (I) P11 83 61 I/O PU GPIO or Timer 4 Compare Output Trip or External ADC Start-of-Conversion EV-B GPIOE0 - XINT1_XBIO (I) D9 149 106 I/O/Z – GPIO or XINT1 or XBIO input GPIOE1 XINT2_ADCSOC (I) D8 151 108 I/O/Z – GPIO or XINT2 or ADC start-of-conversion GPIOE2 - XNMI_XINT13 (I) E8 150 107 I/O PU GPIOE OR INTERRUPT SIGNALS GPIO or XNMI or XINT13 GPIOF OR SPI SIGNALS GPIOF0 - SPISIMOA (O) M1 40 31 I/O/Z – GPIO or SPI slave in, master out GPIOF1 - SPISOMIA (I) N1 41 32 I/O/Z – GPIO or SPI slave out, master in GPIOF2 - SPICLKA (I/O) K2 34 27 I/O/Z – GPIO or SPI clock GPIOF3 - SPISTEA (I/O) K4 35 28 I/O/Z – GPIO or SPI slave transmit enable GPIOF4 - SCITXDA (O) C7 155 111 I/O PU GPIO or SCI asynchronous serial port TX data GPIOF5 - SCIRXDA (I) A7 157 112 I/O PU GPIO or SCI asynchronous serial port RX data GPIOF6 - CANTXA (O) N12 87 64 I/O PU GPIO or eCAN transmit data GPIOF7 - CANRXA (I) N13 89 65 I/O PU GPIO or eCAN receive data GPIOF OR SCI-A SIGNALS GPIOF OR CAN SIGNALS GPIOF OR McBSP SIGNALS GPIOF8 - MCLKXA (I/O) J1 28 23 I/O PU GPIO or McBSP transmit clock GPIOF9 - MCLKRA (I/O) H2 25 21 I/O PU GPIO or McBSP receive clock GPIOF10 - MFSXA (I/O) H4 26 22 I/O PU GPIO or McBSP transmit frame synch GPIOF11 - MFSRA (I/O) J2 29 24 I/O PU GPIO or McBSP receive frame synch GPIOF12 - MDXA (O) G1 22 19 I/O – GPIOF13 - MDRA (I) G2 20 18 I/O PU 24 Introduction GPIO or McBSP transmitted serial data GPIO or McBSP received serial data Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 2-2. Signal Descriptions(1) (continued) PIN NO. NAME 179-BALL GHH/ZHH 176-PIN PGF 128-PIN PBK I/O/Z (2) PU/PD (3) DESCRIPTION GPIOF OR XF CPU OUTPUT SIGNAL GPIOF14 XF_XPLLDIS (O) A11 140 101 I/O PU This pin has three functions: 1. XF – General-purpose output pin. 2. XPLLDIS – This pin is sampled during reset to check whether the PLL must be disabled. The PLL will be disabled if this pin is sensed low. HALT and STANDBY modes cannot be used when the PLL is disabled. 3. GPIO – GPIO function GPIOG OR SCI-B SIGNALS GPIOG4 - SCITXDB (O) P14 90 66 I/O/Z – GPIO or SCI asynchronous serial port transmit data GPIOG5 - SCIRXDB (I) M13 91 67 I/O/Z – GPIO or SCI asynchronous serial port receive data NOTE Other than the power supply pins, no pin should be driven before the 3.3-V rail has reached recommended operating conditions. However, it is acceptable for an I/O pin to ramp along with the 3.3-V supply. Introduction Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 25 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3 www.ti.com Functional Overview Memory Bus TINT0 CPU-Timer 0 CPU-Timer 1 Real-Time JTAG CPU-Timer 2 TINT2 External Interface INT14 (B) PIE (96 Interrupts) TINT1 XINT13 XNMI GPIO Pins G P I O M U X Data (16) INT[12:1] INT13 M0 SARAM 1K x 16 NMI M1 SARAM 1K x 16 SCIA/SCIB FIFO L0 SARAM 4K x 16 SPI FIFO L1 SARAM 4K x 16 McBSP FIFO eCAN Address (19) (XINTF) (A) External Interrupt Control (XINT1/2/13, XNMI) Control C28x CPU Flash 128K x 16 (F2812) 128K x 16 (F2811) 64K x 16 (F2810) EVA/EVB 16 Channels XRS 12-Bit ADC System Control X1/XCLKIN (Oscillator and PLL + Peripheral Clocking + Low-Power Modes + Watchdog) X2 XF_XPLLDIS ROM 128K x 16 (C2812) 128K x 16 (C2811) 64K x 16 (C2810) (C) RS OTP 1K x 16 CLKIN H0 SARAM 8K x 16 Memory Bus Boot ROM 4K x 16 Peripheral Bus Protected by the code-security module. A. B. C. 45 of the possible 96 interrupts are used on the devices. XINTF is available on the F2812 and C2812 devices only. On C281x devices, the OTP is replaced with a 1K x 16 block of ROM. Figure 3-1. Functional Block Diagram 26 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 3.1 SPRS174T – APRIL 2001 – REVISED MAY 2012 Memory Map Block Start Address On-Chip Memory Prog Space Data Space 0x00 0000 0x00 0040 Low 64K (24x/240x Equivalent Data Space) 0x00 0400 0x00 0800 0x00 0D00 0x00 0E00 External Memory XINTF Prog Space Data Space × x 32) M0 Vector - RAM (32 (Enabled if VMAP = 0) M0 SARAM (1K x 16) M1 SARAM (1K x 16) × Reserved Peripheral Frame 0 PIE Vector - RAM (256 x 16) (Enabled if VMAP = 1, ENPIE = 1) Reserved Reserved 0x00 2000 XINTF Zone 0 ×(8K x 16, XZCS0AND1) Reserved 0x00 6000 Peripheral Frame 1 (Protected) 0x00 7000 Peripheral Frame 2 (Protected) XINTF Zone 1 (8K x 16, XZCS0AND1) (Protected) 0x00 2000 0x00 4000 Reserved 0x00 8000 L0 SARAM (4K x 16, Secure Block) 0x00 9000 L1 SARAM ×(4K x 16, Secure Block) Reserved 0x00 A000 Reserved XINTF Zone 2 ×(0.5M x 16, XZCS2) 0x08 0000 XINTF Zone 6 (0.5M x 16, XZCS6AND7) 0x10 0000 0x18 0000 High 64K (24x/240x Equivalent Program Space) 0x3D 7800 OTP (or ROM) (1K x 16, Secure Block) 0x3D 7C00 Reserved (1K) 0x3D 8000 Flash (or ROM) (128K x 16, Secure Block) 128-Bit Password 0x3F 7FF8 0x3F 8000 Reserved H0 SARAM (8K x 16) 0x3F A000 Reserved 0x3F F000 0x3F FFC0 Boot ROM (4K x 16) (Enabled if MP/MC = 0) BROM Vector× - ROM (32 x 32) (Enabled if VMAP = 1, MP/MC = 0, ENPIE = 0) 0x3F C000 × x 16, XZCS6AND7) XINTF Zone 7 (16K (Enabled if MP/MC = 1) XINTF Vector - RAM (32 x 32) (Enabled if VMAP = 1, MP/MC = 1, ENPIE = 0) LEGEND: Only one of these vector maps - M0 vector, PIE vector, BROM vector, XINTF vector - should be enabled at a time. A. B. C. D. E. F. G. Memory blocks are not to scale. Reserved locations are reserved for future expansion. Application should not access these areas. Boot ROM and Zone 7 memory maps are active either in on-chip or XINTF zone depending on MP/MC, not in both. Peripheral Frame 0, Peripheral Frame 1, and Peripheral Frame 2 memory maps are restricted to data memory only. User program cannot access these memory maps in program space. “Protected” means the order of Write followed by Read operations is preserved rather than the pipeline order. Certain memory ranges are EALLOW protected against spurious writes after configuration. Zones 0 and 1 and Zones 6 and 7 share the same chip select; hence, these memory blocks have mirrored locations. Figure 3-2. F2812/C2812 Memory Map Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 27 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Block Start Address On-Chip Memory Prog Space Data Space 0x00 0000 0x00 0040 Low 64K (24x/240x Equivalent Data Space) 0x00 0400 0x00 0800 0x00 0D00 0x00 0E00 × x 32) M0 Vector - RAM (32 (Enabled if VMAP = 0) M0 SARAM (1K x 16) M1 SARAM (1K x 16) × Peripheral Frame 0 PIE Vector - RAM (256 x 16) (Enabled if VMAP = 1, ENPIE = 1) Reserved Reserved 0x00 2000 Reserved 0x00 6000 Peripheral Frame 1 (Protected) 0x00 7000 Peripheral Frame 2 (Protected) Reserved 0x00 8000 L0 SARAM (4K x 16, Secure Block) 0x00 9000 L1 SARAM ×(4K x 16, Secure Block) 0x00 A000 Reserved High 64K (24x/240x Equivalent Program Space) 0x3D 7800 OTP (or ROM) (1K x 16, Secure Block) 0x3D 7C00 Reserved (1K) 0x3D 8000 Flash (or ROM) (128K x 16, Secure Block) 128-Bit Password 0x3F 7FF8 0x3F 8000 H0 SARAM (8K x 16) 0x3F A000 Reserved 0x3F F000 0x3F FFC0 Boot ROM (4K x 16) (Enabled if MP/MC = 0) BROM Vector× - ROM (32 x 32) (Enabled if VMAP = 1, MP/MC = 0, ENPIE = 0) LEGEND: Only one of these vector maps - M0 vector, PIE vector, BROM vector - should be enabled at a time. A. B. C. D. E. Memory blocks are not to scale. Reserved locations are reserved for future expansion. Application should not access these areas. Peripheral Frame 0, Peripheral Frame 1, and Peripheral Frame 2 memory maps are restricted to data memory only. User program cannot access these memory maps in program space. “Protected” means the order of Write followed by Read operations is preserved rather than the pipeline order. Certain memory ranges are EALLOW protected against spurious writes after configuration. Figure 3-3. F2811/C2811 Memory Map 28 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Block Start Address On-Chip Memory Prog Space Data Space 0x00 0000 0x00 0040 Low 64K (24x/240x Equivalent Data Space) 0x00 0400 0x00 0800 0x00 0D00 0x00 0E00 × x 32) M0 Vector - RAM (32 (Enabled if VMAP = 0) M0 SARAM (1K x 16) M1 SARAM (1K x 16) × Peripheral Frame 0 PIE Vector - RAM (256 x 16) (Enabled if VMAP = 1, ENPIE = 1) Reserved Reserved 0x00 2000 Reserved 0x00 6000 Peripheral Frame 1 (Protected) 0x00 7000 Peripheral Frame 2 (Protected) Reserved 0x00 8000 L0 SARAM (4K x 16, Secure Block) 0x00 9000 L1 SARAM ×(4K x 16, Secure Block) 0x00 A000 Reserved High 64K (24x/240x Equivalent Program Space) 0x3D 7800 OTP (or ROM) (1K x 16, Secure Block) 0x3D 7C00 Reserved 0x3E 8000 Flash (or ROM) (64K x 16, Secure Block) 128-Bit Password 0x3F 7FF8 0x3F 8000 H0 SARAM (8K x 16) 0x3F A000 Reserved 0x3F F000 0x3F FFC0 Boot ROM (4K x 16) (Enabled if MP/MC = 0) BROM Vector× - ROM (32 x 32) (Enabled if VMAP = 1, MP/MC = 0, ENPIE = 0) LEGEND: Only one of these vector maps - M0 vector, PIE vector, BROM vector - should be enabled at a time. A. B. C. D. E. Memory blocks are not to scale. Reserved locations are reserved for future expansion. Application should not access these areas. Peripheral Frame 0, Peripheral Frame 1, and Peripheral Frame 2 memory maps are restricted to data memory only. User program cannot access these memory maps in program space. “Protected” means the order of Write followed by Read operations is preserved rather than the pipeline order. Certain memory ranges are EALLOW protected against spurious writes after configuration. Figure 3-4. F2810/C2810 Memory Map Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 29 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 3-1. Addresses of Flash Sectors in F2812 and F2811 ADDRESS RANGE PROGRAM AND DATA SPACE 0x3D 8000 0x3D 9FFF Sector J, 8K x 16 0x3D A000 0x3D BFFF Sector I, 8K x 16 0x3D C000 0x3D FFFF Sector H, 16K x 16 0x3E 0000 0x3E 3FFF Sector G, 16K x 16 0x3E 4000 0x3E 7FFF Sector F, 16K x 16 0x3E 8000 0x3E BFFF Sector E, 16K x 16 0x3E C000 0x3E FFFF Sector D, 16K x 16 0x3F 0000 0x3F 3FFF Sector C, 16K x 16 0x3F 4000 0x3F 5FFF Sector B, 8K x 16 0x3F 6000 Sector A, 8K x 16 0x3F 7F80 0x3F 7FF5 Program to 0x0000 when using the Code Security Module 0x3F 7FF6 0x3F 7FF7 Boot-to-Flash (or ROM) Entry Point (program branch instruction here) 0x3F 7FF8 0x3F 7FFF Security Password (128-Bit) (Do not program to all zeros) Table 3-2. Addresses of Flash Sectors in F2810 ADDRESS RANGE PROGRAM AND DATA SPACE 0x3E 8000 0x3E BFFF Sector E, 16K x 16 0x3E C000 0x3E FFFF Sector D, 16K x 16 0x3F 0000 0x3F 3FFF Sector C, 16K x 16 0x3F 4000 0x3F 5FFF Sector B, 8K x 16 0x3F 6000 Sector A, 8K x 16 0x3F 7F80 0x3F 7FF5 Program to 0x0000 when using the Code Security Module 0x3F 7FF6 0x3F 7FF7 Boot-to-Flash (or ROM) Entry Point (program branch instruction here) 0x3F 7FF8 0x3F 7FFF Security Password (128-Bit) (Do not program to all zeros) The “Low 64K” of the memory address range maps into the data space of the 240x. The “High 64K” of the memory address range maps into the program space of the 24x/240x. 24x/240x-compatible code will execute only from the “High 64K”memory area. Hence, the top 32K of Flash/ROM and H0 SARAM block can be used to run 24x/240x-compatible code (if MP/MC mode is low) or, on the 2812, code can be executed from XINTF Zone 7 (if MP/MC mode is high). 30 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 The XINTF consists of five independent zones. One zone has its own chip select and the remaining four zones share two chip selects. Each zone can be programmed with its own timing (wait states) and to either sample or ignore external ready signal. This makes interfacing to external peripherals easy and glueless. NOTE The chip selects of XINTF Zone 0 and Zone 1 are merged into a single chip select (XZCS0AND1); and the chip selects of XINTF Zone 6 and Zone 7 are merged into a single chip select (XZCS6AND7). See Section 3.5, External Interface, XINTF (2812 only), for details. Peripheral Frame 1, Peripheral Frame 2, and XINTF Zone 1 are grouped together to enable these blocks to be “write/read peripheral block protected”. The “protected” mode ensures that all accesses to these blocks happen as written. Because of the C28x pipeline, a write immediately followed by a read, to different memory locations, will appear in reverse order on the memory bus of the CPU. This can cause problems in certain peripheral applications where the user expected the write to occur first (as written). The C28x CPU supports a block protection mode where a region of memory can be protected to make sure that operations occur as written (the penalty is extra cycles that are added to align the operations). This mode is programmable and, by default, it will protect the selected zones. On the 2812, at reset, XINTF Zone 7 is accessed if the XMP/MC pin is pulled high. This signal selects microprocessor or microcomputer mode of operation. In microprocessor mode, Zone 7 is mapped to high memory such that the vector table is fetched externally. The Boot ROM is disabled in this mode. In microcomputer mode, Zone 7 is disabled such that the vectors are fetched from Boot ROM. This allows the user to either boot from on-chip memory or from off-chip memory. The state of the XMP/MC signal on reset is stored in an MP/MC mode bit in the XINTCNF2 register. The user can change this mode in software and hence control the mapping of Boot ROM and XINTF Zone 7. No other memory blocks are affected by XMP/MC. I/O space is not supported on the 2812 XINTF. The wait states for the various spaces in the memory map area are listed in Table 3-3. Table 3-3. Wait States AREA WAIT-STATES M0 and M1 SARAMs 0-wait Fixed COMMENTS Peripheral Frame 0 0-wait Fixed Peripheral Frame 1 0-wait (writes) 2-wait (reads) Fixed Peripheral Frame 2 0-wait (writes) 2-wait (reads) Fixed L0 and L1 SARAMs 0-wait Fixed OTP (or ROM) Programmable, 1-wait minimum Programmed via the Flash registers. 1-wait-state operation is possible at a reduced CPU frequency. See Section 3.2.6, Flash (F281x Only), for more information. Flash (or ROM) Programmable, 0-wait minimum Programmed via the Flash registers. 0-wait-state operation is possible at reduced CPU frequency. The CSM password locations are hardwired for 16 wait states. See Section 3.2.6, Flash (F281x Only), for more information. H0 SARAM 0-wait Fixed Boot-ROM 1-wait Fixed XINTF Programmable, 1-wait minimum Programmed via the XINTF registers. Cycles can be extended by external memory or peripheral. 0-wait operation is not possible. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 31 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.2 3.2.1 www.ti.com Brief Descriptions C28x CPU The C28x™ DSP generation is the newest member of the TMS320C2000™ DSP platform. The C28x is source code compatible to the 24x/240x DSP devices, hence existing 240x users can leverage their significant software investment. Additionally, the C28x is a very efficient C/C++ engine, enabling users to develop not only their system control software in a high-level language, but also enables math algorithms to be developed using C/C++. The C28x is as efficient in DSP math tasks as it is in system control tasks that typically are handled by microcontroller devices. This efficiency removes the need for a second processor in many systems. The 32 x 32-bit MAC capabilities of the C28x and its 64-bit processing capabilities, enable the C28x to efficiently handle higher numerical resolution problems that would otherwise demand a more expensive floating-point processor solution. Add to this the fast interrupt response with automatic context save of critical registers, resulting in a device that is capable of servicing many asynchronous events with minimal latency. The C28x has an 8-level-deep protected pipeline with pipelined memory accesses. This pipelining enables the C28x to execute at high speeds without resorting to expensive high-speed memories. Special branch-look-ahead hardware minimizes the latency for conditional discontinuities. Special store conditional operations further improve performance. 3.2.2 Memory Bus (Harvard Bus Architecture) As with many DSP type devices, multiple busses are used to move data between the memories and peripherals and the CPU. The C28x memory bus architecture contains a program read bus, data read bus and data write bus. The program read bus consists of 22 address lines and 32 data lines. The data read and write busses consist of 32 address lines and 32 data lines each. The 32-bit-wide data busses enable single cycle 32-bit operations. The multiple bus architecture, commonly termed “Harvard Bus”, enables the C28x to fetch an instruction, read a data value and write a data value in a single cycle. All peripherals and memories attached to the memory bus will prioritize memory accesses. Generally, the priority of Memory Bus accesses can be summarized as follows: Highest: Data Writes (Simultaneous data and program writes cannot occur on the memory bus.) Program Writes (Simultaneous data and program writes cannot occur on the memory bus.) Data Reads Program Reads (Simultaneous program reads and fetches cannot occur on the memory bus.) Lowest: Fetches (Simultaneous program reads and fetches cannot occur on the memory bus.) 3.2.3 Peripheral Bus To enable migration of peripherals between various Texas Instruments ( TI™) DSP family of devices, the F281x and C281x adopt a peripheral bus standard for peripheral interconnect. The peripheral bus bridge multiplexes the various busses that make up the processor “Memory Bus” into a single bus consisting of 16 address lines and 16 or 32 data lines and associated control signals. Two versions of the peripheral bus are supported on the F281x and C281x. One version only supports 16-bit accesses (called peripheral frame 2) and this retains compatibility with C240x-compatible peripherals. The other version supports both 16- and 32-bit accesses (called peripheral frame 1). 32 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 3.2.4 SPRS174T – APRIL 2001 – REVISED MAY 2012 Real-Time JTAG and Analysis The F281x and C281x implement the standard IEEE 1149.1 JTAG interface. Additionally, the F281x and C281x support real-time mode of operation whereby the contents of memory, peripheral, and register locations can be modified while the processor is running and executing code and servicing interrupts. The user can also single step through non-time critical code while enabling time-critical interrupts to be serviced without interference. The F281x and C281x implement the real-time mode in hardware within the CPU. This is a unique feature to the F281x and C281x, no software monitor is required. Additionally, special analysis hardware is provided that allows the user to set hardware breakpoint or data/address watch-points and generate various user selectable break events when a match occurs. 3.2.5 External Interface (XINTF) (2812 Only) This asynchronous interface consists of 19 address lines, 16 data lines, and three chip-select lines. The chip-select lines are mapped to five external zones, Zones 0, 1, 2, 6, and 7. Zones 0 and 1 share a single chip-select; Zones 6 and 7 also share a single chip-select. Each of the five zones can be programmed with a different number of wait states, strobe signal setup and hold timing and each zone can be programmed for extending wait states externally or not. The programmable wait-state, chip-select and programmable strobe timing enables glueless interface to external memories and peripherals. 3.2.6 Flash (F281x Only) The F2812 and F2811 contain 128K x 16 of embedded flash memory, segregated into four 8K x 16 sectors, and six 16K x 16 sectors. The F2810 has 64K x 16 of embedded flash, segregated into two 8K x 16 sectors, and three 16K x 16 sectors. All three devices also contain a single 1K x 16 of OTP memory at address range 0x3D 7800–0x3D 7BFF. The user can individually erase, program, and validate a flash sector while leaving other sectors untouched. However, it is not possible to use one sector of the flash or the OTP to execute flash algorithms that erase/program other sectors. Special memory pipelining is provided to enable the flash module to achieve higher performance. The flash/OTP is mapped to both program and data space; therefore, it can be used to execute code or store data information. NOTE The F2810/F2811/F2812 Flash and OTP wait states can be configured by the application. This allows applications running at slower frequencies to configure the flash to use fewer wait states. Flash effective performance can be improved by enabling the flash pipeline mode in the Flash options register. With this mode enabled, effective performance of linear code execution will be much faster than the raw performance indicated by the wait state configuration alone. The exact performance gain when using the Flash pipeline mode is application-dependent. For more information on the Flash options, Flash wait-state, and OTP wait-state registers, see the TMS320x281x DSP System Control and Interrupts Reference Guide (literature number SPRU078). 3.2.7 ROM (C281x Only) The C2812 and C2811 contain 128K x 16 of ROM. The C2810 has 64K x 16 of ROM. In addition to this, there is a 1K x 16 ROM block that replaces the OTP memory available in flash devices. For information on how to submit ROM codes to TI, see the TMS320C28x CPU and Instruction Set Reference Guide (literature number SPRU430). Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 33 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.2.8 www.ti.com M0, M1 SARAMs All C28x devices contain these two blocks of single access memory, each 1K x 16 in size. The stack pointer points to the beginning of block M1 on reset. The M0 block overlaps the 240x device B0, B1, B2 RAM blocks and hence the mapping of data variables on the 240x devices can remain at the same physical address on C28x devices. The M0 and M1 blocks, like all other memory blocks on C28x devices, are mapped to both program and data space. Hence, the user can use M0 and M1 to execute code or for data variables. The partitioning is performed within the linker. The C28x device presents a unified memory map to the programmer. This makes for easier programming in high-level languages. 3.2.9 L0, L1, H0 SARAMs The F281x and C281x contain an additional 16K x 16 of single-access RAM, divided into three blocks (4K + 4K + 8K). Each block can be independently accessed hence minimizing pipeline stalls. Each block is mapped to both program and data space. 3.2.10 Boot ROM The Boot ROM is factory-programmed with boot-loading software. The Boot ROM program executes after device reset and checks several GPIO pins to determine which boot mode to enter. For example, the user can select to execute code already present in the internal Flash or download new software to internal RAM through one of several serial ports. Other boot modes exist as well. The Boot ROM also contains standard tables, such as SIN/COS waveforms, for use in math-related algorithms. Table 3-4 shows the details of how various boot modes may be invoked. See the TMS320x281x DSP Boot ROM Reference Guide (literature number SPRU095), for more information. Table 3-4. Boot Mode Selection (1) (2) BOOT MODE SELECTED GPIO PU status (3) GPIOF4 (SCITXDA) GPIOF12 (MDXA) GPIOF3 (SPISTEA) GPIOF2 (SPICLK) PU No PU No PU No PU Jump to Flash/ROM address 0x3F 7FF6. A branch instruction must have been programmed here prior to reset to re-direct code execution as desired. 1 x x x Call SPI_Boot to load from an external serial SPI EEPROM 0 1 x x Call SCI_Boot to load from SCI-A 0 0 1 1 Jump to H0 SARAM address 0x3F 8000 0 0 1 0 Jump to OTP address 0x3D 7800 0 0 0 1 Call Parallel_Boot to load from GPIO Port B 0 0 0 0 (1) (2) (3) Extra care must be taken due to any effect toggling SPICLK to select a boot mode may have on external logic. If the boot mode selected is Flash, H0, or OTP, then no external code is loaded by the bootloader. PU = pin has an internal pullup. No PU = pin does not have an internal pullup. 3.2.11 Security The F281x and C281x support high levels of security to protect the user firmware from being reverseengineered. The security features a 128-bit password (hardcoded for 16 wait states), which the user programs into the flash. One code security module (CSM) is used to protect the flash/ROM/OTP and the L0/L1 SARAM blocks. The security feature prevents unauthorized users from examining the memory contents via the JTAG port, executing code from external memory or trying to boot-load some undesirable software that would export the secure memory contents. To enable access to the secure blocks, the user must write the correct 128-bit ”KEY” value, which matches the value stored in the password locations within the Flash/ROM. 34 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 NOTE • • • • When the code-security passwords are programmed, all addresses between 0x3F 7F80 and 0x3F 7FF5 cannot be used as program code or data. These locations must be programmed to 0x0000. If the code security feature is not used, addresses 0x3F 7F80 through 0x3F 7FEF may be used for code or data. On ROM devices, addresses 0x3F 7FF2–0x3F 7FF5 and 0x3D 7BFC–0x3D 7BFF are reserved for TI, irrespective of whether code security has been used or not. User application should not use these locations in any way. The 128-bit password (at 0x3F 7FF8–0x3F 7FFF) must not be programmed to zeros. Doing so would permanently lock the device. Table 3-5. Impact of Using the Code Security Module ADDRESS CODE SECURITY STATUS Code Security Enabled Code Security Disabled Fill with 0x0000 Application code and data (1) 0x3F 7F80 – 0x3F 7FEF 0x3F 7FF0 – 0x3F 7FF5 0x3D 7BFC – 0x3D 7BFF (1) Application code and data See the TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810, TMS320C2811, TMS320C2812 DSP Silicon Errata (literature number SPRZ193) for some restrictions. Disclaimer Code Security Module Disclaimer THE CODE SECURITY MODULE (CSM) INCLUDED ON THIS DEVICE WAS DESIGNED TO PASSWORD PROTECT THE DATA STORED IN THE ASSOCIATED MEMORY (EITHER ROM OR FLASH) AND IS WARRANTED BY TEXAS INSTRUMENTS (TI), IN ACCORDANCE WITH ITS STANDARD TERMS AND CONDITIONS, TO CONFORM TO TI'S PUBLISHED SPECIFICATIONS FOR THE WARRANTY PERIOD APPLICABLE FOR THIS DEVICE. TI DOES NOT, HOWEVER, WARRANT OR REPRESENT THAT THE CSM CANNOT BE COMPROMISED OR BREACHED OR THAT THE DATA STORED IN THE ASSOCIATED MEMORY CANNOT BE ACCESSED THROUGH OTHER MEANS. MOREOVER, EXCEPT AS SET FORTH ABOVE, TI MAKES NO WARRANTIES OR REPRESENTATIONS CONCERNING THE CSM OR OPERATION OF THIS DEVICE, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL TI BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL, INDIRECT, INCIDENTAL, OR PUNITIVE DAMAGES, HOWEVER CAUSED, ARISING IN ANY WAY OUT OF YOUR USE OF THE CSM OR THIS DEVICE, WHETHER OR NOT TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO LOSS OF DATA, LOSS OF GOODWILL, LOSS OF USE OR INTERRUPTION OF BUSINESS OR OTHER ECONOMIC LOSS. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 35 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com 3.2.12 Peripheral Interrupt Expansion (PIE) Block The PIE block serves to multiplex numerous interrupt sources into a smaller set of interrupt inputs. The PIE block can support up to 96 peripheral interrupts. On the F281x and C281x, 45 of the possible 96 interrupts are used by peripherals. The 96 interrupts are grouped into blocks of 8 and each group is fed into 1 of 12 CPU interrupt lines (INT1 to INT12). Each of the 96 interrupts is supported by its own vector stored in a dedicated RAM block that can be overwritten by the user. The vector is automatically fetched by the CPU on servicing the interrupt. It takes 8 CPU clock cycles to fetch the vector and save critical CPU registers. Hence the CPU can quickly respond to interrupt events. Prioritization of interrupts is controlled in hardware and software. Each individual interrupt can be enabled/disabled within the PIE block. 3.2.13 External Interrupts (XINT1, XINT2, XINT13, XNMI) The F281x and C281x support three masked external interrupts (XINT1, 2, 13). XINT13 is combined with one non-masked external interrupt (XNMI). The combined signal name is XNMI_XINT13. Each of the interrupts can be selected for negative or positive edge triggering and can also be enabled/disabled (including the XNMI). The masked interrupts also contain a 16-bit free-running up-counter, which is reset to zero when a valid interrupt edge is detected. This counter can be used to accurately time-stamp the interrupt. 3.2.14 Oscillator and PLL The F281x and C281x can be clocked by an external oscillator or by a crystal attached to the on-chip oscillator circuit. A PLL is provided supporting up to 10-input clock-scaling ratios. The PLL ratios can be changed on-the-fly in software, enabling the user to scale back on operating frequency if lower power operation is desired. Refer to Section 6, Electrical Specifications, for timing details. The PLL block can be set in bypass mode. 3.2.15 Watchdog The F281x and C281x support a watchdog timer. The user software must regularly reset the watchdog counter within a certain time frame; otherwise, the watchdog will generate a reset to the processor. The watchdog can be disabled if necessary. 3.2.16 Peripheral Clocking The clocks to each individual peripheral can be enabled/disabled to reduce power consumption when a peripheral is not in use. Additionally, the system clock to the serial ports (except eCAN) and the event managers, CAP and QEP blocks can be scaled relative to the CPU clock. This enables the timing of peripherals to be decoupled from increasing CPU clock speeds. 3.2.17 Low-Power Modes The F281x and C281x devices are fully static CMOS devices. Three low-power modes are provided: 36 IDLE: Place CPU in low-power mode. Peripheral clocks may be turned off selectively and only those peripherals that must function during IDLE are left operating. An enabled interrupt from an active peripheral will wake the processor from IDLE mode. STANDBY: Turns off clock to CPU and peripherals. This mode leaves the oscillator and PLL functional. An external interrupt event will wake the processor and the peripherals. Execution begins on the next valid cycle after detection of the interrupt event. HALT: Turns off the internal oscillator. This mode basically shuts down the device and places it in the lowest possible power consumption mode. Only a reset or XNMI can wake the device from this mode. Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 3.2.18 Peripheral Frames 0, 1, 2 (PFn) The F281x and C281x segregate peripherals into three sections. The mapping of peripherals is as follows: PF0: XINTF: External Interface Configuration Registers (2812 only) PIE: PIE Interrupt Enable and Control Registers Plus PIE Vector Table Flash: Flash Control, Programming, Erase, Verify Registers Timers: CPU-Timers 0, 1, 2 Registers CSM: Code Security Module KEY Registers PF1: eCAN: eCAN Mailbox and Control Registers PF2: SYS: System Control Registers GPIO: GPIO Mux Configuration and Control Registers EV: Event Manager (EVA/EVB) Control Registers McBSP: McBSP Control and TX/RX Registers SCI: Serial Communications Interface (SCI) Control and RX/TX Registers SPI: Serial Peripheral Interface (SPI) Control and RX/TX Registers ADC: 12-Bit ADC Registers 3.2.19 General-Purpose Input/Output (GPIO) Multiplexer Most of the peripheral signals are multiplexed with general-purpose I/O (GPIO) signals. This multiplexing enables use of a pin as GPIO if the peripheral signal or function is not used. On reset, all GPIO pins are configured as inputs. The user can then individually program each pin for GPIO mode or peripheral signal mode. For specific inputs, the user can also select the number of input qualification cycles to filter unwanted noise glitches. 3.2.20 32-Bit CPU-Timers (0, 1, 2) CPU-Timers 0, 1, and 2 are identical 32-bit timers with presettable periods and with 16-bit clock prescaling. The timers have a 32-bit count-down register, which generates an interrupt when the counter reaches zero. The counter is decremented at the CPU clock speed divided by the prescale value setting. When the counter reaches zero, it is automatically reloaded with a 32-bit period value. CPU-Timer 2 is reserved for the DSP/BIOS Real-Time OS, and is connected to INT14 of the CPU. If DSP/BIOS is not being used, CPU-Timer 2 is available for general use. CPU-Timer 1 is for general use and can be connected to INT13 of the CPU. CPU-Timer 0 is also for general use and is connected to the PIE block. 3.2.21 Control Peripherals The F281x and C281x support the following peripherals that are used for embedded control and communication: EV: The event manager module includes general-purpose timers, full-compare/PWM units, capture inputs (CAP) and quadrature-encoder pulse (QEP) circuits. Two such event managers are provided which enable two three-phase motors to be driven or four twophase motors. The event managers on the F281x and C281x are compatible to the event managers on the 240x devices (with some minor enhancements). ADC: The ADC block is a 12-bit converter, single ended, 16-channels. It contains two sampleand-hold units for simultaneous sampling. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 37 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com 3.2.22 Serial Port Peripherals The F281x and C281x support the following serial communication peripherals: 38 eCAN: This is the enhanced version of the CAN peripheral. It supports 32 mailboxes, time stamping of messages, and is CAN 2.0B-compliant. McBSP: The multichannel buffered serial port (McBSP) connects to E1/T1 lines, phone-quality codecs for modem applications or high-quality stereo audio DAC devices. The McBSP receive and transmit registers are supported by a 16-level FIFO that significantly reduces the overhead for servicing this peripheral. SPI: The SPI is a high-speed, synchronous serial I/O port that allows a serial bit stream of programmed length (one to sixteen bits) to be shifted into and out of the device at a programmable bit-transfer rate. Normally, the SPI is used for communications between the DSP controller and external peripherals or another processor. Typical applications include external I/O or peripheral expansion through devices such as shift registers, display drivers, and ADCs. Multi-device communications are supported by the master/slave operation of the SPI. On the F281x and C281x, the port supports a 16level, receive-and-transmit FIFO for reducing servicing overhead. SCI: The serial communications interface is a two-wire asynchronous serial port, commonly known as UART. On the F281x and C281x, the port supports a 16-level, receive-andtransmit FIFO for reducing servicing overhead. Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 3.3 SPRS174T – APRIL 2001 – REVISED MAY 2012 Register Map The F281x and C281x devices contain three peripheral register spaces. The spaces are categorized as follows: Peripheral Frame 0: These are peripherals that are mapped directly to the CPU memory bus. See Table 3-6. Peripheral Frame 1: These are peripherals that are mapped to the 32-bit peripheral bus. See Table 3-7. Peripheral Frame 2: These are peripherals that are mapped to the 16-bit peripheral bus. See Table 3-8. Table 3-6. Peripheral Frame 0 Registers (1) NAME ACCESS TYPE (2) ADDRESS RANGE SIZE (x16) Device Emulation Registers 0x00 0880 – 0x00 09FF 384 Reserved 0x00 0A00 – 0x00 0A7F 128 0x00 0A80 – 0x00 0ADF 96 EALLOW protected CSM Protected Code Security Module Registers 0x00 0AE0 – 0x00 0AEF 16 EALLOW protected Reserved 0x00 0AF0 – 0x00 0B1F 48 XINTF Registers 0x00 0B20 – 0x00 0B3F 32 Reserved 0x00 0B40 – 0x00 0BFF 192 CPU-TIMER0/1/2 Registers 0x00 0C00 – 0x00 0C3F 64 Reserved 0x00 0C40 – 0x00 0CDF 160 PIE Registers 0x00 0CE0 – 0x00 0CFF 32 Not EALLOW protected PIE Vector Table 0x00 0D00 – 0x00 0DFF 256 EALLOW protected Reserved 0x00 0E00 – 0x00 0FFF 512 FLASH Registers (1) (2) (3) (3) EALLOW protected Not EALLOW protected Not EALLOW protected Registers in Frame 0 support 16-bit and 32-bit accesses. If registers are EALLOW protected, then writes cannot be performed until the user executes the EALLOW instruction. The EDIS instruction disables writes. This prevents stray code or pointers from corrupting register contents. The Flash Registers are also protected by the Code Security Module (CSM). Table 3-7. Peripheral Frame 1 Registers (1) NAME ADDRESS RANGE SIZE (x16) eCAN Registers 0x00 6000 – 0x00 60FF 256 (128 x 32) Some eCAN control registers (and selected bits in other eCAN control registers) are EALLOW-protected. eCAN Mailbox RAM 0x00 6100 – 0x00 61FF 256 (128 x 32) Not EALLOW-protected Reserved 0x00 6200 – 0x00 6FFF 3584 (1) ACCESS TYPE The eCAN control registers only support 32-bit read/write operations. All 32-bit accesses are aligned to even address boundaries. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 39 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 3-8. Peripheral Frame 2 Registers (1) NAME ADDRESS RANGE SIZE (x16) Reserved 0x00 7000 – 0x00 700F 16 System Control Registers 0x00 7010 – 0x00 702F 32 Reserved 0x00 7030 – 0x00 703F 16 SPI-A Registers 0x00 7040 – 0x00 704F 16 Not EALLOW Protected SCI-A Registers 0x00 7050 – 0x00 705F 16 Not EALLOW Protected Reserved 0x00 7060 – 0x00 706F 16 External Interrupt Registers 0x00 7070 – 0x00 707F 16 Reserved 0x00 7080 – 0x00 70BF 64 GPIO Mux Registers 0x00 70C0 – 0x00 70DF 32 EALLOW Protected GPIO Data Registers 0x00 70E0 – 0x00 70FF 32 Not EALLOW Protected Not EALLOW Protected ADC Registers 0x00 7100 – 0x00 711F 32 Reserved 0x00 7120 – 0x00 73FF 736 EV-A Registers 0x00 7400 – 0x00 743F 64 Reserved 0x00 7440 – 0x00 74FF 192 EV-B Registers 0x00 7500 – 0x00 753F 64 Reserved 0x00 7540 – 0x00 774F 528 SCI-B Registers 0x00 7750 – 0x00 775F 16 Reserved 0x00 7760 – 0x00 77FF 160 McBSP Registers 0x00 7800 – 0x00 783F 64 Reserved 0x00 7840 – 0x00 7FFF 1984 (1) 40 ACCESS TYPE EALLOW Protected Not EALLOW Protected Not EALLOW Protected Not EALLOW Protected Not EALLOW Protected Not EALLOW Protected Peripheral Frame 2 only allows 16-bit accesses. All 32-bit accesses are ignored (invalid data may be returned or written). Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 3.4 SPRS174T – APRIL 2001 – REVISED MAY 2012 Device Emulation Registers These registers are used to control the protection mode of the C28x CPU and to monitor some critical device signals. The registers are defined in Table 3-9. Table 3-9. Device Emulation Registers NAME DEVICECNF PARTID ADDRESS RANGE SIZE (x16) 0x00 0880 – 0x00 0881 2 Device Configuration Register 0x00 0882 1 Part ID Register 0x0001 or 0x0002 – F281x 0x0003 – C281x 0x0001 – Silicon Revision A 0x0002 – Silicon Revision B 0x0003 – Silicon Revisions C, D 0x0004 – Reserved 0x0005 – Silicon Revision E 0x0006 – Silicon Revision F 0x0007 – Silicon Revision G DESCRIPTION REVID 0x00 0883 1 Revision ID Register PROTSTART 0x00 0884 1 Block Protection Start Address Register PROTRANGE 0x00 0885 1 Block Protection Range Address Register 0x00 0886 – 0x00 09FF 378 Reserved Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 41 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.5 www.ti.com External Interface, XINTF (2812 Only) This section gives a top-level view of the external interface (XINTF) that is implemented on the 2812 devices. The external interface is a non-multiplexed asynchronous bus, similar to the C240x external interface. The external interface on the 2812 is mapped into five fixed zones shown in Figure 3-5. Figure 3-5 shows the 2812 XINTF signals. Data Space Prog Space 0x00 0000 XD[15:0] XA[18:0] 0x00 2000 0x00 4000 XINTF Zone 0 (8K x 16) XINTF Zone 1 (8K x 16) XZCS0 XZCS1 XZCS0AND1 0x00 6000 0x08 0000 XINTF Zone 2 (512K x 16) XZCS2 0x10 0000 XINTF Zone 6 (512K x 16) XZCS6 XINTF Zone 7 (16K x 16) (mapped here if MP/MC = 1) XZCS7 XZCS6AND7 0x18 0000 0x3F C000 0x40 0000 A. B. C. D. E. XWE XRD XR/W XREADY XMP/MC XHOLD XHOLDA (E) XCLKOUT The mapping of XINTF Zone 7 is dependent on the XMP/MC device input signal and the MP/MC mode bit (bit 8 of XINTCNF2 register). Zones 0, 1, 2, and 6 are always enabled. Each zone can be programmed with different wait states, setup and hold timing, and is supported by zone chip selects (XZCS0AND1, XZCS2, XZCS6AND7), which toggle when an access to a particular zone is performed. These features enable glueless connection to many external memories and peripherals. The chip selects for Zone 0 and Zone 1 are ANDed internally together to form one chip select (XZCS0AND1). Any external memory that is connected to XZCS0AND1 is dually mapped to both Zone 0 and Zone 1. The chip selects for Zone 6 and Zone 7 are ANDed internally together to form one chip select (XZCS6AND7). Any external memory that is connected to XZCS6AND7 is dually mapped to both Zone 6 and Zone 7. This means that if Zone 7 is disabled (via the MP/MC mode), then any external memory is still accessible via Zone 6 address space. XCLKOUT is also pinned out on the 2810 and 2811. Figure 3-5. External Interface Block Diagram 42 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 The operation and timing of the external interface, can be controlled by the registers listed in Table 3-10. Table 3-10. XINTF Configuration and Control Register Mappings ADDRESS SIZE (x16) XTIMING0 0x00 0B20 2 XINTF Timing Register, Zone 0 can access as two 16-bit registers or one 32-bit register. XTIMING1 0x00 0B22 2 XINTF Timing Register, Zone 1 can access as two 16-bit registers or one 32-bit register. XTIMING2 0x00 0B24 2 XINTF Timing Register, Zone 2 can access as two 16-bit registers or one 32-bit register. XTIMING6 0x00 0B2C 2 XINTF Timing Register, Zone 6 can access as two 16-bit registers or one 32-bit register. XTIMING7 0x00 0B2E 2 XINTF Timing Register, Zone 7 can access as two 16-bit registers or one 32-bit register. XINTCNF2 0x00 0B34 2 XINTF Configuration Register can access as two 16-bit registers or one 32-bit register. XBANK 0x00 0B38 1 XINTF Bank Control Register XREVISION 0x00 0B3A 1 XINTF Revision Register NAME 3.5.1 DESCRIPTION Timing Registers XINTF signal timing can be tuned to match specific external device requirements such as setup and hold times to strobe signals for contention avoidance and maximizing bus efficiency. The XINTF timing parameters can be configured individually for each zone based on the requirements of the memory or peripheral accessed by that particular zone. This allows the programmer to maximize the efficiency of the bus on a per-zone basis. All XINTF timing values are with respect to XTIMCLK, which is equal to or onehalf of the SYSCLKOUT rate, as shown in Figure 6-30. For detailed information on the XINTF timing and configuration register bit fields, see the TMS320x281x DSP External Interface (XINTF) Reference Guide (literature number SPRU067). 3.5.2 XREVISION Register The XREVISION register contains a unique number to identify the particular version of XINTF used in the product. For the 2812, this register will be configured as described in Table 3-11. Table 3-11. XREVISION Register Bit Definitions BIT(S) 15–0 NAME REVISION TYPE R RESET DESCRIPTION 0x0004 Current XINTF Revision. For internal use/reference. Test purposes only. Subject to change. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 43 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.6 www.ti.com Interrupts Figure 3-6 shows how the various interrupt sources are multiplexed within the F281x and C281x devices. Peripherals (SPI, SCI, McBSP, CAN, EV, ADC) (41 Interrupts) WDINT WAKEINT INT1 to INT12 96 Interrupts (A) LPMINT PIE Interrupt Control Watchdog Low-Power Modes XINT1 XINT1CR[15:0] XINT1CTR[15:0] Interrupt Control XINT2 XINT2CR[15:0] C28x CPU XINT2CTR[15:0] TINT0 TINT2 INT14 TIMER 0 TINT1 TIMER 1 MUX INT13 GPIO MUX TIMER 2 (Reserved for DSP/BIOS) select enable NMI Interrupt Control XNMI_XINT13 XNMICR[15:0] XNMICTR[15:0] A. Out of a possible 96 interrupts, 45 are currently used by peripherals. Figure 3-6. Interrupt Sources Eight PIE block interrupts are grouped into one CPU interrupt. In total, 12 CPU interrupt groups, with 8 interrupts per group equals 96 possible interrupts. On the F281x and C281x, 45 of these are used by peripherals as shown in Table 3-12. The TRAP #VectorNumber instruction transfers program control to the interrupt service routine corresponding to the vector specified. TRAP #0 attempts to transfer program control to the address pointed to by the reset vector. The PIE vector table does not, however, include a reset vector. Therefore, TRAP #0 should not be used when the PIE is enabled. Doing so will result in undefined behavior. When the PIE is enabled, TRAP #1 through TRAP #12 will transfer program control to the interrupt service routine corresponding to the first vector within the PIE group. For example: TRAP #1 fetches the vector from INT1.1, TRAP #2 fetches the vector from INT2.1 and so forth. 44 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 IFR[12:1] IER[12:1] INTM INT1 INT2 1 MUX INT11 INT12 (Flag) INTx Global Enable (Enable) INTx.1 INTx.2 INTx.3 INTx.4 INTx.5 INTx.6 INTx.7 INTx.8 MUX PIEACKx (Enable/Flag) CPU 0 (Enable) (Flag) PIEIERx[8:1] PIEIFRx[8:1] From Peripherals or External Interrupts Figure 3-7. Multiplexing of Interrupts Using the PIE Block Table 3-12. PIE Peripheral Interrupts (1) CPU INTERRUPTS (1) PIE INTERRUPTS INTx.8 INTx.7 INTx.6 INTx.5 INTx.4 INTx.3 INTx.2 INTx.1 INT1 WAKEINT (LPM/WD) TINT0 (TIMER 0) ADCINT (ADC) XINT2 XINT1 Reserved PDPINTB (EV-B) PDPINTA (EV-A) INT2 Reserved T1OFINT (EV-A) T1UFINT (EV-A) T1CINT (EV-A) T1PINT (EV-A) CMP3INT (EV-A) CMP2INT (EV-A) CMP1INT (EV-A) INT3 Reserved CAPINT3 (EV-A) CAPINT2 (EV-A) CAPINT1 (EV-A) T2OFINT (EV-A) T2UFINT (EV-A) T2CINT (EV-A) T2PINT (EV-A) INT4 Reserved T3OFINT (EV-B) T3UFINT (EV-B) T3CINT (EV-B) T3PINT (EV-B) CMP6INT (EV-B) CMP5INT (EV-B) CMP4INT (EV-B) INT5 Reserved CAPINT6 (EV-B) CAPINT5 (EV-B) CAPINT4 (EV-B) T4OFINT (EV-B) T4UFINT (EV-B) T4CINT (EV-B) T4PINT (EV-B) INT6 Reserved Reserved MXINT (McBSP) MRINT (McBSP) Reserved Reserved SPITXINTA (SPI) SPIRXINTA (SPI) INT7 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved INT8 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved INT9 Reserved Reserved ECAN1INT (CAN) ECAN0INT (CAN) SCITXINTB (SCI-B) SCIRXINTB (SCI-B) SCITXINTA (SCI-A) SCIRXINTA (SCI-A) INT10 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved INT11 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved INT12 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Out of the 96 possible interrupts, 45 interrupts are currently used. The remaining interrupts are reserved for future devices. These interrupts can be used as software interrupts if they are enabled at the PIEIFRx level, provided none of the interrupts within the group is being used by a peripheral. Otherwise, interrupts coming in from peripherals may be lost by accidentally clearing their flag while modifying the PIEIFR. To summarize, there are two safe cases when the reserved interrupts could be used as software interrupts: • No peripheral within the group is asserting interrupts. • No peripheral interrupts are assigned to the group (example PIE group 12). Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 45 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 3-13. PIE Configuration and Control Registers (1) NAME ADDRESS SIZE (x16) PIECTRL 0x0000 0CE0 1 PIE, Control Register PIEACK 0x0000 0CE1 1 PIE, Acknowledge Register PIEIER1 0x0000 0CE2 1 PIE, INT1 Group Enable Register PIEIFR1 0x0000 0CE3 1 PIE, INT1 Group Flag Register PIEIER2 0x0000 0CE4 1 PIE, INT2 Group Enable Register PIEIFR2 0x0000 0CE5 1 PIE, INT2 Group Flag Register PIEIER3 0x0000 0CE6 1 PIE, INT3 Group Enable Register PIEIFR3 0x0000 0CE7 1 PIE, INT3 Group Flag Register PIEIER4 0x0000 0CE8 1 PIE, INT4 Group Enable Register PIEIFR4 0x0000 0CE9 1 PIE, INT4 Group Flag Register PIEIER5 0x0000 0CEA 1 PIE, INT5 Group Enable Register PIEIFR5 0x0000 0CEB 1 PIE, INT5 Group Flag Register PIEIER6 0x0000 0CEC 1 PIE, INT6 Group Enable Register PIEIFR6 0x0000 0CED 1 PIE, INT6 Group Flag Register PIEIER7 0x0000 0CEE 1 PIE, INT7 Group Enable Register PIEIFR7 0x0000 0CEF 1 PIE, INT7 Group Flag Register PIEIER8 0x0000 0CF0 1 PIE, INT8 Group Enable Register PIEIFR8 0x0000 0CF1 1 PIE, INT8 Group Flag Register PIEIER9 0x0000 0CF2 1 PIE, INT9 Group Enable Register PIEIFR9 0x0000 0CF3 1 PIE, INT9 Group Flag Register PIEIER10 0x0000 0CF4 1 PIE, INT10 Group Enable Register PIEIFR10 0x0000 0CF5 1 PIE, INT10 Group Flag Register PIEIER11 0x0000 0CF6 1 PIE, INT11 Group Enable Register PIEIFR11 0x0000 0CF7 1 PIE, INT11 Group Flag Register PIEIER12 0x0000 0CF8 1 PIE, INT12 Group Enable Register PIEIFR12 0x0000 0CF9 1 PIE, INT12 Group Flag Register Reserved 0x0000 0CFA – 0x0000 0CFF 6 Reserved (1) 46 DESCRIPTION The PIE configuration and control registers are not protected by EALLOW mode. The PIE vector table is protected. Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 3.6.1 SPRS174T – APRIL 2001 – REVISED MAY 2012 External Interrupts Table 3-14. External Interrupts Registers NAME ADDRESS SIZE (x16) 0x00 7070 1 XINT1 control register XINT2CR 0x00 7071 1 XINT2 control register Reserved 0x00 7072 – 0x00 7076 5 XNMICR 0x00 7077 1 XNMI control register XINT1CTR 0x00 7078 1 XINT1 counter register XINT2CTR 0x00 7079 1 XINT2 counter register Reserved 0x00 707A – 0x00 707E 5 XNMICTR 0x00 707F 1 XINT1CR DESCRIPTION XNMI counter register Each external interrupt can be enabled/disabled or qualified using positive or negative going edge. For more information, see the TMS320x281x DSP System Control and Interrupts Reference Guide (literature number SPRU078). Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 47 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.7 www.ti.com System Control This section describes the F281x and C281x oscillator, PLL and clocking mechanisms, the watchdog function and the low-power modes. Figure 3-8 shows the various clock and reset domains in the F281x and C281x devices that will be discussed. Reset XRS Watchdog Block SYSCLKOUT Peripheral Reset CLKIN (A) X1/XCLKIN PLL C28x CPU OSC Power Modes Control System Control Registers Peripheral Bus I/O eCAN LSPCLK Low-Speed Prescaler Low-Speed Peripherals SCI-A/B, SPI, McBSP I/O GPIO MUX HSPCLK High-Speed Prescaler Peripheral Registers XF_XPLLDIS Clock Enables Peripheral Registers Peripheral Registers X2 High-Speed Peripherals EV-A/B GPIOs I/O HSPCLK ADC Registers A. 12-Bit ADC 16 ADC Inputs CLKIN is the clock input to the CPU. SYSCLKOUT is the output clock of the CPU. They are of the same frequency. Figure 3-8. Clock and Reset Domains 48 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 The PLL, clocking, watchdog and low-power modes, are controlled by the registers listed in Table 3-15. Table 3-15. PLL, Clocking, Watchdog, and Low-Power Mode Registers (1) NAME ADDRESS SIZE (x16) Reserved 0x00 7010 – 0x00 7017 8 Reserved 0x00 7018 1 Reserved 0x00 7019 1 HISPCP 0x00 701A 1 High-Speed Peripheral Clock Prescaler Register for HSPCLK clock LOSPCP 0x00 701B 1 Low-Speed Peripheral Clock Prescaler Register for LSPCLK clock PCLKCR 0x00 701C 1 Peripheral Clock Control Register Reserved 0x00 701D 1 LPMCR0 0x00 701E 1 Low-Power Mode Control Register 0 LPMCR1 0x00 701F 1 Low-Power Mode Control Register 1 Reserved 0x00 7020 1 PLLCR 0x00 7021 1 PLL Control Register (2) SCSR 0x00 7022 1 System Control and Status Register WDCNTR 0x00 7023 1 Watchdog Counter Register Reserved 0x00 7024 1 WDKEY 0x00 7025 1 0x00 7026 – 0x00 7028 3 0x00 7029 1 0x00 702A – 0x00 702F 6 Reserved WDCR Reserved (1) (2) DESCRIPTION Watchdog Reset Key Register Watchdog Control Register All of the above registers can only be accessed by executing the EALLOW instruction. The PLL control register (PLLCR) is reset to a known state by the XRS signal only. Emulation reset (through Code Composer Studio) will not reset PLLCR. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 49 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.8 www.ti.com OSC and PLL Block Figure 3-9 shows the OSC and PLL block on the F281x and C281x. XF_XPLLDIS XPLLDIS Latch XRS XCLKIN X1/XCLKIN OSCCLK (PLL Disabled) 0 CLKIN On-Chip Oscillator (OSC) PLL Bypass /2 CPU SYSCLKOUT 1 4-Bit PLL Select X2 PLL 4-Bit PLL Select PLL Block Figure 3-9. OSC and PLL Block The on-chip oscillator circuit enables a crystal to be attached to the F281x and C281x devices using the X1/XCLKIN and X2 pins. If a crystal is not used, then an external oscillator can be directly connected to the X1/XCLKIN pin and the X2 pin is left unconnected. The logic-high level in this case should not exceed VDD. The PLLCR bits [3:0] set the clocking ratio. 50 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 3-16. PLLCR Register Bit Definitions BIT(S) NAME TYPE XRS RESET (1) 15:4 Reserved R=0 0:0 DESCRIPTION SYSCLKOUT = (XCLKIN * n)/2, where n is the PLL multiplication factor. 3:0 (1) DIV R/W 0,0,0,0 Bit Value n SYSCLKOUT 0000 PLL Bypassed XCLKIN/2 0001 1 XCLKIN/2 0010 2 XCLKIN 0011 3 XCLKIN * 1.5 0100 4 XCLKIN * 2 0101 5 XCLKIN * 2.5 0110 6 XCLKIN * 3 0111 7 XCLKIN * 3.5 1000 8 XCLKIN * 4 1001 9 XCLKIN * 4.5 1010 10 XCLKIN * 5 1011 11 Reserved 1100 12 Reserved 1101 13 Reserved 1110 14 Reserved 1111 15 Reserved The PLLCR register is reset to a known state by the XRS reset line. If a reset is issued by the debugger, the PLL clocking ratio is not changed. 3.8.1 Loss of Input Clock In PLL enabled mode, if the input clock XCLKIN or the oscillator clock is removed or absent, the PLL will still issue a “limp-mode” clock. The limp-mode clock will continue to clock the CPU and peripherals at a typical frequency of 1–4 MHz. The PLLCR register should have been written to with a non-zero value for this feature to work. Normally, when the input clocks are present, the watchdog counter will decrement to initiate a watchdog reset or WDINT interrupt. However, when the external input clock fails, the watchdog counter will stop decrementing (that is, the watchdog counter does not change with the limp-mode clock). This condition could be used by the application firmware to detect the input clock failure and initiate necessary shut-down procedure for the system. NOTE Applications in which the correct CPU operating frequency is absolutely critical must implement a mechanism by which the DSP will be held in reset, should the input clocks ever fail. For example, an R-C circuit may be used to trigger the XRS pin of the DSP, should the capacitor ever get fully charged. An I/O pin may be used to discharge the capacitor on a periodic basis to prevent it from getting fully charged. Such a circuit would also help in detecting failure of the VDD3VFL rail. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 51 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 3.9 www.ti.com PLL-Based Clock Module The F281x and C281x have an on-chip, PLL-based clock module. This module provides all the necessary clocking signals for the device, as well as control for low-power mode entry. The PLL has a 4-bit ratio control to select different CPU clock rates. The watchdog module should be disabled before writing to the PLLCR register. It can be re-enabled (if need be) after the PLL module has stabilized, which takes 131072 XCLKIN cycles. The PLL-based clock module provides two modes of operation: • Crystal operation: This mode allows the use of an external crystal/resonator to provide the time base to the device. • External clock source operation: This mode allows the internal oscillator to be bypassed. The device clocks are generated from an external clock source input on the X1/XCLKIN pin. X1/XCLKIN X2 (A) (A) CL1 CL2 Crystal (a) A. X1/XCLKIN X2 External Clock Signal (Toggling 0-VDD) NC (b) TI recommends that customers have the resonator/crystal vendor characterize the operation of their device with the DSP chip. The resonator/crystal vendor has the equipment and expertise to tune the tank circuit. The vendor can also advise the customer regarding the proper tank component values that will ensure start-up and stability over the entire operating range. Figure 3-10. Recommended Crystal/Clock Connection Table 3-17. Possible PLL Configuration Modes PLL MODE REMARKS SYSCLKOUT PLL Disabled Invoked by tying XPLLDIS pin low upon reset. PLL block is completely disabled. Clock input to the CPU (CLKIN) is directly derived from the clock signal present at the X1/XCLKIN pin. XCLKIN PLL Bypassed Default PLL configuration upon power-up, if PLL is not disabled. The PLL itself is bypassed. However, the /2 module in the PLL block divides the clock input at the X1/XCLKIN pin by two before feeding it to the CPU. PLL Enabled Achieved by writing a non-zero value “n” into PLLCR register. The /2 module in the PLL block now divides the output of the PLL by two before feeding it to the CPU. XCLKIN/2 (XCLKIN * n) / 2 3.10 External Reference Oscillator Clock Option The typical specifications for the external quartz crystal for a frequency of 30 MHz are listed below: • Fundamental mode, parallel resonant • CL (load capacitance) = 12 pF • CL1 = CL2 = 24 pF • Cshunt = 6 pF • ESR range = 25 to 40 Ω 52 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 3.11 Watchdog Block The watchdog block on the F281x and C281x is identical to the one used on the 240x devices. The watchdog module generates an output pulse, 512 oscillator clocks wide (OSCCLK), whenever the 8-bit watchdog up counter has reached its maximum value. To prevent this, the user disables the counter or the software must periodically write a 0x55 + 0xAA sequence into the watchdog key register which will reset the watchdog counter. Figure 3-11 shows the various functional blocks within the watchdog module. WDCR (WDPS[2:0]) WDCR (WDDIS) WDCNTR[7:0] OSCCLK Watchdog Prescaler /512 WDCLK 8-Bit Watchdog Counter CLR Clear Counter Internal Pullup WDKEY[7:0] Generate Output Pulse (512 OSCCLKs) Bad Key Watchdog 55 + AA Key Detector Good Key WDRST WDINT XRS Core-reset Bad WDCHK Key SCSR (WDENINT) WDCR (WDCHK[2:0]) (A) WDRST A. 1 0 1 The WDRST signal is driven low for 512 OSCCLK cycles. Figure 3-11. Watchdog Module The WDINT signal enables the watchdog to be used as a wakeup from IDLE/STANDBY mode timer. In STANDBY mode, all peripherals are turned off on the device. The only peripheral that remains functional is the watchdog. The WATCHDOG module will run off the PLL clock or the oscillator clock. The WDINT signal is fed to the LPM block so that it can wake the device from STANDBY (if enabled). See Section 3.12, Low-Power Modes Block, for more details. In IDLE mode, the WDINT signal can generate an interrupt to the CPU, via the PIE, to take the CPU out of IDLE mode. In HALT mode, this feature cannot be used because the oscillator (and PLL) are turned off and hence, so is the WATCHDOG. Functional Overview Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 53 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com 3.12 Low-Power Modes Block The low-power modes on the F281x and C281x are similar to the 240x devices. Table 3-18 summarizes the various modes. Table 3-18. F281x and C281x Low-Power Modes LPM[1:0] OSCCLK CLKIN SYSCLKOUT Normal X,X on on on – on (2) XRS, WDINT, Any Enabled Interrupt, XNMI, Debugger (3) IDLE (1) (2) (3) EXIT (1) MODE 0,0 on on STANDBY 0,1 on (watchdog still running) off off XRS, WDINT, XINT1, XNMI, T1/2/3/4CTRIP, C1/2/3/4/5/6TRIP, SCIRXDA, SCIRXDB, CANRX, Debugger (3) HALT 1,X off (oscillator and PLL turned off, watchdog not functional) off off XRS, XNMI, Debugger (3) The Exit column lists which signals or under what conditions the low-power mode will be exited. A low signal, on any of the signals, will exit the low-power condition. This signal must be kept low long enough for an interrupt to be recognized by the device. Otherwise, the IDLE mode will not be exited and the device will go back into the indicated low-power mode. The IDLE mode on the C28x behaves differently than on the 24x/240x. On the C28x, the clock output from the core (SYSCLKOUT) is still functional; while on the 24x/240x, the clock is turned off. On the C28x, the JTAG port can still function even if the core clock (CLKIN) is turned off. The various low-power modes operate as follows: IDLE Mode This mode is exited by any enabled interrupt or an XNMI that is recognized by the processor. The LPM block performs no tasks during this mode as long as the LPMCR0(LPM) bits are set to 0,0. STANDBY Mode All other signals (including XNMI) will wake the device from STANDBY mode if selected by the LPMCR1 register. The user will need to select which signal(s) will wake the device. The selected signal(s) are also qualified by the OSCCLK before waking the device. The number of OSCCLKs is specified in the LPMCR0 register. HALT Mode Only the XRS and XNMI external signals can wake the device from HALT mode. The XNMI input to the core has an enable/disable bit. Hence, it is safe to use the XNMI signal for this function. NOTE The low-power modes do not affect the state of the output pins (PWM pins included). They will be in whatever state the code left them when the IDLE instruction was executed. 54 Functional Overview Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4 SPRS174T – APRIL 2001 – REVISED MAY 2012 Peripherals The integrated peripherals of the F281x and C281x are described in the following subsections: • Three 32-bit CPU-Timers • Two event-manager modules (EVA, EVB) • Enhanced analog-to-digital converter (ADC) module • Enhanced controller area network (eCAN) module • Multichannel buffered serial port (McBSP) module • Serial communications interface modules (SCI-A, SCI-B) • Serial peripheral interface (SPI) module • Digital I/O and shared pin functions 4.1 32-Bit CPU-Timers 0/1/2 There are three 32-bit CPU-timers on the F281x and C281x devices (CPU-TIMER0/1/2). Timer 2 is reserved for DSP/BIOS. CPU-Timer 0 and CPU-Timer 1 can be used in user applications. These timers are different from the general-purpose (GP) timers that are present in the Event Manager modules (EVA, EVB). NOTE If the application is not using DSP/BIOS, then CPU-Timer 2 can be used in the application. Reset Timer Reload 16-Bit Timer Divide-Down TDDRH:TDDR SYSCLKOUT TCR.4 (Timer Start Status) 32-Bit Timer Period PRDH:PRD 16-Bit Prescale Counter PSCH:PSC Borrow 32-Bit Counter TIMH:TIM Borrow TINT Figure 4-1. CPU-Timers Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 55 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com In the F281x and C281x devices, the timer interrupt signals (TINT0, TINT1, TINT2) are connected as shown in Figure 4-2. INT1 to INT12 PIE TINT0 CPU-TIMER 0 C28x CPU TINT1 INT13 CPU-TIMER 1 XINT13 INT14 A. B. CPU-TIMER 2 (Reserved for DSP/BIOS) TINT2 The timer registers are connected to the memory bus of the C28x processor. The timing of the timers is synchronized to SYSCLKOUT of the processor clock. Figure 4-2. CPU-Timer Interrupts Signals and Output Signal The general operation of the timer is as follows: The 32-bit counter register “TIMH:TIM” is loaded with the value in the period register “PRDH:PRD”. The counter register decrements at the SYSCLKOUT rate of the C28x. When the counter reaches 0, a timer interrupt output signal generates an interrupt pulse. The registers listed in Table 4-1 are used to configure the timers. For more information, see the TMS320x281x DSP System Control and Interrupts Reference Guide (literature number SPRU078). 56 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 4-1. CPU-Timers 0, 1, 2 Configuration and Control Registers NAME ADDRESS SIZE (x16) TIMER0TIM 0x00 0C00 1 CPU-Timer 0, Counter Register TIMER0TIMH 0x00 0C01 1 CPU-Timer 0, Counter Register High TIMER0PRD 0x00 0C02 1 CPU-Timer 0, Period Register TIMER0PRDH 0x00 0C03 1 CPU-Timer 0, Period Register High TIMER0TCR 0x00 0C04 1 CPU-Timer 0, Control Register Reserved 0x00 0C05 1 TIMER0TPR 0x00 0C06 1 CPU-Timer 0, Prescale Register TIMER0TPRH 0x00 0C07 1 CPU-Timer 0, Prescale Register High TIMER1TIM 0x00 0C08 1 CPU-Timer 1, Counter Register TIMER1TIMH 0x00 0C09 1 CPU-Timer 1, Counter Register High TIMER1PRD 0x00 0C0A 1 CPU-Timer 1, Period Register TIMER1PRDH 0x00 0C0B 1 CPU-Timer 1, Period Register High TIMER1TCR 0x00 0C0C 1 CPU-Timer 1, Control Register Reserved 0x00 0C0D 1 TIMER1TPR 0x00 0C0E 1 CPU-Timer 1, Prescale Register TIMER1TPRH 0x00 0C0F 1 CPU-Timer 1, Prescale Register High TIMER2TIM 0x00 0C10 1 CPU-Timer 2, Counter Register TIMER2TIMH 0x00 0C11 1 CPU-Timer 2, Counter Register High TIMER2PRD 0x00 0C12 1 CPU-Timer 2, Period Register TIMER2PRDH 0x00 0C13 1 CPU-Timer 2, Period Register High TIMER2TCR 0x00 0C14 1 CPU-Timer 2, Control Register Reserved 0x00 0C15 1 TIMER2TPR 0x00 0C16 1 CPU-Timer 2, Prescale Register TIMER2TPRH 0x00 0C17 1 CPU-Timer 2, Prescale Register High 0x00 0C18 – 0x00 0C3F 40 Reserved DESCRIPTION Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 57 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 4.2 www.ti.com Event Manager Modules (EVA, EVB) The event-manager modules include general-purpose (GP) timers, full-compare/PWM units, capture units, and quadrature-encoder pulse (QEP) circuits. EVA and EVB timers, compare units, and capture units function identically. However, timer/unit names differ for EVA and EVB. Table 4-2 shows the module and signal names used. Table 4-2 shows the features and functionality available for the event-manager modules and highlights EVA nomenclature. Event managers A and B have identical peripheral register sets with EVA starting at 7400h and EVB starting at 7500h. The paragraphs in this section describe the function of GP timers, compare units, capture units, and QEPs using EVA nomenclature. These paragraphs are applicable to EVB with regard to function—however, module/signal names would differ. Table 4-3 lists the EVA registers. For more information, see the TMS320x281x DSP Event Manager (EV) Reference Guide (literature number SPRU065). Table 4-2. Module and Signal Names for EVA and EVB EVENT MANAGER MODULES EVA EVB MODULE SIGNAL MODULE SIGNAL GP Timers GP Timer 1 GP Timer 2 T1PWM/T1CMP T2PWM/T2CMP GP Timer 3 GP Timer 4 T3PWM/T3CMP T4PWM/T4CMP Compare Units Compare 1 Compare 2 Compare 3 PWM1/2 PWM3/4 PWM5/6 Compare 4 Compare 5 Compare 6 PWM7/8 PWM9/10 PWM11/12 Capture Units Capture 1 Capture 2 Capture 3 CAP1 CAP2 CAP3 Capture 4 Capture 5 Capture 6 CAP4 CAP5 CAP6 QEP Channels QEP1 QEP2 QEPI1 QEP1 QEP2 QEP3 QEP4 QEPI2 QEP3 QEP4 Direction External Clock TDIRA TCLKINA Direction External Clock TDIRB TCLKINB Compare C1TRIP C2TRIP C3TRIP Compare C4TRIP C5TRIP C6TRIP External Clock Inputs External Trip Inputs External Trip Inputs (1) 58 T1CTRIP_PDPINTA (1) T2CTRIP/EVASOC T3CTRIP_PDPINTB (1) T4CTRIP/EVBSOC In the 24x/240x-compatible mode, the T1CTRIP_PDPINTA pin functions as PDPINTA and the T3CTRIP_PDPINTB pin functions as PDPINTB. Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 4-3. EVA Registers (1) NAME ADDRESS SIZE (x16) GPTCONA 0x00 7400 1 GP Timer Control Register A T1CNT 0x00 7401 1 GP Timer 1 Counter Register T1CMPR 0x00 7402 1 GP Timer 1 Compare Register T1PR 0x00 7403 1 GP Timer 1 Period Register T1CON 0x00 7404 1 GP Timer 1 Control Register T2CNT 0x00 7405 1 GP Timer 2 Counter Register T2CMPR 0x00 7406 1 GP Timer 2 Compare Register T2PR 0x00 7407 1 GP Timer 2 Period Register T2CON 0x00 7408 1 GP Timer 2 Control Register EXTCONA (2) 0x00 7409 1 GP Extension Control Register A COMCONA 0x00 7411 1 Compare Control Register A ACTRA 0x00 7413 1 Compare Action Control Register A DBTCONA 0x00 7415 1 Dead-Band Timer Control Register A CMPR1 0x00 7417 1 Compare Register 1 CMPR2 0x00 7418 1 Compare Register 2 CMPR3 0x00 7419 1 Compare Register 3 CAPCONA 0x00 7420 1 Capture Control Register A CAPFIFOA 0x00 7422 1 Capture FIFO Status Register A CAP1FIFO 0x00 7423 1 Two-Level-Deep Capture FIFO Stack 1 CAP2FIFO 0x00 7424 1 Two-Level-Deep Capture FIFO Stack 2 CAP3FIFO 0x00 7425 1 Two-Level-Deep Capture FIFO Stack 3 CAP1FBOT 0x00 7427 1 Bottom Register of Capture FIFO Stack 1 CAP2FBOT 0x00 7428 1 Bottom Register of Capture FIFO Stack 2 CAP3FBOT 0x00 7429 1 Bottom Register of Capture FIFO Stack 3 EVAIMRA 0x00 742C 1 Interrupt Mask Register A EVAIMRB 0x00 742D 1 Interrupt Mask Register B EVAIMRC 0x00 742E 1 Interrupt Mask Register C EVAIFRA 0x00 742F 1 Interrupt Flag Register A EVAIFRB 0x00 7430 1 Interrupt Flag Register B EVAIFRC 0x00 7431 1 Interrupt Flag Register C (1) (2) DESCRIPTION The EV-B register set is identical except the address range is from 0x00 7500 to 0x00 753F. The above registers are mapped to Zone 2. This space allows only 16-bit accesses. 32-bit accesses produce undefined results. New register compared to 24x/240x Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 59 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com GPTCONA[12:4], CAPCONA[8], EXTCONA[0] EVAENCLK EVATO ADC (Internal) T1CTRIP/PDPINTA, T2CTRIP, C1TRIP, C2TRIP, C3TRIP Control Logic EVASOC ADC (External) Output Logic Timer 1 Compare T1PWM_T1CMP 16 T1CON[5,4] GPTCONA[1,0] T1CON[1] TCLKINA clock GP Timer 1 HSPCLK Prescaler dir T1CON[10:8] 16 TDIRA T1CON[15:11,6,3,2] PWM1 PWM2 PWM3 Full Compare 1 SVPWM State Machine Peripheral Bus Full Compare 2 Dead-Band Logic Output Logic PWM4 PWM5 PWM6 Full Compare 3 COMCONA[15:5,2:0] ACTRA[15:12], COMCONA[12], T1CON[13:11] DBTCONA[15:0] ACTRA[11:0] Output Logic Timer 2 Compare T2PWM_T2CMP 16 T2CON[5,4] T2CON[1] GPTCONA[3,2] TCLKINA GP Timer 2 clock dir reset HSPCLK Prescaler QEPCLK 16 T2CON[10:8] T2CON[15:11,7,6,3,2,0] CAPCONA[10,9] QEPDIR QEP Logic 16 TDIRA CAP1_QEP1 CAP2_QEP2 Capture Units CAP3_QEPI1 Index Qual CAPCONA[15:12,7:0] EXTCONA[1:2] A. The EVB module is similar to the EVA module. Figure 4-3. Event Manager A Functional Block Diagram 60 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.2.1 SPRS174T – APRIL 2001 – REVISED MAY 2012 General-Purpose (GP) Timers There are two GP timers. The GP timer x (x = 1 or 2 for EVA; x = 3 or 4 for EVB) includes: • A 16-bit timer, up-/down-counter, TxCNT, for reads or writes • A 16-bit timer-compare register, TxCMPR (double-buffered with shadow register), for reads or writes • A 16-bit timer-period register, TxPR (double-buffered with shadow register), for reads or writes • A 16-bit timer-control register, TxCON, for reads or writes • Selectable internal or external input clocks • A programmable prescaler for internal or external clock inputs • Control and interrupt logic, for four maskable interrupts: underflow, overflow, timer compare, and period interrupts • A selectable direction input pin (TDIRx) (to count up or down when directional up-/down-count mode is selected) The GP timers can be operated independently or synchronized with each other. The compare register associated with each GP timer can be used for compare function and PWM-waveform generation. There are three continuous modes of operations for each GP timer in up- or up/down-counting operations. Internal or external input clocks with programmable prescaler are used for each GP timer. GP timers also provide the time base for the other event-manager submodules: GP timer 1 for all the compares and PWM circuits, GP timer 2/1 for the capture units and the quadrature-pulse counting operations. Double-buffering of the period and compare registers allows programmable change of the timer (PWM) period and the compare/PWM pulse width as needed. 4.2.2 Full-Compare Units There are three full-compare units on each event manager. These compare units use GP timer1 as the time base and generate six outputs for compare and PWM-waveform generation using programmable deadband circuit. The state of each of the six outputs is configured independently. The compare registers of the compare units are double-buffered, allowing programmable change of the compare/PWM pulse widths as needed. 4.2.3 Programmable Deadband Generator Deadband generation can be enabled/disabled for each compare unit output individually. The deadbandgenerator circuit produces two outputs (with or without deadband zone) for each compare unit output signal. The output states of the deadband generator are configurable and changeable as needed by way of the double-buffered ACTRx register. 4.2.4 PWM Waveform Generation Up to eight PWM waveforms (outputs) can be generated simultaneously by each event manager: three independent pairs (six outputs) by the three full-compare units with programmable deadbands, and two independent PWMs by the GP-timer compares. 4.2.5 Double Update PWM Mode The F281x and C281x Event Manager supports “Double Update PWM Mode.” This mode refers to a PWM operation mode in which the position of the leading edge and the position of the trailing edge of a PWM pulse are independently modifiable in each PWM period. To support this mode, the compare register that determines the position of the edges of a PWM pulse must allow (buffered) compare value update once at the beginning of a PWM period and another time in the middle of a PWM period. The compare registers in F281x and C281x Event Managers are all buffered and support three compare value reload/update (value in buffer becoming active) modes. These modes have earlier been documented as compare value reload conditions. The reload condition that supports double update PWM mode is reloaded on Underflow (beginning of PWM period) OR Period (middle of PWM period). Double update PWM mode can be achieved by using this condition for compare value reload. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 61 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 4.2.6 www.ti.com PWM Characteristics Characteristics of the PWMs are as follows: • 16-bit registers • Wide range of programmable deadband for the PWM output pairs • Change of the PWM carrier frequency for PWM frequency wobbling as needed • Change of the PWM pulse widths within and after each PWM period as needed • External-maskable power and drive-protection interrupts • Pulse-pattern-generator circuit, for programmable generation of asymmetric, symmetric, and fourspace vector PWM waveforms • Minimized CPU overhead using auto-reload of the compare and period registers • The PWM pins are driven to a high-impedance state when the PDPINTx pin is driven low and after PDPINTx signal qualification. The PDPINTx pin (after qualification) is reflected in bit 8 of the COMCONx register. – PDPINTA pin status is reflected in bit 8 of COMCONA register. – PDPINTB pin status is reflected in bit 8 of COMCONB register. • EXTCON register bits provide options to individually trip control for each PWM pair of signals 4.2.7 Capture Unit The capture unit provides a logging function for different events or transitions. The values of the selected GP timer counter is captured and stored in the two-level-deep FIFO stacks when selected transitions are detected on capture input pins, CAPx (x = 1, 2, or 3 for EVA; and x = 4, 5, or 6 for EVB). The capture unit consists of three capture circuits. Capture units include the following features: • One 16-bit capture control register, CAPCONx (R/W) • One 16-bit capture FIFO status register, CAPFIFOx • Selection of GP timer 1/2 (for EVA) or 3/4 (for EVB) as the time base • Three 16-bit 2-level-deep FIFO stacks, one for each capture unit • Three capture input pins (CAP1/2/3 for EVA, CAP4/5/6 for EVB)—one input pin per capture unit. [All inputs are synchronized with the device (CPU) clock. In order for a transition to be captured, the input must hold at its current level to meet the input qualification circuitry requirements. The input pins CAP1/2 and CAP4/5 can also be used as QEP inputs to the QEP circuit.] • User-specified transition (rising edge, falling edge, or both edges) detection • Three maskable interrupt flags, one for each capture unit • The capture pins can also be used as general-purpose interrupt pins, if they are not used for the capture function. 4.2.8 Quadrature-Encoder Pulse (QEP) Circuit Two capture inputs (CAP1 and CAP2 for EVA; CAP4 and CAP5 for EVB) can be used to interface the onchip QEP circuit with a quadrature encoder pulse. Full synchronization of these inputs is performed onchip. Direction or leading-quadrature pulse sequence is detected, and GP timer 2/4 is incremented or decremented by the rising and falling edges of the two input signals (four times the frequency of either input pulse). With EXTCONA register bits, the EVA QEP circuit can use CAP3 as a capture index pin as well. Similarly, with EXTCONB register bits, the EVB QEP circuit can use CAP6 as a capture index pin. 4.2.9 External ADC Start-of-Conversion EVA/EVB start-of-conversion (SOC) can be sent to an external pin (EVASOC/EVBSOC) for external ADC interface. EVASOC and EVBSOC are MUXed with T2CTRIP and T4CTRIP, respectively. 62 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.3 SPRS174T – APRIL 2001 – REVISED MAY 2012 Enhanced Analog-to-Digital Converter (ADC) Module A simplified functional block diagram of the ADC module is shown in Figure 4-4. The ADC module consists of a 12-bit ADC with a built-in sample-and-hold (S/H) circuit. Functions of the ADC module include: • 12-bit ADC core with built-in S/H • Analog input: 0.0 V to 3.0 V (voltages above 3.0 V produce full-scale conversion results) • Fast conversion rate: 80 ns at 25-MHz ADC clock, 12.5 MSPS • 16-channel, MUXed inputs • Autosequencing capability provides up to 16 “autoconversions” in a single session. Each conversion can be programmed to select any 1 of 16 input channels • Sequencer can be operated as two independent 8-state sequencers or as one large 16-state sequencer (that is, two cascaded 8-state sequencers) • Sixteen result registers (individually addressable) to store conversion values – The digital value of the input analog voltage is derived by: Digital Value = 0, Digital Value = 4096 ´ when input £ 0 V Input Analog Voltage - ADCLO 3 Digital Value = 4095, • • • • • when 0 V < input < 3 V when input ³ 3 V Multiple triggers as sources for the start-of-conversion (SOC) sequence – S/W – software immediate start – EVA – Event manager A (multiple event sources within EVA) – EVB – Event manager B (multiple event sources within EVB) Flexible interrupt control allows interrupt request on every end-of-sequence (EOS) or every other EOS Sequencer can operate in “start/stop” mode, allowing multiple “time-sequenced triggers” to synchronize conversions EVA and EVB triggers can operate independently in dual-sequencer mode Sample-and-hold (S/H) acquisition time window has separate prescale control The ADC module in the F281x and C281x has been enhanced to provide flexible interface to event managers A and B. The ADC interface is built around a fast, 12-bit ADC module with a fast conversion rate of 80 ns at 25-MHz ADC clock. The ADC module has 16 channels, configurable as two independent 8-channel modules to service event managers A and B. The two independent 8-channel modules can be cascaded to form a 16-channel module. Although there are multiple input channels and two sequencers, there is only one converter in the ADC module. Figure 4-4 shows the block diagram of the F281x and C281x ADC module. The two 8-channel modules have the capability to autosequence a series of conversions, each module has the choice of selecting any one of the respective eight channels available through an analog MUX. In the cascaded mode, the autosequencer functions as a single 16-channel sequencer. On each sequencer, once the conversion is complete, the selected channel value is stored in its respective RESULT register. Autosequencing allows the system to convert the same channel multiple times, allowing the user to perform oversampling algorithms. This gives increased resolution over traditional single-sampled conversion results. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 63 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com System Control Block SYSCLKOUT High-Speed Prescaler C28x HSPCLK ADCENCLK Analog MUX Result Registers Result Reg 0 ADCINA0 70A8h Result Reg 1 S/H ADCINA7 12-Bit ADC Module Result Reg 7 70AFh Result Reg 8 70B0h Result Reg 15 70B7h ADCINB0 S/H ADCINB7 ADC Control Registers S/W EVA SOC Sequencer 1 Sequencer 2 SOC S/W EVB ADCSOC Figure 4-4. Block Diagram of the F281x and C281x ADC Module To obtain the specified accuracy of the ADC, proper board layout is critical. To the best extent possible, traces leading to the ADCIN pins should not run in close proximity to the digital signal paths. This is to minimize switching noise on the digital lines from getting coupled to the ADC inputs. Furthermore, proper isolation techniques must be used to isolate the ADC module power pins (VDDA1/VDDA2, AVDDREFBG) from the digital supply. For better accuracy and ESD protection, unused ADC inputs should be connected to analog ground. Notes: 1. The ADC registers are accessed at the SYSCLKOUT rate. The internal timing of the ADC module is controlled by the high-speed peripheral clock (HSPCLK). 2. The behavior of the ADC module based on the state of the ADCENCLK and HALT signals is as follows: ADCENCLK: On reset, this signal will be low. While reset is active-low (XRS) the clock to the register will still function. This is necessary to make sure all registers and modes go into their default reset state. The analog module will, however, be in a low-power inactive state. As soon as reset goes high, then the clock to the registers will be disabled. When the user sets the ADCENCLK signal high, then the clocks to the registers will be enabled and the analog module will be enabled. There will be a certain time delay (ms range) before the ADC is stable and can be used. HALT: This signal only affects the analog module. It does not affect the registers. If low, the ADC module is powered. If high, the ADC module goes into low-power mode. The HALT mode will stop the clock to the CPU, which will stop the HSPCLK. Therefore the ADC register logic will be turned off indirectly. 64 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Figure 4-5 shows the ADC pin-biasing for internal reference and Figure 4-6 shows the ADC pin-biasing for external reference. ADC 16-Channel Analog Inputs Test Pin ADCINA[7:0] ADCINB[7:0] ADCLO ADCBGREFIN ADCRESEXT ADC Reference Positive Output ADCREFP ADC Reference Medium Output ADCREFM ADC Reference Power ADC Analog I/O Power 24.9 k /20 k (B) (C) 10 μF (C) 10 μF ADCREFP and ADCREFM should not be loaded by external circuitry VDDA1 Analog 3.3 V VDDA2 Analog 3.3 V VSSA1 VSSA2 Analog 3.3 V AVDDREFBG AVSSREFBG VDDAIO Analog 3.3 V VSSAIO VDD1 ADC Digital Power VSS1 A. B. C. D. E. Connect to Analog Ground (A) ADC External Current Bias Resistor ADC Analog Power Analog input 0-3 V with respect to ADCLO Analog Ground 1.8 V can use the same 1.8-V (or 1.9-V) supply as the digital core but separate the two with a ferrite bead or a filter Digital Ground Provide access to this pin in PCB layouts. Intended for test purposes only. Use 24.9 kΩ for ADC clock range 1–18.75 MHz; use 20 kΩ for ADC clock range 18.75–25 MHz. TAIYO YUDEN EMK325F106ZH, EMK325BJ106MD, or equivalent ceramic capacitor External decoupling capacitors are recommended on all power pins. Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance. Figure 4-5. ADC Pin Connections With Internal Reference NOTE The temperature rating of any recommended component must match the rating of the end product. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 65 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Test Pin ADCINA[7:0] ADCINB[7:0] ADCLO ADCBGREFIN ADC External Current Bias Resistor ADCRESEXT ADC Reference Positive Input ADCREFP 2V ADC Reference Medium Input ADCREFM 1V ADC 16-Channel Analog Inputs Analog Input 0-3 V With Respect to ADCLO Connect to Analog Ground 24.9 k /20 k (C) 1 μF - 10 μF 1 μF - 10 μF ADC Analog Power VDDA1 VDDA2 VSSA1 VSSA2 Analog 3.3 V Analog 3.3 V ADC Reference Power AVDDREFBG AVSSREFBG Analog 3.3 V ADC Analog I/O Power VDDAIO VSSAIO Analog 3.3 V Analog Ground VDD1 VSS1 1.8 V can use the same 1.8-V (or 1.9-V) Digital Ground supply as the digital core but separate the two with a ferrite bead or a filter External decoupling capacitors are recommended on all power pins. Analog inputs must be driven from an operational amplifier that does not degrade the ADC performance. Use 24.9 kΩ for ADC clock range 1–18.75 MHz; use 20 kΩ for ADC clock range 18.75–25 MHz. It is recommended that buffered external references be provided with a voltage difference of (ADCREFP – ADCREFM) = 1 V ± 0.1% or better. External reference is enabled using bit 8 in the ADCTRL3 Register at ADC power up. In this mode, the accuracy of external reference is critical for overall gain. The voltage ADCREFP – ADCREFM will determine the overall accuracy. Do not enable internal references when external references are connected to ADCREFP and ADCREFM. See the TMS320x281x DSP Analog-to-Digital Converter (ADC) Reference Guide (literature number SPRU060) for more information. ADC Digital Power A. B. C. D. (D) Figure 4-6. ADC Pin Connections With External Reference 66 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 The ADC operation is configured, controlled, and monitored by the registers listed in Table 4-4. Table 4-4. ADC Registers (1) NAME ADDRESS SIZE (x16) ADCTRL1 0x00 7100 1 ADC Control Register 1 ADCTRL2 0x00 7101 1 ADC Control Register 2 ADCMAXCONV 0x00 7102 1 ADC Maximum Conversion Channels Register ADCCHSELSEQ1 0x00 7103 1 ADC Channel Select Sequencing Control Register 1 ADCCHSELSEQ2 0x00 7104 1 ADC Channel Select Sequencing Control Register 2 ADCCHSELSEQ3 0x00 7105 1 ADC Channel Select Sequencing Control Register 3 ADCCHSELSEQ4 0x00 7106 1 ADC Channel Select Sequencing Control Register 4 ADCASEQSR 0x00 7107 1 ADC Auto-Sequence Status Register ADCRESULT0 0x00 7108 1 ADC Conversion Result Buffer Register 0 ADCRESULT1 0x00 7109 1 ADC Conversion Result Buffer Register 1 ADCRESULT2 0x00 710A 1 ADC Conversion Result Buffer Register 2 ADCRESULT3 0x00 710B 1 ADC Conversion Result Buffer Register 3 ADCRESULT4 0x00 710C 1 ADC Conversion Result Buffer Register 4 ADCRESULT5 0x00 710D 1 ADC Conversion Result Buffer Register 5 ADCRESULT6 0x00 710E 1 ADC Conversion Result Buffer Register 6 ADCRESULT7 0x00 710F 1 ADC Conversion Result Buffer Register 7 ADCRESULT8 0x00 7110 1 ADC Conversion Result Buffer Register 8 ADCRESULT9 0x00 7111 1 ADC Conversion Result Buffer Register 9 ADCRESULT10 0x00 7112 1 ADC Conversion Result Buffer Register 10 ADCRESULT11 0x00 7113 1 ADC Conversion Result Buffer Register 11 ADCRESULT12 0x00 7114 1 ADC Conversion Result Buffer Register 12 ADCRESULT13 0x00 7115 1 ADC Conversion Result Buffer Register 13 ADCRESULT14 0x00 7116 1 ADC Conversion Result Buffer Register 14 ADCRESULT15 0x00 7117 1 ADC Conversion Result Buffer Register 15 ADCTRL3 0x00 7118 1 ADC Control Register 3 ADCST 0x00 7119 1 ADC Status Register 0x00 711C – 0x00 711F 4 Reserved (1) DESCRIPTION The above registers are Peripheral Frame 2 Registers. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 67 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 4.4 www.ti.com Enhanced Controller Area Network (eCAN) Module The CAN module has the following features: • Fully compliant with CAN protocol, version 2.0B • Supports data rates up to 1 Mbps • Thirty-two mailboxes, each with the following properties: – Configurable as receive or transmit – Configurable with standard or extended identifier – Has a programmable receive mask – Supports data and remote frame – Composed of 0 to 8 bytes of data – Uses a 32-bit time stamp on receive and transmit message – Protects against reception of new message – Holds the dynamically programmable priority of transmit message – Employs a programmable interrupt scheme with two interrupt levels – Employs a programmable alarm on transmission or reception time-out • Low-power mode • Programmable wake-up on bus activity • Automatic reply to a remote request message • Automatic retransmission of a frame in case of loss of arbitration or error • 32-bit local network time counter synchronized by a specific message (communication in conjunction with mailbox 16) • Self-test mode – Operates in a loopback mode receiving its own message. A “dummy” acknowledge is provided, thereby eliminating the need for another node to provide the acknowledge bit. NOTE: For a SYSCLKOUT of 150 MHz, the smallest bit rate possible is 23.4 kbps. The 28x CAN has passed the conformance test per ISO/DIS 16845. Contact TI for details. 68 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 eCAN0INT eCAN1INT Controls Address Data Enhanced CAN Controller 32 Message Controller Mailbox RAM (512 Bytes) 32-Message Mailbox of 4 x 32-Bit Words Memory Management Unit 32 CPU Interface, Receive Control Unit, Timer Management Unit 32 eCAN Memory (512 Bytes) Registers and Message Objects Control 32 eCAN Protocol Kernel Receive Buffer Transmit Buffer Control Buffer Status Buffer SN65HVD23x 3.3-V CAN Transceiver CAN Bus Figure 4-7. eCAN Block Diagram and Interface Circuit Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 69 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 4-5. 3.3-V eCAN Transceivers for the TMS320F281x and TMS320C281x DSPs PART NUMBER SUPPLY VOLTAGE LOW-POWER MODE SLOPE CONTROL VREF OTHER SN65HVD230 3.3 V Standby Adjustable Yes – –40°C to 85°C SN65HVD230Q 3.3 V Standby Adjustable Yes – –40°C to 125°C SN65HVD231 3.3 V Sleep Adjustable Yes – –40°C to 85°C SN65HVD231Q 3.3 V Sleep Adjustable Yes – –40°C to 125°C SN65HVD232 3.3 V None None None – –40°C to 85°C SN65HVD232Q 3.3 V None None None – –40°C to 125°C SN65HVD233 3.3 V Standby Adjustable None Diagnostic Loopback –40°C to 125°C SN65HVD234 3.3 V Standby and Sleep Adjustable None – –40°C to 125°C SN65HVD235 3.3 V Standby Adjustable None Autobaud Loopback –40°C to 125°C None Built-in Isolation Low Prop Delay Thermal Shutdown Failsafe Operation Dominant Time-out –55°C to 105°C ISO1050 70 TA Peripherals 3–5.5 V None None Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 eCAN Control and Status Registers Mailbox Enable - CANME Mailbox Direction - CANMD Transmission Request Set - CANTRS Transmission Request Reset - CANTRR Transmission Acknowledge - CANTA Abort Acknowledge - CANAA eCAN Memory (512 Bytes) 6000h Received Message Pending - CANRMP Control and Status Registers 603Fh 6040h 607Fh 6080h 60BFh 60C0h 60FFh Received Message Lost - CANRML Remote Frame Pending - CANRFP Local Acceptance Masks (LAM) (32 x 32-Bit RAM) Global Acceptance Mask - CANGAM Message Object Time Stamps (MOTS) (32 x 32-Bit RAM) Bit-Timing Configuration - CANBTC Message Object Time-Out (MOTO) (32 x 32-Bit RAM) Transmit Error Counter - CANTEC Master Control - CANMC Error and Status - CANES Receive Error Counter - CANREC Global Interrupt Flag 0 - CANGIF0 Global Interrupt Mask - CANGIM Global Interrupt Flag 1 - CANGIF1 eCAN Memory RAM (512 Bytes) 6100h-6107h Mailbox 0 6108h-610Fh Mailbox 1 6110h-6117h Mailbox 2 6118h-611Fh Mailbox 3 6120h-6127h Mailbox 4 Mailbox Interrupt Mask - CANMIM Mailbox Interrupt Level - CANMIL Overwrite Protection Control - CANOPC TX I/O Control - CANTIOC RX I/O Control - CANRIOC Time Stamp Counter - CANTSC Time-Out Control - CANTOC Time-Out Status - CANTOS 61E0h-61E7h Mailbox 28 61E8h-61EFh Mailbox 29 61F0h-61F7h Mailbox 30 61F8h-61FFh Mailbox 31 Reserved Message Mailbox (16 Bytes) 61E8h-61E9h Message Identifier - MSGID 61EAh-61EBh Message Control - MSGCTRL 61ECh-61EDh Message Data Low - MDL 61EEh-61EFh Message Data High - MDH Figure 4-8. eCAN Memory Map NOTE If the eCAN module is not used in an application, the RAM available (LAM, MOTS, MOTO, and mailbox RAM) can be used as general-purpose RAM. The CAN module clock should be enabled for this. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 71 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com The CAN registers listed in Table 4-6 are used by the CPU to configure and control the CAN controller and the message objects. eCAN control registers only support 32-bit read/write operations. Mailbox RAM can be accessed as 16 bits or 32 bits. 32-bit accesses are aligned to an even boundary. Table 4-6. CAN Registers (1) NAME ADDRESS SIZE (x32) CANME 0x00 6000 1 Mailbox enable CANMD 0x00 6002 1 Mailbox direction CANTRS 0x00 6004 1 Transmit request set CANTRR 0x00 6006 1 Transmit request reset CANTA 0x00 6008 1 Transmission acknowledge CANAA 0x00 600A 1 Abort acknowledge CANRMP 0x00 600C 1 Receive message pending CANRML 0x00 600E 1 Receive message lost CANRFP 0x00 6010 1 Remote frame pending CANGAM 0x00 6012 1 Global acceptance mask CANMC 0x00 6014 1 Master control CANBTC 0x00 6016 1 Bit-timing configuration CANES 0x00 6018 1 Error and status CANTEC 0x00 601A 1 Transmit error counter CANREC 0x00 601C 1 Receive error counter CANGIF0 0x00 601E 1 Global interrupt flag 0 CANGIM 0x00 6020 1 Global interrupt mask CANGIF1 0x00 6022 1 Global interrupt flag 1 CANMIM 0x00 6024 1 Mailbox interrupt mask CANMIL 0x00 6026 1 Mailbox interrupt level CANOPC 0x00 6028 1 Overwrite protection control CANTIOC 0x00 602A 1 TX I/O control CANRIOC 0x00 602C 1 RX I/O control CANTSC 0x00 602E 1 Time stamp counter (Reserved in SCC mode) CANTOC 0x00 6030 1 Time-out control (Reserved in SCC mode) CANTOS 0x00 6032 1 Time-out status (Reserved in SCC mode) (1) 72 DESCRIPTION These registers are mapped to Peripheral Frame 1. Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.5 SPRS174T – APRIL 2001 – REVISED MAY 2012 Multichannel Buffered Serial Port (McBSP) Module The McBSP module has the following features: • Compatible to McBSP in TMS320C54x™/ TMS320C55x™ DSP devices, except the DMA features • Full-duplex communication • Double-buffered data registers which allow a continuous data stream • Independent framing and clocking for receive and transmit • External shift clock generation or an internal programmable frequency shift clock • A wide selection of data sizes including 8-, 12-, 16-, 20-, 24-, or 32-bits • 8-bit data transfers with LSB or MSB first • Programmable polarity for both frame synchronization and data clocks • Highly programmable internal clock and frame generation • Support A-bis mode • Direct interface to industry-standard CODECs, Analog Interface Chips (AICs), and other serially connected A/D and D/A devices • Works with SPI-compatible devices • Two 16 x 16-level FIFO for Transmit channel • Two 16 x 16-level FIFO for Receive channel The following application interfaces can be supported on the McBSP: • T1/E1 framers • MVIP switching-compatible and ST-BUS-compliant devices including: – MVIP framers – H.100 framers – SCSA framers – IOM-2 compliant devices – AC97-compliant devices (the necessary multiphase frame synchronization capability is provided.) – IIS-compliant devices • McBSP clock rate = CLKG = CLKSRG/(1 + CLKGDIV) , where CLKSRG source could be LSPCLK, CLKX, or CLKR. (2) (2) Serial port performance is limited by I/O buffer switching speed. Internal prescalers must be adjusted such that the peripheral speed is less than the I/O buffer speed limit—20-MHz maximum. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 73 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Figure 4-9 shows the block diagram of the McBSP module with FIFO, interfaced to the F281x and C281x version of Peripheral Frame 2. Peripheral Write Bus TX FIFO Interrupt MXINT To CPU TX FIFO _15 TX FIFO _15 TX FIFO _1 TX FIFO _1 TX FIFO _0 TX FIFO _0 TX Interrupt Logic McBSP Transmit Interrupt Select Logic TX FIFO Registers 16 LSPCLK 16 DXR2 Transmit Buffer McBSP Registers and Control Logic DXR1 Transmit Buffer 16 16 Compand Logic XSR2 XSR1 RSR2 RSR1 16 16 FSX CLKX DX DR CLKR Expand Logic FSR McBSP RBR2 Register RBR1 Register 16 16 DRR2 Receive Buffer DRR1 Receive Buffer 16 McBSP Receive Interrupt Select Logic MRINT To CPU RX Interrupt Logic RX FIFO Interrupt 16 RX FIFO _15 RX FIFO _15 RX FIFO _1 RX FIFO _1 RX FIFO _0 RX FIFO _0 RX FIFO Registers Peripheral Read Bus Figure 4-9. McBSP Module With FIFO 74 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 4-7 provides a summary of the McBSP registers. Table 4-7. McBSP Registers NAME ADDRESS 0x00 78xxh TYPE (R/W) RESET VALUE (HEX) DESCRIPTION DATA REGISTERS, RECEIVE, TRANSMIT (1) – – – 0x0000 McBSP Receive Buffer Register – – – 0x0000 McBSP Receive Shift Register – – – 0x0000 McBSP Transmit Shift Register DRR2 00 R 0x0000 McBSP Data Receive Register 2 • Read First if the word size is greater than 16 bits, else ignore DRR2 DRR1 01 R 0x0000 McBSP Data Receive Register 1 • Read Second if the word size is greater than 16 bits, else read DRR1 only DXR2 02 W 0x0000 McBSP Data Transmit Register 2 • Write First if the word size is greater than 16 bits, else ignore DXR2 DXR1 03 W 0x0000 McBSP Data Transmit Register 1 • Write Second if the word size is greater than 16 bits, else write to DXR1 only SPCR2 04 R/W 0x0000 McBSP Serial Port Control Register 2 SPCR1 05 R/W 0x0000 McBSP Serial Port Control Register 1 RCR2 06 R/W 0x0000 McBSP Receive Control Register 2 RCR1 07 R/W 0x0000 McBSP Receive Control Register 1 XCR2 08 R/W 0x0000 McBSP Transmit Control Register 2 XCR1 09 R/W 0x0000 McBSP Transmit Control Register 1 SRGR2 0A R/W 0x0000 McBSP Sample Rate Generator Register 2 SRGR1 0B R/W 0x0000 McBSP Sample Rate Generator Register 1 McBSP CONTROL REGISTERS MULTICHANNEL CONTROL REGISTERS (1) MCR2 0C R/W 0x0000 McBSP Multichannel Register 2 MCR1 0D R/W 0x0000 McBSP Multichannel Register 1 RCERA 0E R/W 0x0000 McBSP Receive Channel Enable Register Partition A RCERB 0F R/W 0x0000 McBSP Receive Channel Enable Register Partition B XCERA 10 R/W 0x0000 McBSP Transmit Channel Enable Register Partition A XCERB 11 R/W 0x0000 McBSP Transmit Channel Enable Register Partition B PCR 12 R/W 0x0000 McBSP Pin Control Register RCERC 13 R/W 0x0000 McBSP Receive Channel Enable Register Partition C RCERD 14 R/W 0x0000 McBSP Receive Channel Enable Register Partition D XCERC 15 R/W 0x0000 McBSP Transmit Channel Enable Register Partition C XCERD 16 R/W 0x0000 McBSP Transmit Channel Enable Register Partition D RCERE 17 R/W 0x0000 McBSP Receive Channel Enable Register Partition E RCERF 18 R/W 0x0000 McBSP Receive Channel Enable Register Partition F XCERE 19 R/W 0x0000 McBSP Transmit Channel Enable Register Partition E XCERF 1A R/W 0x0000 McBSP Transmit Channel Enable Register Partition F RCERG 1B R/W 0x0000 McBSP Receive Channel Enable Register Partition G RCERH 1C R/W 0x0000 McBSP Receive Channel Enable Register Partition H XCERG 1D R/W 0x0000 McBSP Transmit Channel Enable Register Partition G XCERH 1E R/W 0x0000 McBSP Transmit Channel Enable Register Partition H DRR2/DRR1 and DXR2/DXR1 share the same addresses of receive and transmit FIFO registers in FIFO mode. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 75 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Table 4-7. McBSP Registers (continued) NAME ADDRESS 0x00 78xxh TYPE (R/W) RESET VALUE (HEX) DESCRIPTION FIFO MODE REGISTERS (applicable only in FIFO mode) FIFO Data Registers (2) DRR2 00 R 0x0000 McBSP Data Receive Register 2 – Top of receive FIFO • Read First FIFO pointers will not advance DRR1 01 R 0x0000 McBSP Data Receive Register 1 – Top of receive FIFO • Read Second for FIFO pointers to advance DXR2 02 W 0x0000 McBSP Data Transmit Register 2 – Top of transmit FIFO • Write First FIFO pointers will not advance DXR1 03 W 0x0000 McBSP Data Transmit Register 1 – Top of transmit FIFO • Write Second for FIFO pointers to advance MFFTX 20 R/W 0xA000 McBSP Transmit FIFO Register MFFRX 21 R/W 0x201F McBSP Receive FIFO Register MFFCT 22 R/W 0x0000 McBSP FIFO Control Register MFFINT 23 R/W 0x0000 McBSP FIFO Interrupt Register MFFST 24 R/W 0x0000 McBSP FIFO Status Register FIFO Control Registers (2) 76 FIFO pointers advancing is based on order of access to DRR2/DRR1 and DXR2/DXR1 registers. Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.6 SPRS174T – APRIL 2001 – REVISED MAY 2012 Serial Communications Interface (SCI) Module The F281x and C281x devices include two serial communications interface (SCI) modules. The SCI modules support digital communications between the CPU and other asynchronous peripherals that use the standard non-return-to-zero (NRZ) format. The SCI receiver and transmitter are double-buffered, and each has its own separate enable and interrupt bits. Both can be operated independently or simultaneously in the full-duplex mode. To ensure data integrity, the SCI checks received data for break detection, parity, overrun, and framing errors. The bit rate is programmable to over 65000 different speeds through a 16-bit baud-select register. Features of each SCI module include: • Two external pins: – SCITXD: SCI transmit-output pin – SCIRXD: SCI receive-input pin NOTE: Both pins can be used as GPIO if not used for SCI. • Baud rate programmable to 64K different rates (3) Baud rate = = • • • • • • • • • • LSPCLK (BRR + 1) * 8 when BRR ¹ 0 LSPCLK 16 when BRR = 0 Data-word format – One start bit – Data-word length programmable from one to eight bits – Optional even/odd/no parity bit – One or two stop bits Four error-detection flags: parity, overrun, framing, and break detection Two wake-up multiprocessor modes: idle-line and address bit Half- or full-duplex operation Double-buffered receive and transmit functions Transmitter and receiver operations can be accomplished through interrupt-driven or polled algorithms with status flags. – Transmitter: TXRDY flag (transmitter-buffer register is ready to receive another character) and TX EMPTY flag (transmitter-shift register is empty) – Receiver: RXRDY flag (receiver-buffer register is ready to receive another character), BRKDT flag (break condition occurred), and RX ERROR flag (monitoring four interrupt conditions) Separate enable bits for transmitter and receiver interrupts (except BRKDT) Max bit rate = 75 MHz/16 = 4.688 x 106 b/s NRZ (non-return-to-zero) format Ten SCI module control registers located in the control register frame beginning at address 7050h NOTE: All registers in this module are 8-bit registers that are connected to Peripheral Frame 2. When a register is accessed, the register data is in the lower byte (7–0), and the upper byte (15–8) is read as zeros. Writing to the upper byte has no effect. Enhanced features: • Auto baud-detect hardware logic • 16-level transmit/receive FIFO (3) Serial port performance is limited by I/O buffer switching speed. Internal prescalers must be adjusted such that the peripheral speed is less than the I/O buffer speed limit—20 MHz maximum. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 77 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com The SCI port operation is configured and controlled by the registers listed in Table 4-8 and Table 4-9. Table 4-8. SCI-A Registers NAME ADDRESS SIZE (x16) SCICCRA 0x00 7050 1 SCI-A Communications Control Register SCICTL1A 0x00 7051 1 SCI-A Control Register 1 SCIHBAUDA 0x00 7052 1 SCI-A Baud Register, High Bits SCILBAUDA 0x00 7053 1 SCI-A Baud Register, Low Bits SCICTL2A 0x00 7054 1 SCI-A Control Register 2 SCIRXSTA 0x00 7055 1 SCI-A Receive Status Register SCIRXEMUA 0x00 7056 1 SCI-A Receive Emulation Data Buffer Register SCIRXBUFA 0x00 7057 1 SCI-A Receive Data Buffer Register SCITXBUFA 0x00 7059 1 SCI-A Transmit Data Buffer Register SCIFFTXA (1) 0x00 705A 1 SCI-A FIFO Transmit Register (1) 0x00 705B 1 SCI-A FIFO Receive Register SCIFFCTA (1) 0x00 705C 1 SCI-A FIFO Control Register SCIPRIA 0x00 705F 1 SCI-A Priority Control Register SCIFFRXA (1) DESCRIPTION These registers are new registers for the FIFO mode. Table 4-9. SCI-B Registers (1) ADDRESS SIZE (x16) SCICCRB NAME 0x00 7750 1 SCI-B Communications Control Register SCICTL1B 0x00 7751 1 SCI-B Control Register 1 SCIHBAUDB 0x00 7752 1 SCI-B Baud Register, High Bits SCILBAUDB 0x00 7753 1 SCI-B Baud Register, Low Bits SCICTL2B 0x00 7754 1 SCI-B Control Register 2 SCIRXSTB 0x00 7755 1 SCI-B Receive Status Register SCIRXEMUB 0x00 7756 1 SCI-B Receive Emulation Data Buffer Register SCIRXBUFB 0x00 7757 1 SCI-B Receive Data Buffer Register SCITXBUFB 0x00 7759 1 SCI-B Transmit Data Buffer Register (2) 0x00 775A 1 SCI-B FIFO Transmit Register SCIFFRXB (2) 0x00 775B 1 SCI-B FIFO Receive Register SCIFFCTB (2) 0x00 775C 1 SCI-B FIFO Control Register SCIPRIB 0x00 775F 1 SCI-B Priority Control Register SCIFFTXB (1) (2) 78 DESCRIPTION Registers in this table are mapped to peripheral bus 16 space. This space only allows 16-bit accesses. 32-bit accesses produce undefined results. These registers are new registers for the FIFO mode. Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Figure 4-10 shows the SCI module block diagram. SCICTL1.1 Frame Format and Mode SCITXD TXSHF Register Parity Even/Odd Enable TX EMPTY SCICTL2.6 8 SCICCR.6 SCICCR.5 TXRDY SCICTL2.7 Transmitter-Data Buffer Register TXWAKE SCICTL1.3 SCICTL2.0 TXINT TX FIFO _0 TX Interrupt Logic TX FIFO _1 WUT ----- TX FIFO _15 TX FIFO Interrupts SCITXBUF.7-0 TX FIFO Registers SCIFFENA SCIHBAUD. 15 - 8 Baud Rate MSbyte Register LSPCLK TX INT ENA 8 1 SCITXD TXENA To CPU SCI TX Interrupt Select Logic AutoBaud Detect Logic SCIFFTX.14 SCIRXD SCIRXD RXSHF Register RXWAKE SCIRXST.1 SCILBAUD. 7 - 0 RXENA 8 Baud Rate LSbyte Register SCICTL1.0 SCICTL2.1 RXRDY Receive-Data Buffer Register SCIRXBUF.7-0 RX/BK INT ENA SCIRXST.6 BRKDT 8 SCIRXST.5 RX FIFO _15 ----- RX FIFO _1 RX FIFO _0 RX FIFO Interrupts RX Interrupt Logic To CPU SCIRXBUF.7-0 RX FIFO Registers RXFFOVF SCIRXST.7 SCIRXST.4 - 2 RX Error FE OE PE RXINT SCIFFRX.15 RX Error RX ERR INT ENA SCI RX Interrupt Select Logic SCICTL1.6 Figure 4-10. Serial Communications Interface (SCI) Module Block Diagram Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 79 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 4.7 www.ti.com Serial Peripheral Interface (SPI) Module The F281x and C281x devices include the four-pin serial peripheral interface (SPI) module. The SPI is a high-speed, synchronous serial I/O port that allows a serial bit stream of programmed length (one to sixteen bits) to be shifted into and out of the device at a programmable bit-transfer rate. Normally, the SPI is used for communications between the DSP controller and external peripherals or another processor. Typical applications include external I/O or peripheral expansion through devices such as shift registers, display drivers, and ADCs. Multidevice communications are supported by the master/slave operation of the SPI. The SPI module features include: • Four external pins: – SPISOMI: SPI slave-output/master-input pin – SPISIMO: SPI slave-input/master-output pin – SPISTE: SPI slave transmit-enable pin – SPICLK: SPI serial-clock pin NOTE: All four pins can be used as GPIO, if the SPI module is not used. • Two operational modes: master and slave • Baud rate: 125 different programmable rates Baud rate = = • • • • • LSPCLK (SPIBRR + 1) when SPIBRR ¹ 0 LSPCLK 4 when SPIBRR = 0, 1, 2, 3 Serial port performance is limited by I/O buffer switching speed. Internal prescalers must be adjusted such that the peripheral speed is less than the I/O buffer speed limit—20 MHz maximum. Data word length: one to sixteen data bits Four clocking schemes (controlled by clock polarity and clock phase bits) include: – Falling edge without phase delay: SPICLK active-high. SPI transmits data on the falling edge of the SPICLK signal and receives data on the rising edge of the SPICLK signal. – Falling edge with phase delay: SPICLK active-high. SPI transmits data one half-cycle ahead of the falling edge of the SPICLK signal and receives data on the falling edge of the SPICLK signal. – Rising edge without phase delay: SPICLK inactive-low. SPI transmits data on the rising edge of the SPICLK signal and receives data on the falling edge of the SPICLK signal. – Rising edge with phase delay: SPICLK inactive-low. SPI transmits data one half-cycle ahead of the falling edge of the SPICLK signal and receives data on the rising edge of the SPICLK signal. Simultaneous receive and transmit operation (transmit function can be disabled in software) Transmitter and receiver operations are accomplished through either interrupt-driven or polled algorithms. Nine SPI module control registers: Located in control register frame beginning at address 7040h. NOTE: All registers in this module are 16-bit registers that are connected to Peripheral Frame 2. When a register is accessed, the register data is in the lower byte (7–0), and the upper byte (15–8) is read as zeros. Writing to the upper byte has no effect. Enhanced features: • 16-level transmit/receive FIFO • Delayed transmit control 80 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 The SPI port operation is configured and controlled by the registers listed in Table 4-10. Table 4-10. SPI Registers (1) NAME ADDRESS SIZE (x16) SPICCR 0x00 7040 1 SPI Configuration Control Register SPICTL 0x00 7041 1 SPI Operation Control Register SPISTS 0x00 7042 1 SPI Status Register SPIBRR 0x00 7044 1 SPI Baud Rate Register SPIRXEMU 0x00 7046 1 SPI Receive Emulation Buffer Register SPIRXBUF 0x00 7047 1 SPI Serial Input Buffer Register SPITXBUF 0x00 7048 1 SPI Serial Output Buffer Register SPIDAT 0x00 7049 1 SPI Serial Data Register SPIFFTX 0x00 704A 1 SPI FIFO Transmit Register SPIFFRX 0x00 704B 1 SPI FIFO Receive Register SPIFFCT 0x00 704C 1 SPI FIFO Control Register SPIPRI 0x00 704F 1 SPI Priority Control Register (1) DESCRIPTION These registers are mapped to Peripheral Frame 2. This space only allows 16-bit accesses. 32-bit accesses produce undefined results. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 81 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com Figure 4-11 is a block diagram of the SPI in slave mode. SPIFFENA SPIFFTX.14 Overrun INT ENA Receiver Overrun Flag RX FIFO Registers SPIRXBUF RX FIFO _0 RX FIFO _1 ----RX FIFO _15 SPISTS.7 SPICTL.4 RX FIFO Interrupt RX Interrupt Logic 16 SPIINT/SPIRXINT SPIFFOVF FLAG SPIRXBUF Buffer Register To CPU SPIFFRX.15 TX FIFO Registers SPITXBUF TX FIFO Interrupt TX Interrupt Logic TX FIFO _15 ----TX FIFO _1 TX FIFO _0 16 SPI INT FLAG SPITXINT SPI INT ENA SPISTS.6 SPICTL.0 16 SPITXBUF Buffer Register 16 M M S SPIDAT Data Register S SW1 SPISIMO M M SPIDAT.15 - 0 S S SW2 SPISOMI Talk SPICTL.1 (A) SPISTE State Control Master/Slave SPI Char SPICCR.3 - 0 3 2 1 0 SW3 M SPI Bit Rate LSPCLK SPIBRR.6 - 0 6 A. 5 4 3 SPICTL.2 S 2 1 0 S Clock Polarity SPICCR.6 Clock Phase SPICTL.3 SPICLK M SPISTE is driven low by the master for a slave device. Figure 4-11. Serial Peripheral Interface Module Block Diagram (Slave Mode) 82 Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 4.8 SPRS174T – APRIL 2001 – REVISED MAY 2012 GPIO MUX The GPIO Mux registers are used to select the operation of shared pins on the F281x and C281x devices. The pins can be individually selected to operate as “Digital I/O” or connected to “Peripheral I/O” signals (via the GPxMUX registers). If selected for “Digital I/O”mode, registers are provided to configure the pin direction (via the GPxDIR registers) and to qualify the input signal to remove unwanted noise (via the GPxQUAL) registers). Table 4-11 lists the GPIO Mux Registers. Table 4-11. GPIO Mux Registers (1) (2) (3) ADDRESS SIZE (x16) GPAMUX NAME 0x00 70C0 1 GPIO A Mux Control Register GPADIR 0x00 70C1 1 GPIO A Direction Control Register GPAQUAL 0x00 70C2 1 GPIO A Input Qualification Control Register Reserved 0x00 70C3 1 GPBMUX 0x00 70C4 1 GPIO B Mux Control Register GPBDIR 0x00 70C5 1 GPIO B Direction Control Register GPBQUAL 0x00 70C6 1 GPIO B Input Qualification Control Register Reserved 0x00 70C7 1 Reserved 0x00 70C8 1 Reserved 0x00 70C9 1 Reserved 0x00 70CA 1 Reserved 0x00 70CB 1 GPDMUX 0x00 70CC 1 GPIO D Mux Control Register GPDDIR 0x00 70CD 1 GPIO D Direction Control Register GPDQUAL 0x00 70CE 1 GPIO D Input Qualification Control Register Reserved 0x00 70CF 1 GPEMUX 0x00 70D0 1 GPIO E Mux Control Register GPEDIR 0x00 70D1 1 GPIO E Direction Control Register GPEQUAL 0x00 70D2 1 GPIO E Input Qualification Control Register Reserved 0x00 70D3 1 GPFMUX 0x00 70D4 1 GPIO F Mux Control Register GPFDIR 0x00 70D5 1 GPIO F Direction Control Register Reserved 0x00 70D6 1 Reserved 0x00 70D7 1 GPGMUX 0x00 70D8 1 GPIO G Mux Control Register GPGDIR 0x00 70D9 1 GPIO G Direction Control Register Reserved 0x00 70DA 1 Reserved 0x00 70DB 1 Reserved 0x00 70DC – 0x00 70DF 4 (1) (2) (3) DESCRIPTION Reserved locations return undefined values and writes are ignored. Not all inputs support input signal qualification. These registers are EALLOW protected. This prevents spurious writes from overwriting the contents and corrupting the system. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 83 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com If configured for ”Digital I/O” mode, additional registers are provided for setting individual I/O signals (via the GPxSET registers), for clearing individual I/O signals (via the GPxCLEAR registers), for toggling individual I/O signals (via the GPxTOGGLE registers), or for reading/writing to the individual I/O signals (via the GPxDAT registers). Table 4-12 lists the GPIO Data Registers. For more information, see the TMS320x281x DSP System Control and Interrupts Reference Guide (literature number SPRU078). Table 4-12. GPIO Data Registers (1) (2) NAME ADDRESS SIZE (x16) GPADAT 0x00 70E0 1 GPIO A Data Register GPASET 0x00 70E1 1 GPIO A Set Register GPACLEAR 0x00 70E2 1 GPIO A Clear Register GPATOGGLE 0x00 70E3 1 GPIO A Toggle Register GPBDAT 0x00 70E4 1 GPIO B Data Register GPBSET 0x00 70E5 1 GPIO B Set Register GPBCLEAR 0x00 70E6 1 GPIO B Clear Register GPBTOGGLE 0x00 70E7 1 GPIO B Toggle Register Reserved 0x00 70E8 1 Reserved 0x00 70E9 1 Reserved 0x00 70EA 1 Reserved 0x00 70EB 1 GPDDAT 0x00 70EC 1 GPIO D Data Register GPDSET 0x00 70ED 1 GPIO D Set Register GPDCLEAR 0x00 70EE 1 GPIO D Clear Register GPDTOGGLE 0x00 70EF 1 GPIO D Toggle Register GPEDAT 0x00 70F0 1 GPIO E Data Register GPESET 0x00 70F1 1 GPIO E Set Register GPECLEAR 0x00 70F2 1 GPIO E Clear Register GPETOGGLE 0x00 70F3 1 GPIO E Toggle Register GPFDAT 0x00 70F4 1 GPIO F Data Register GPFSET 0x00 70F5 1 GPIO F Set Register GPFCLEAR 0x00 70F6 1 GPIO F Clear Register GPFTOGGLE 0x00 70F7 1 GPIO F Toggle Register GPGDAT 0x00 70F8 1 GPIO G Data Register GPGSET 0x00 70F9 1 GPIO G Set Register GPGCLEAR 0x00 70FA 1 GPIO G Clear Register 0x00 70FB 1 GPIO G Toggle Register 0x00 70FC – 0x00 70FF 4 GPGTOGGLE Reserved (1) (2) 84 DESCRIPTION Reserved locations will return undefined values and writes will be ignored. These registers are NOT EALLOW protected. The above registers will typically be accessed regularly by the user. Peripherals Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Figure 4-12 shows how the various register bits select the various modes of operation for GPIO function. GPxDAT/SET/CLEAR/TOGGLE Register Bit(s) Digital I/O GPxQUAL Register GPxMUX Register Bit 0 Peripheral I/O HighImpedance Control GPxDIR Register Bit 0 1 MUX 1 MUX SYSCLKOUT Input Qualification High-Impedance Enable (1) XRS Internal (Pullup or Pulldown) PIN A. B. In the GPIO mode, when the GPIO pin is configured for output operation, reading the GPxDAT data register only gives the value written, not the value at the pin. In the peripheral mode, the state of the pin can be read through the GPxDAT register, provided the corresponding direction bit is zero (input mode). Some selected input signals are qualified by the SYSCLKOUT. The GPxQUAL register specifies the qualification sampling period. The sampling window is 6 samples wide and the output is only changed when all samples are the same (all 0's or all 1's). This feature removes unwanted spikes from the input signal. Figure 4-12. GPIO/Peripheral Pin Multiplexing NOTE The input function of the GPIO pin and the input path to the peripheral are always enabled. It is the output function of the GPIO pin that is multiplexed with the output path of the primary (peripheral) function. Since the output buffer of a pin connects back to the input buffer, any GPIO signal present at the pin will be propagated to the peripheral module as well. Therefore, when a pin is configured for GPIO operation, the corresponding peripheral functionality (and interrupt-generating capability) must be disabled. Otherwise, interrupts may be inadvertently triggered. This is especially critical when the PDPINTA and PDPINTB pins are used as GPIO pins, since a value of zero for GPDDAT.0 or GPDDAT.5 (PDPINTx) will put PWM pins in a high-impedance state. The CxTRIP and TxCTRIP pins will also put the corresponding PWM pins in high impedance, if they are driven low (as GPIO pins) and bit EXTCONx.0 = 1. Peripherals Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 85 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 5 www.ti.com Development Support Texas Instruments ( TI™) offers an extensive line of development tools for the C28x™ generation of DSPs, including tools to evaluate the performance of the processors, generate code, develop algorithm implementations, and fully integrate and debug software and hardware modules. The following products support development of F281x- and C281x-based applications: Software Development Tools • Code Composer Studio™ Integrated Development Environment (IDE) – C/C++ Compiler – Code generation tools – Assembler/Linker – Cycle Accurate Simulator • Application algorithms • Sample applications code Hardware Development Tools • 2812 eZdsp • JTAG-based emulators – SPI515, XDS510PP, XDS510PP Plus, XDS510 USB • Universal 5-V dc power supply • Documentation and cables 5.1 Device and Development Support Tool Nomenclature To designate the stages in the product development cycle, TI assigns prefixes to the part numbers of all TMS320™ DSP devices and support tools. Each TMS320 DSP commercial family member has one of three prefixes: TMX, TMP, or TMS (for example, TMS320F2812GHH). Texas Instruments recommends two of three possible prefix designators for its support tools: TMDX and TMDS. These prefixes represent evolutionary stages of product development from engineering prototypes (TMX/TMDX) through fully qualified production devices/tools (TMS/TMDS). TMX Experimental device that is not necessarily representative of the final device’s electrical specifications TMP Final silicon die that conforms to the device’s electrical specifications but has not completed quality and reliability verification TMS Fully qualified production device Support tool development evolutionary flow: TMDX Development-support product that has not yet completed Texas Instruments internal qualification testing TMDS Fully qualified development-support product TMX and TMP devices and TMDX development-support tools are shipped against the following disclaimer: "Developmental product is intended for internal evaluation purposes." TMS devices and TMDS development-support tools have been characterized fully, and the quality and reliability of the device have been demonstrated fully. TI’s standard warranty applies. Predictions show that prototype devices (TMX or TMP) have a greater failure rate than the standard production devices. Texas Instruments recommends that these devices not be used in any production system because their expected end-use failure rate still is undefined. Only qualified production devices are to be used. 86 Development Support Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 TI device nomenclature also includes a suffix with the device family name. This suffix indicates the package type (for example, PBK) and temperature range (for example, A). Figure 5-1 provides a legend for reading the complete device name for any TMS320x281x family member. TMS 320 F 2810 PBK PREFIX TMX = experimental device TMP = prototype device TMS = qualified device A TEMPERATURE RANGE A = −40°C to 85°C S = −40°C to 125°C Q = −40°C to 125°C (Q100 qualification) (A) DEVICE FAMILY TM 320 = TMS320 DSP Family TECHNOLOGY F = Flash EEPROM (1.8-V/1.9-V Core/3.3-V I/O) C = ROM (1.8-V/1.9-V Core/3.3-V I/O) PACKAGE TYPE TM GHH = 179-ball MicroStar BGA ZHH = 179-ball MicroStar BGA (lead-free) PGF = 176-pin LQFP PBK = 128-pin LQFP DEVICE 2810 2811 2812 A. BGA = Ball Grid Array LQFP = Low-Profile Quad Flatpack Figure 5-1. TMS320x281x Device Nomenclature 5.2 Documentation Support Extensive documentation supports all of the TMS320™ DSP family generations of devices from product announcement through applications development. The types of documentation available include: data sheets and data manuals, with design specifications; and hardware and software applications. Table 5-1 shows the peripheral reference guides appropriate for use with the devices in this data manual. See the TMS320x28xx, 28xxx DSP Peripheral Reference Guide (literature number SPRU566) for more information on types of peripherals. Table 5-1. TMS320x281x Peripheral Selection Guide LIT. NO. TYPE (1) 2812 2811, 2810 TMS320x281x DSP System Control and Interrupts SPRU078 – x x TMS320x281x DSP External Interface (XINTF) SPRU067 0 x TMS320x281x Enhanced Controller Area Network (eCAN) SPRU074 0 x x TMS320x281x DSP Event Manager (EV) SPRU065 0 x x TMS320x281x DSP Analog-to-Digital Converter (ADC) SPRU060 0 x x TMS320x281x DSP Multichannel Buffered Serial Port (McBSP) SPRU061 0 x x TMS320x281x Serial Communications Interface (SCI) SPRU051 0 x x TMS320x281x Serial Peripheral Interface SPRU059 0 x x TMS320x281x DSP Boot ROM SPRU095 – x x PERIPHERAL (1) A type change represents a major functional feature difference in a peripheral module. Within a peripheral type, there may be minor differences between devices which do not affect the basic functionality of the module. These device-specific differences are listed in the peripheral reference guides. Development Support Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 87 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com The following documents are available on the TI website (http://www.ti.com): 88 SPRU430 TMS320C28x CPU and Instruction Set Reference Guide describes the central processing unit (CPU) and the assembly language instructions of the TMS320C28x™ fixed-point digital signal processors (DSPs). It also describes emulation features available on these DSPs. SPRU060 TMS320x281x DSP Analog-to-Digital Converter (ADC) Reference Guide describes the ADC module. The module is a 12-bit pipelined ADC. The analog circuits of this converter, referred to as the core in this document, include the front-end analog multiplexers (MUXs), sample-and-hold (S/H) circuits, the conversion core, voltage regulators, and other analog supporting circuits. Digital circuits, referred to as the wrapper in this document, include programmable conversion sequencer, result registers, interface to analog circuits, interface to device peripheral bus, and interface to other on-chip modules. SPRU095 TMS320x281x DSP Boot ROM Reference Guide describes the purpose and features of the bootloader (factory-programmed boot-loading software). It also describes other contents of the device on-chip boot ROM and identifies where all of the information is located within that memory. SPRU065 TMS320x281x DSP Event Manager (EV) Reference Guide describes the EV modules that provide a broad range of functions and features that are particularly useful in motion control and motor control applications. The EV modules include general-purpose (GP) timers, fullcompare/PWM units, capture units, and quadrature-encoder pulse (QEP) circuits. SPRU067 TMS320x281x DSP External Interface (XINTF) Reference Guide describes the external interface (XINTF) of the 281x digital signal processors (DSPs). SPRU061 TMS320x281x DSP Multichannel Buffered Serial Port (McBSP) Reference Guide describes the McBSP available on the 281x devices. The McBSPs allow direct interface between a DSP and other devices in a system. SPRU078 TMS320x281x DSP System Control and Interrupts Reference Guide describes the various interrupts and system control features of the 281x digital signal processors (DSPs). SPRU074 TMS320x281x Enhanced Controller Area Network (eCAN) Reference Guide describes the eCAN that uses established protocol to communicate serially with other controllers in electrically noisy environments. With 32 fully configurable mailboxes and time-stamping feature, the eCAN module provides a versatile and robust serial communication interface. The eCAN module implemented in the C28x DSP is compatible with the CAN 2.0B standard (active). SPRU566 TMS320x28xx, 28xxx DSP Peripheral Reference Guide describes the peripheral reference guides of the 28x digital signal processors (DSPs). SPRU051 TMS320x281x Serial Communications Interface (SCI) Reference Guide describes the SCI that is a two-wire asynchronous serial port, commonly known as a UART. The SCI modules support digital communications between the CPU and other asynchronous peripherals that use the standard non-return-to-zero (NRZ) format. SPRU059 TMS320x281x Serial Peripheral Interface Reference Guide describes the SPI—a highspeed synchronous serial input/output (I/O) port that allows a serial bit stream of programmed length (one to sixteen bits) to be shifted into and out of the device at a programmed bit-transfer rate. The SPI is used for communications between the DSP controller and external peripherals or another controller. Development Support Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 SPRA550 3.3V DSP for Digital Motor Control Application Report. The application report first describes a scenario of a 3.3-V-only motor controller indicating that for most applications, no significant issue of interfacing between 3.3 V and 5 V exists. Cost-effective 3.3-V/5-V interfacing techniques are then discussed for the situations where such interfacing is needed. On-chip 3.3-V analog-to-digital converter (ADC) versus 5-V ADC is also discussed. Guidelines for component layout and printed circuit board (PCB) design that can reduce system noise and EMI effects are summarized in the last section. SPRU608 TMS320C28x Instruction Set Simulator Technical Overview describes the simulator, available within the Code Composer Studio for TMS320C2000™ IDE, that simulates the instruction set of the C28x core. SPRU625 TMS320C28x DSP/BIOS 5.x Application Programming Interface (API) Reference Guide describes development using DSP/BIOS™. SPRU513 TMS320C28x Assembly Language Tools v5.0 User’s Guide describes the assembly language tools (assembler and other tools used to develop assembly language code), assembler directives, macros, common object file format, and symbolic debugging directives for the TMS320C28x™ device. SPRU514 TMS320C28x Optimizing C/C++ Compiler v5.0 User’s Guide describes the TMS320C28x™ C/C++ compiler. This compiler accepts ANSI standard C/C++ source code and produces TMS320™ DSP assembly language source code for the TMS320C28x device. SPRA876 Programming Examples for the TMS320F281x eCAN Application Report contains several programming examples to illustrate how the eCAN module is set up for different modes of operation. The objective is to help you come up to speed quickly in programming the eCAN. All programs have been extensively commented to aid easy understanding. The CANalyzer tool from Vector CANtech, Inc. was used to monitor and control the bus operation. All projects and CANalyzer configuration files are included in the spra876.zip file. SPRA989 F2810, F2811, and F2812 ADC Calibration Application Report describes a method for improving the absolute accuracy of the 12-bit analog-to-digital converter (ADC) found on the F2810/F2811/F2812 devices. Due to inherent gain and offset errors, the absolute accuracy of the ADC is impacted. The methods described in this application note can improve the absolute accuracy of the ADC to achieve levels better than 0.5%. This application note is accompanied by an example program (ADCcalibration, spra989.zip) that executes from RAM on the F2812 eZdsp. A series of DSP textbooks is published by Prentice-Hall and John Wiley & Sons to support digital signal processing research and education. The TMS320™ DSP newsletter, Details on Signal Processing, is published quarterly and distributed to update TMS320™ DSP customers on product information. Updated information on the TMS320™ DSP controllers can be found on the worldwide web at: http://www.ti.com. To send comments regarding this TMS320F2810, TMS320F2811, TMS320F2812, TMS320C2810, TMS320C2811,TMS320C2812 Digital Signal Processors Data Manual (literature number SPRS174), click on the Submit Documentation Feedback link at the bottom of the page. For questions and support, contact the Product Information Center listed at the http://www.ti.com/sc/docs/pic/home.htm site. 5.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Development Support Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 89 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 www.ti.com TI Embedded Processors Wiki Texas Instruments Embedded Processors Wiki. Established to help developers get started with Embedded Processors from Texas Instruments and to foster innovation and growth of general knowledge about the hardware and software surrounding these devices. 90 Development Support Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 6 SPRS174T – APRIL 2001 – REVISED MAY 2012 Electrical Specifications This section provides the absolute maximum ratings and the recommended operating conditions for the TMS320F281x and TMS320C281x DSPs. Absolute Maximum Ratings (1) 6.1 Supply voltage range (VDDIO, VDD3VFL, VDDA1, VDDA2, VDDAIO, and AVDDREFBG) –0.3 V to 4.6 V Supply voltage range (VDD, VDD1) –0.5 V to 2.5 V Input voltage range, VIN –0.3 V to 4.6 V Output voltage range, VO –0.3 V to 4.6 V Input clamp current, IIK (VIN < 0 or VIN > VDDIO) (2) ±20 mA Output clamp current, IOK (VO < 0 or VO > VDDIO) Operating ambient temperature ranges, TA ±20 mA (3) –40°C to 85°C S version (GHH, ZHH, PGF, PBK) (3) –40°C to 125°C Q version (PGF, PBK) (3) –40°C to 125°C A version (GHH, ZHH, PGF, PBK) Junction temperature range, TJ –40°C to 150°C Storage temperature range, Tstg (3) –65°C to 150°C (1) (2) (3) Unless otherwise noted, the list of absolute maximum ratings are specified over operating temperature ranges. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Section 6.2, Recommended Operating Conditions, is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to VSS. Continuous clamp current per pin is ±2 mA Long-term high-temperature storage and/or extended use at maximum temperature conditions may result in a reduction of overall device life. For additional information, see the IC Package Thermal Metrics Application Report (literature number SPRA953) and the Reliability Data for TMS320LF24xx and TMS320F28xx Devices Application Report (literature number SPRA963). Recommended Operating Conditions (1) 6.2 VDDIO MIN NOM MAX UNIT 3.14 3.3 3.47 V 1.8 V (135 MHz) 1.71 1.8 1.89 1.9 V (150 MHz) 1.81 1.9 2 3.14 3.3 3.47 V 3.14 3.3 3.47 V Device supply voltage, I/O VDD, VDD1 Device supply voltage, CPU VSS Supply ground VDDA1, VDDA2, AVDDREFBG, VDDAIO ADC supply voltage VDD3VFL Flash programming supply voltage fSYSCLKOUT Device clock frequency (system clock) VDD = 1.9 V ± 5% 2 150 VDD = 1.8 V ± 5% 2 135 High-level input voltage All inputs except X1/XCLKIN 2 VDDIO 0.7VDD VDD VIH 0 X1/XCLKIN (@ 50 µA max) VIL Low-level input voltage All inputs except X1/XCLKIN IOH IOL TA (1) (2) V 0.8 X1/XCLKIN (@ 50 µA max) MHz V V 0.3VDD High-level output source current, VOH = 2.4 V All I/Os except Group 2 –4 Group 2 (2) –8 Low-level output sink current, VOL = VOL MAX All I/Os except Group 2 4 Group 2 (2) 8 Ambient temperature V A version –40 85 S version –40 125 Q version –40 125 mA mA °C See Section 6.8 for power sequencing of VDDIO, VDDAIO, VDD, VDDA1/VDDA2/AVDDREFBG, and VDD3VFL. Group 2 pins are as follows: XINTF pins, T1CTRIP_PDPINTA, TDO, XCLKOUT, XF, EMU0, and EMU1. Electrical Specifications Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 Copyright © 2001–2012, Texas Instruments Incorporated 91 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 SPRS174T – APRIL 2001 – REVISED MAY 2012 6.3 www.ti.com Electrical Characteristics Over Recommended Operating Conditions (Unless Otherwise Noted) PARAMETER TEST CONDITIONS VOH High-level output voltage VOL Low-level output voltage IOL = IOL MAX IIL (1) Input current (low level) With pullup VDDIO = 3.3 V, VIN = 0 V With pulldown VDDIO = 3.3 V, VIN = 0 V MIN IOH = IOH MAX IOH = 50 µA IIL (2) IIH Input current (low level) Input current (high level) With pullup VDDIO = 3.3 V, VIN = 0 V TYP MAX 2.4 UNIT V VDDIO – 0.2 –80 –140 0.4 V –190 µA ±2 (3) All I/Os (including XRS) except EVB –80 –140 –190 GPIOB/EVB –13 –25 –35 With pulldown VDDIO = 3.3 V, VIN = 0 V With pullup VDDIO = 3.3 V, VIN = VDD With pulldown (4) VDDIO = 3.3 V, VIN = VDD µA ±2 ±2 28 50 IOZ Leakage current (for pins without internal PU/PD), high-impedance state (off-state) Ci Input capacitance 2 pF Co Output capacitance 3 pF (1) (2) (3) (4) 92 VO = VDDIO or 0 V µA 80 ±2 µA Applicable to C281x devices Applicable to F281x devices The following pins have no internal PU/PD: GPIOE0, GPIOE1, GPIOF0, GPIOF1, GPIOF2, GPIOF3, GPIOF12, GPIOG4, and GPIOG5. The following pins have an internal pulldown: XMP/MC, TESTSEL, and TRST. Electrical Specifications Copyright © 2001–2012, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com 6.4 SPRS174T – APRIL 2001 – REVISED MAY 2012 Current Consumption Table 6-1. TMS320F281x Current Consumption by Power-Supply Pins Over Recommended Operating Conditions During Low-Power Modes at 150-MHz SYSCLKOUT MODE TEST CONDITIONS Operational All peripheral clocks are enabled. All PWM pins are toggled at 100 kHz. Data is continuously transmitted out of the SCIA, SCIB, and CAN ports. The hardware multiplier is exercised. Code is running out of flash with 5 waitstates. IDLE • • • Flash is powered down XCLKOUT is turned off All peripheral clocks are on, except ADC STANDBY • • • • • • HALT • (1) (2) (3) (4) IDDIO (1) IDD TYP MAX (3) TYP MAX IDDA (2) IDD3VFL (3) TYP MAX (3) TYP MAX (3) 195 mA (4) 230 mA 15 mA 30 mA 40 mA 45 mA 40 mA 50 mA 125 mA 150 mA 5 mA 10 mA 2 µA 4 µA 1 µA 20 µA Flash is powered down Peripheral clocks are turned off Pins without an internal PU/PD are tied high/low 5 mA 10 mA 5 µA 20 µA 2 µA 4 µA 1 µA 20 µA Flash is powered down Peripheral clocks are turned off Pins without an internal PU/PD are tied high/low Input clock is disabled 70 µA 5 µA 20 µA 2 µA 4 µA 1 µA 20 µA IDDIO current is dependent on the electrical loading on the I/O pins. IDDA includes current into VDDA1, VDDA2, AVDDREFBG, and VDDAIO pins. MAX numbers are at 125°C, and MAX voltage (VDD = 1.89 V; VDDIO, VDD3VFL, VDDA = 3.47 V). IDD represents the total current drawn from the 1.8-V rail (VDD). It includes a small amount of current (