TMS320LC548GGU-66

TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 D Advanced Multibus Architecture With Three D D D D D D D D D D D D D D Separate 16-Bit Data Memory Buses and One Program Memory Bus 40-Bit Arithmetic Logic Unit (ALU) Including a 40-Bit Barrel Shifter and Two Independent 40-Bit Accumulators 17-  17-Bit Parallel Multiplier Coupled to a 40-Bit Dedicated Adder for Non-Pipelined Single-Cycle Multiply/Accumulate (MAC) Operation Compare, Select, and Store Unit (CSSU) for the Add/Compare Selection of the Viterbi Operator Exponent Encoder to Compute an Exponent Value of a 40-Bit Accumulator Value in a Single Cycle Two Address Generators With Eight Auxiliary Registers and Two Auxiliary Register Arithmetic Units (ARAUs) Data Bus With a Bus Holder Feature Address Bus With a Bus Holder Feature Extended Addressing Mode for 8M  16-Bit Maximum Addressable External Program Space 192K  16-Bit Maximum Addressable Memory Space (64K Words Program, 64K Words Data, and 64K Words I/O) On-Chip ROM with Some Configurable to Program/Data Memory Dual-Access On-Chip RAM Single-Access On-Chip RAM Single-Instruction Repeat and Block-Repeat Operations for Program Code Block-Memory-Move Instructions for Better Program and Data Management D Instructions With a 32-Bit Long Word D D D D D D D D D D Operand Instructions With Two- or Three-Operand Reads Arithmetic Instructions With Parallel Store and Parallel Load Conditional Store Instructions Fast Return From Interrupt On-Chip Peripherals -- Software-Programmable Wait-State Generator and Programmable Bank Switching -- On-Chip Phase-Locked Loop (PLL) Clock Generator With Internal Oscillator or External Clock Source -- Time-Division Multiplexed (TDM) Serial Port -- Buffered Serial Port (BSP) -- 8-Bit Parallel Host Port Interface (HPI) -- One 16-Bit Timer -- External-Input/Output (XIO) Off Control to Disable the External Data Bus, Address Bus and Control Signals Power Consumption Control With IDLE1, IDLE2, and IDLE3 Instructions With Power-Down Modes CLKOUT Off Control to Disable CLKOUT On-Chip Scan-Based Emulation Logic, IEEE Std 1149.1† (JTAG) Boundary Scan Logic 15-ns Single-Cycle Fixed-Point Instruction Execution Time (66 MIPS) for 3.3-V Power Supply 12.5-ns Single-Cycle Fixed-Point Instruction Execution Time (80 MIPS) for 3.3-V Power Supply 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. All trademarks are the property of their respective owners. IEEE Standard 1149.1-1990 Standard-Test-Access Port and Boundary Scan Architecture. † Copyright  2000, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 1 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Table of Contents Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . 11 Recommended Operating Conditions . . . . . . . . . . . 11 Timing Parameter Symbology . . . . . . . . . . . . . . . . . . 12 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . 13 Divide-by-Two/Divide-by-Four Clock Option . . . . . . 15 Multiply-by-N Clock Option . . . . . . . . . . . . . . . . . . . . 17 Memory and Parallel I/O Interface Timing . . . . . . . . 19 Timing Requirements for a Memory Read . . . . . . . 20 I/O Timing Variation: SPICE Simulation . . . . . . . . . . 27 Timing for Externally Generated Wait States . . . . . HOLD and HOLDA Timings . . . . . . . . . . . . . . . . . . . . Reset, BIO, Interrupt, and MP/MC Timings . . . . . . . Serial Port Receive Timing . . . . . . . . . . . . . . . . . . . . Serial Port Transmit Timing . . . . . . . . . . . . . . . . . . . . Buffered Serial Port Receive Timing . . . . . . . . . . . . Buffered Serial Port Transmit Timing . . . . . . . . . . . . Serial-Port Receive Timing in TDM Mode . . . . . . . . Serial-Port Transmit Timing in TDM Mode . . . . . . . Host-Port Interface Timing . . . . . . . . . . . . . . . . . . . . . Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 35 37 41 42 44 45 48 50 52 59 description The TMS320LC548 fixed-point, digital signal processor (DSP) (hereafter referred to as the ’548) is based on an advanced modified Harvard architecture that has one program memory bus and three data memory buses. The processor also provides an arithmetic logic unit (ALU) that has a high degree of parallelism, application-specific hardware logic, on-chip memory, and additional on-chip peripherals. The ’548 also utilizes a highly specialized instruction set, which is the basis of its operational flexibility and speed. Separate program and data spaces allow simultaneous access to program instructions and data, providing the high degree of parallelism. Two reads and one write operation can be performed in a single cycle. Instructions with parallel store and application-specific instructions can fully utilize this architecture. In addition, data can be transferred between data and program spaces. Such parallelism supports a powerful set of arithmetic, logic, and bit-manipulation operations that can all be performed in a single machine cycle. In addition, the ’548 includes the control mechanisms to manage interrupts, repeated operations, and function calls. This data sheet contains the pin layouts, signal descriptions, and electrical specifications for the TMS320VC548 DSP. For additional information, see the TMS320C54x, TMS320LC54x, TMS320VC54x Fixed-Point Digital Signal Processors data sheet (literature number SPRS039). The SPRS039 is considered a family functional overview and should be used in conjunction with this data sheet. 2 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 109 111 110 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 75 35 74 36 73 A18 A17 VSS A16 D5 D4 D3 D2 D1 D0 RS X2/CLKIN X1 HD3 CLKOUT VSS HPIENA CVDD VSS TMS TCK TRST TDI TDO EMU1/OFF EMU0 TOUT HD2 TEST1 CLKMD3 CLKMD2 CLKMD1 VSS DVDD BDX1 BFSX1 VSS BCLKR1 HCNTL0 VSS BCLKR0 TCLKR BFSR0 TFSR/TADD BDR0 HCNTL1 TDR BCLKX0 TCLKX VSS HINT CVDD BFSX0 TFSX/TFRM HRDY DVDD VSS HD0 BDX0 TDX IACK HBIL NMI INT0 INT1 INT2 INT3 CVDD HD1 VSS BCLKX1 VSS 72 76 34 71 77 33 70 78 32 69 79 31 68 80 30 67 81 29 66 82 28 65 83 27 64 84 26 63 85 25 62 86 24 61 87 23 60 88 22 59 89 21 58 90 20 57 91 19 56 92 18 55 93 17 54 94 16 53 95 15 52 96 14 51 97 13 50 98 12 49 99 11 48 100 10 47 101 9 46 102 8 45 103 7 44 104 6 43 105 5 42 106 4 41 3 40 107 39 108 2 38 1 37 VSS A22 VSS DVDD A10 HD7 A11 A12 A13 A14 A15 CVDD HAS VSS VSS CVDD HCS HR/W READY PS DS IS R/W MSTRB IOSTRB MSC XF HOLDA IAQ HOLD BIO MP/MC DVDD VSS BDR1 BFSR1 143 144 V SS A21 CV DD A9 A8 A7 A6 A5 A4 HD6 A3 A2 A1 A0 DVDD HDS2 V SS HDS1 V SS CVDD HD5 D15 D14 D13 HD4 D12 D11 D10 D9 D8 D7 D6 DVDD VSS A20 A19 PGE PACKAGE†‡ (TOP VIEW) † ‡ NC = No connection DVDD is the power supply for the I/O pins while CVDD is the power supply for the core CPU, and VSS is the ground for both the I/O pins and the core CPU. The ’548 signal descriptions table lists each terminal name, function, and operating mode(s) for the 144-pin thin quad flatpack (TQFP). The letter B in front of CLKRn, FSRn, DRn, CLKXn, FSXn, and DXn pin names denotes buffered serial port (BSP), where n = 0 or 1 port. The letter T in front of CLKR, FSR, DR, CLKX, FSX, and DX pin names denotes time-division multiplexed (TDM) serial port. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 3 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 GGU PACKAGE (BOTTOM VIEW) 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H J K L M N The pin assignments table to follow lists each signal quadrant and BGA ball pin number for the 144-pin BGA package. The ’548 signal descriptions table lists each terminal name, function, and operating mode(s) for the TMS320LC548GGU. 4 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Pin Assignments for the 144-Pin BGA Package† † SIGNAL QUADRANT 1 BGA BALL # SIGNAL QUADRANT 2 BGA BALL # SIGNAL QUADRANT 3 BGA BALL # SIGNAL QUADRANT 4 BGA BALL # VSS A1 BFSX1 N13 VSS N1 A19 A13 A22 B1 BDX1 M13 BCLKR1 N2 A20 A12 VSS C2 DVDD L12 HCNTL0 M3 VSS B11 DVDD C1 VSS L13 VSS N3 DVDD A11 A10 D4 CLKMD1 K10 BCLKR0 K4 D6 D10 HD7 D3 CLKMD2 K11 TCLKR L4 D7 C10 A11 D2 CLKMD3 K12 BFSR0 M4 D8 B10 A12 D1 TEST1 K13 TFSR/TADD N4 D9 A10 A13 E4 HD2 J10 BDR0 K5 D10 D9 A14 E3 TOUT J11 HCNTL1 L5 D11 C9 B9 A15 E2 EMU0 J12 TDR M5 D12 CVDD E1 EMU1/OFF J13 BCLKX0 N5 HD4 A9 HAS F4 TDO H10 TCLKX K6 D13 D8 VSS F3 TDI H11 VSS L6 D14 C8 VSS F2 TRST H12 HINT M6 D15 B8 CVDD F1 TCK H13 CVDD N6 HD5 A8 HCS G2 TMS G12 BFSX0 M7 CVDD B7 HR/W G1 VSS G13 TFSX/TFRM N7 VSS A7 READY G3 CVDD G11 HRDY L7 HDS1 C7 PS G4 HPIENA G10 DVDD K7 VSS D7 DS H1 VSS F13 VSS N8 HDS2 A6 IS H2 CLKOUT F12 HD0 M8 DVDD B6 R/W H3 HD3 F11 BDX0 L8 A0 C6 MSTRB H4 X1 F10 TDX K8 A1 D6 IOSTRB J1 X2/CLKIN E13 IACK N9 A2 A5 MSC J2 RS E12 HBIL M9 A3 B5 XF J3 D0 E11 NMI L9 HD6 C5 HOLDA J4 D1 E10 INT0 K9 A4 D5 A4 IAQ K1 D2 D13 INT1 N10 A5 HOLD K2 D3 D12 INT2 M10 A6 B4 BIO K3 D4 D11 INT3 L10 A7 C4 MP/MC L1 D5 C13 CVDD N11 A8 A3 DVDD L2 A16 C12 HD1 M11 A9 B3 VSS L3 VSS C11 VSS L11 CVDD C3 BDR1 M1 A17 B13 BCLKX1 N12 A21 A2 BFSR1 M2 A18 B12 VSS M12 VSS B2 DVDD is the power supply for the I/O pins while CVDD is the power supply for the core CPU, and VSS is the ground for both the I/O pins and the core CPU. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 5 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Signal Descriptions TERMINAL NAME TYPE† DESCRIPTION DATA SIGNALS A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 (MSB) Parallel port address bus A22 (MSB) through A0 (LSB). The sixteen LSBs (A15--A0) are multiplexed to address external data/program memory or I/O. A15--A0 are placed in the high-impedance state in the hold mode. A15--A0 also go into the high-impedance state when EMU1/OFF is low. The seven MSBs (A22 to A16) are used for extended program memory addressing. The address bus have a feature called bus holder that eliminates passive components and the power dissipation associated with it. The bus holders keep the address bus at the previous logic level when the bus goes into a high-impedance state. The bus holders on the address bus are always enabled. O/Z (LSB) (MSB) I/O/Z Parallel port data bus D15 (MSB) through D0 (LSB). D15--D0 are multiplexed to transfer data between the core CPU and external data/program memory or I/O devices. D15--D0 are placed in the high-impedance state when not output or when RS or HOLD is asserted. D15--D0 also go into the high-impedance state when EMU1/OFF is low. The data bus has a feature called bus holder that eliminates passive components and the power dissipation associated with it. The bus holders keep the data bus at the previous logic level when the bus goes into a high-impedance state. These bus holders are enabled or disabled by the BH bit in the bank switching control register (BSCR). (LSB) INITIALIZATION, INTERRUPT AND RESET OPERATIONS IACK O/Z Interrupt acknowledge signal. IACK indicates the receipt of an interrupt and that the program counter is fetching the interrupt vector location designated by A15--0. IACK also goes into the high-impedance state when EMU1/OFF is low. INT0 INT1 INT2 INT3 I External user interrupt inputs. INT0--INT3 are prioritized and are maskable by the interrupt mask register and the interrupt mode bit. INT0 --INT3 can be polled and reset by the interrupt flag register. † 6 I = Input, O = Output, Z = High impedance POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Signal Descriptions (Continued) TERMINAL NAME TYPE† DESCRIPTION INITIALIZATION, INTERRUPT AND RESET OPERATIONS (CONTINUED) NMI I Nonmaskable interrupt. NMI is an external interrupt that cannot be masked by way of the INTM or the IMR. When NMI is activated, the processor traps to the appropriate vector location. RS I Reset input. RS causes the DSP to terminate execution and forces the program counter to 0FF80h. When RS is brought to a high level, execution begins at location 0FF80h of the program memory. RS affects various registers and status bits. MP/MC I Microprocessor/microcomputer mode-select pin. If active-low at reset (microcomputer mode), MP/MC causes the internal program ROM to be mapped into the upper program memory space. In the microprocessor mode, off-chip memory and its corresponding addresses (instead of internal program ROM) are accessed by the DSP. CNT I I/O level select. For 5-V operation, all input and output voltage levels are TTL-compatible when CNT is pulled down to a low level. For 3-V operation with CMOS-compatible I/O interface levels, CNT is pulled to a high level. MULTIPROCESSING SIGNALS I Branch control input. A branch can be conditionally executed when BIO is active. If low, the processor executes the conditional instruction. The BIO condition is sampled during the decode phase of the pipeline for the XC instruction, and all other instructions sample BIO during the read phase of the pipeline. O/Z External flag output (latched software-programmable signal). XF is set high by the SSBX XF instruction, set low by RSBX XF instruction or by loading the ST1 status register. XF is used for signaling other processors in multiprocessor configurations or as a general-purpose output pin. XF goes into the high-impedance state when OFF is low, and is set high at reset. DS PS IS O/Z Data, program, and I/O space select signals. DS, PS, and IS are always high unless driven low for communicating to a particular external space. Active period corresponds to valid address information. Placed into a high-impedance state in hold mode. DS, PS, and IS also go into the high-impedance state when EMU1/OFF is low. MSTRB O/Z Memory strobe signal. MSTRB is always high unless low-level asserted to indicate an external bus access to data or program memory. Placed in high-impedance state in hold mode. MSTRB also goes into the high-impedance state when OFF is low. READY I Data-ready input. READY indicates that an external device is prepared for a bus transaction to be completed. If the device is not ready (READY is low), the processor waits one cycle and checks READY again. Note that the processor performs ready-detection if at least two software wait states are programmed. The READY signal is not sampled until the completion of the software wait states. R/W O/Z Read/write signal. R/W indicates transfer direction during communication to an external device and is normally high (in read mode), unless asserted low when the DSP performs a write operation. Placed in the high-impedance state in hold mode, R/W also goes into the high-impedance state when EMU1/OFF is low. IOSTRB O/Z I/O strobe signal. IOSTRB is always high unless low level asserted to indicate an external bus access to an I/O device. Placed in high-impedance state in hold mode. IOSTRB also goes into the high-impedance state when EMU1/OFF is low. I Hold input. HOLD is asserted to request control of the address, data, and control lines. When acknowledged by the ’54x, these lines go into high-impedance state. O/Z Hold acknowledge signal. HOLDA indicates to the external circuitry that the processor is in a hold state and that the address, data, and control lines are in a high-impedance state, allowing them to be available to the external circuitry. HOLDA also goes into the high-impedance state when EMU1/OFF is low. O/Z Microstate complete signal. Goes low on CLKOUT falling at the start of the first software wait state. Remains low until one CLKOUT cycle before the last programmed software wait state. If connected to the READY line, MSC forces one external wait state after the last internal wait state has been completed. MSC also goes into the high-impedance state when EM1/OFF is low. BIO XF MEMORY CONTROL SIGNALS HOLD HOLDA MSC † I = Input, O = Output, Z = High impedance POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 7 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Signal Descriptions (Continued) TERMINAL NAME TYPE† DESCRIPTION MEMORY CONTROL SIGNALS (CONTINUED) IAQ O/Z Instruction acquisition signal. IAQ is asserted (active low) when there is an instruction address on the address bus and goes into the high-impedance state when EMU1/OFF is low. OSCILLATOR/TIMER SIGNALS CLKOUT O/Z Master clock output signal. CLKOUT cycles at the machine-cycle rate of the CPU. The internal machine cycle is bounded by the falling edges of this signal. CLKOUT also goes into the high-impedance state when EMU1/OFF is low. CLKMD1 CLKMD2 CLKMD3 I Clock mode external/internal input signals. CLKMD1, CLKMD2, and CLKMD3 allow you to select and configure different clock modes, such as crystal, external clock, and various PLL factors. Refer to PLL section for a detailed functional description of these pins. X2/CLKIN I Input pin to internal oscillator from the crystal. If the internal (crystal) oscillator is not being used, a clock can become input to the device using this pin. The internal machine cycle time is determined by the clock operating-mode pins (CLKMD1, CLKMD2 and CLKMD3). X1 O Output pin from the internal oscillator for the crystal. If the internal oscillator is not used, X1 should be left unconnected. X1 does not go into the high-impedance state when EMU1/OFF is low. O/Z Timer output. TOUT signals a pulse when the on-chip timer counts down past zero. The pulse is a CLKOUT-cycle wide. TOUT also goes into the high-impedance state when EMU1/OFF is low. I Receive clocks. External clock signal for clocking data from the data-receive (DR) pin into the buffered serial port receive shift registers (RSRs). Must be present during buffered serial port transfers. If the buffered serial port is not being used, BCLKR0 and BCLKR1 can be sampled as an input by way of IN0 bit of the SPC register. I/O/Z Transmit clock. Clock signal for clocking data from the serial port transmit shift register (XSR) to the data transmit (DX) pin. BCLKX can be an input if MCM in the serial port control register is cleared to 0. It also can be driven by the device at 1/(CLKDV + 1) where CLKDV range is 0--31 CLKOUT frequency when MCM is set to 1. If the buffered serial port is not used, BCLKX can be sampled as an input by way of IN1 of the SPC register. BCLKX0 and BCLKX1 go into the high-impedance state when OFF is low. TOUT BUFFERED SERIAL PORT 0 AND BUFFERED SERIAL PORT 1 SIGNALS BCLKR0 BCLKR1 BCLKX0 BCLKX1 BDR0 BDR1 I BDX0 BDX1 O/Z Buffered serial-port-transmit output. Serial data is transmitted from the XSR by way of BDX. BDX0 and BDX1 are placed in the high-impedance state when not transmitting and when EMU1/OFF is low. I Frame synchronization pulse for receive input. The falling edge of the BFSR pulse initiates the data-receive process, beginning the clocking of the RSR. I/O/Z Frame synchronization pulse for transmit input/output. The falling edge of the BFSX pulse initiates the data-transmit process, beginning the clocking of the XSR. Following reset, the default operating condition of BFSX is an input. BFSX0 and BFSX1 can be selected by software to be an output when TXM in the serial control register is set to 1. This pin goes into the high-impedance state when EMU1/OFF is low. BFSR0 BFSR1 BFSX0 BFSX1 Buffered serial-data-receive input. Serial data is received in the RSR by BDR0/BDR1. SERIAL PORT 0 AND SERIAL PORT 1 SIGNALS CLKR0 CLKR1 CLKX0 CLKX1 DR0 DR1 † 8 I Receive clocks. External clock signal for clocking data from the data receive (DR) pin into the serial port receive shift register (RSR). Must be present during serial port transfers. If the serial port is not being used, CLKR0 and CLKR1 can be sampled as an input via IN0 bit of the SPC register. I/O/Z Transmit clock. Clock signal for clocking data from the serial port transmit shift register (XSR) to the data transmit (DX) pin. CLKX can be an input if MCM in the serial port control register is cleared to 0. It also can be driven by the device at 1/4 CLKOUT frequency when MCM is set to 1. If the serial port is not used, CLKX can be sampled as an input via IN1 of the SPC register. CLKX0 and CLKX1 go into the high-impedance state when EMU1/OFF is low. I Serial-data-receive input. Serial data is received in the RSR by DR. I = Input, O = Output, Z = High impedance POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Signal Descriptions (Continued) TERMINAL NAME TYPE† DESCRIPTION SERIAL PORT 0 AND SERIAL PORT 1 SIGNALS (CONTINUED) DX0 DX1 O/Z Serial port transmit output. Serial data is transmitted from the XSR via DX. DX0 and DX1 are placed in the high-impedance state when not transmitting and when EMU1/OFF is low. FSR0 FSR1 I Frame synchronization pulse for receive input. The falling edge of the FSR pulse initiates the data-receive process, beginning the clocking of the RSR. FSX0 FSX1 I/O/Z Frame synchronization pulse for transmit input/output. The falling edge of the FSX pulse initiates the data transmit process, beginning the clocking of the XSR. Following reset, the default operating condition of FSX is an input. FSX0 and FSX1 can be selected by software to be an output when TXM in the serial control register is set to 1. This pin goes into the high-impedance state when EMU1/OFF is low. TDM SERIAL PORT SIGNALS TCLKR TDR TFSR/TADD TCLKX I TDM receive clock input I TDM serial data-receive input I/O TDM receive frame synchronization or TDM address I/O/Z TDM transmit clock TDX O/Z TDM serial data-transmit output TFSX/TFRM I/O/Z TDM transmit frame synchronization I/O/Z Parallel bidirectional data bus. HD0--HD7 are placed in the high-impedance state when not outputting data. The signals go into the high-impedance state when EMU1/OFF is low. These pins each have bus holders similar to those on the address/data bus, but which are always enabled. HOST PORT INTERFACE SIGNALS HD0--HD7 HCNTL0 HCNTL1 I Control inputs HBIL I Byte-identification input HCS I Chip-select input HDS1 HDS2 I Data strobe inputs HAS I Address strobe input HR/W I Read/write input HRDY O/Z Ready output. This signal goes into the high-impedance state when EMU1/OFF is low. HINT O/Z Interrupt output. When the DSP is in reset, this signal is driven high. The signal goes into the high-impedance state when EMU1/OFF is low. I HPI module select input. This signal must be tied to a logic 1 state to have HPI selected. If this input is left open or connected to ground, the HPI module will not be selected, internal pullup for the HPI input pins are enabled, and the HPI data bus has keepers set. This input is provided with an internal pull-down resistor which is active only when RS is low. HPIENA is sampled when RS goes high and ignored until RS goes low again. Refer to the Electrical Characteristics section for the input current requirements for this pin. HPIENA SUPPLY PINS CVDD Supply +VDD. CVDD is the dedicated power supply for the core CPU. DVDD Supply +VDD. DVDD is the dedicated power supply for I/O pins. VSS Supply Ground. VSS is the dedicated power ground for the device. † I = Input, O = Output, Z = High impedance POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 9 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 Signal Descriptions (Continued) TERMINAL NAME TYPE† DESCRIPTION IEEE1149.1 TEST PINS TCK I IEEE standard 1149.1 test clock. Pin with internal pullup device. This is normally a free-running clock signal with a 50% duty cycle. The changes on the test-access port (TAP) of input signals TMS and TDI are clocked into the TAP controller, instruction register, or selected test data register on the rising edge of TCK. Changes at the TAP output signal (TDO) occur on the falling edge of TCK. TDI I IEEE standard 1149.1 test data input. Pin with internal pullup device. TDI is clocked into the selected register (instruction or data) on a rising edge of TCK. TDO O/Z IEEE standard 1149.1 test data output. The contents of the selected register (instruction or data) is shifted out of TDO on the falling edge of TCK. TDO is in the high-impedance state except when the scanning of data is in progress. TDO also goes into the high-impedance state when EMU1/OFF is low. TMS I IEEE standard 1149.1 test mode select. Pin with internal pullup device. This serial control input is clocked into the TAP controller on the rising edge of TCK. TRST I IEEE standard 1149.1 test reset. TRST, when high, gives the IEEE standard 1149.1 scan system control of the operations of the device. If TRST is not connected or driven low, the device operates in its functional mode, and the IEEE standard 1149.1 signals are ignored. Pin with internal pulldown device. EMU0 I/O/Z Emulator interrupt 0 pin. When TRST is driven low, EMU0 must be high for the activation of the EMU1/OFF condition. When TRST is driven high, EMU0 is used as an interrupt to or from the emulator system and is defined as input/output by way of IEEE standard 1149.1 scan system. I/O/Z Emulator interrupt 1 pin/disable all outputs. When TRST is driven high, EMU1/OFF is used as an interrupt to or from the emulator system and is defined as input/output by way of IEEE standard 1149.1 scan system. When TRST is driven low, EMU1/OFF is configured as OFF. The EMU1/OFF signal, when active low, puts all output drivers into the high-impedance state. Note that OFF is used exclusively for testing and emulation purposes (not for multiprocessing applications). Therefore, for the OFF condition, the following conditions apply: TRST = low, EMU0 = high EMU1/OFF = low EMU1/OFF DEVICE TEST PIN TEST1 † 10 I Test1 -- Reserved for internal use only. This pin must not be connected (NC). I = Input, O = Output, Z = High impedance POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 absolute maximum ratings over specified temperature range (unless otherwise noted)† Supply voltage, DVDD‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 4.6 V Input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 4.6 V Output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 4.6 V Operating case temperature range, TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --40C to 100C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --55C to 150C † 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 “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 V . SS recommended operating conditions DVDD Device supply voltage VSS Supply voltage, GND VIH High-level High level input voltage NOM MAX 3 3.3 3.6 0 Schmitt trigger inputs, DVDD = 3.30.3 V§ All other inputs § MIN V V 2.5 DVDD + 0.3 2 DVDD + 0.3 --0.3 UNIT VIL Low-level input voltage IOH High-level output current --300 A IOL Low-level output current 1.5 mA TC Operating case temperature 100 C --40 0.8 V V The following pins have schmitt trigger inputs: RS, INTn, NMI, and CLKMDn Refer to Figure 1 for 3.3-V device test load circuit values. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 11 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 PARAMETER MEASUREMENT INFORMATION timing parameter symbology Timing parameter symbols used are created in accordance with JEDEC Standard 100-A. To shorten the symbols, some of the pin names and other related terminology have been abbreviated as follows: Lowercase subscripts and their meanings: Letters and symbols and their meanings: a access time H High c cycle time (period) L Low d delay time V Valid dis disable time Z High impedance en enable time f fall time h hold time r rise time su setup time t transition time v valid time w pulse duration (width) X Unknown, changing, or don’t care level signal transition reference points All timing references are made at a voltage of 1.5 volts, except rise and fall times which are referenced at the 10% and 90% points of the specified low and high logic levels, respectively. IOL 50  Tester Pin Electronics VLoad CT IOH Where: IOL IOH VLoad CT = = = = 1.5 mA (all outputs) 300 A (all outputs) 1.5 V 40 pF typical load circuit capacitance. Figure 1. 3.3-V Test Load Circuit 12 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 Output Under Test TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 electrical characteristics and operating conditions electrical characteristics over recommended operating case temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VOH High-level output voltage‡ VDD = 3.30.3 V, VOL Low-level output voltage‡ IOL = MAX IIZ Input current in high impedance II Input p current (VI = VSS to VDD) Input current (VI = VSS to VDD) A[22:0] VDD = MAXk All other pins IOH = MAX MIN TYP† MAX 2.4 V 0.4 --150 250 VDD = MAX, VI = VSS to VDD --10 10 TRST With internal pulldown --10 800 HPIENA With internal pulldown, RS = 0 --10 400 TMS, TCK, TDI, HPI|| With internal pullups --400 10 D[15:0], HD[7:0] Bus holders enabled, VDD = MAXk --150 250 All other input-only pins UNIT --10 V A A 10 IDDC Supply current, core CPU VDD = 3.3 V, fx = 40 MHz,§ TC = 25C IDDP Supply current, pins DVDD = 3.3 V, fx = 40 MHz,§ TC = 25C IDD Supply current, standby Ci Input capacitance Co Output capacitance 10 pF IDLE2 PLL  1 mode, 40 MHz input IDLE3 Divide-by-two mode, CLKIN stopped 28¶ mA 10.8# mA 2 mA 5 A 10 pF † All values are typical unless otherwise specified. All input and output voltage levels except RS, INT0--INT3, NMI, CNT, X2/CLKIN, CLKMD0--CLKMD3 are LVTTL-compatible. § Clock mode: PLL  1 with external source ¶ This value was obtained with 50% usage of MAC and 50% usage of NOP instructions. Actual operating current varies with program being executed. # This value was obtained with single-cycle external writes, CLKOFF = 0 and load = 15 pF. For more details on how this calculation is performed, refer to the Calculation of TMS320C54x Power Dissipation application report (literature number SPRA164). || HPI input signals except for HPIENA. k VIL(MIN)  VI  VIL(MAX) or VIH(MIN)  VI  VIH(MAX) ‡ POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 13 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 internal oscillator with external crystal The internal oscillator is enabled by selecting the appropriate clock mode at reset (this is device-dependent -see PLL section) and connecting a crystal or ceramic resonator across X1 and X2/CLKIN. The CPU clock frequency is one-half the crystal’s oscillation frequency following reset. After reset, the clock mode of the devices with the software PLL can also be changed to divide-by-four. Since the internal oscillator can be used as a clock source to the PLL, the crystal oscillation frequency can be multiplied to generate the CPU clock if desired. The crystal should be in fundamental mode operation and parallel resonant with an effective series resistance of 30ohms and power dissipation of 1 mW. The connection of the required circuit, consisting of the crystal and two load capacitors, is shown in Figure 2. The load capacitors, C1 and C2, should be chosen such that the equation below is satisfied. CL in the equation is the load specified for the crystal. CL = C 1C 2 (C 1 + C 2) recommended operating conditions (see Figure 2) ’548-66 MIN fx NOM 10† Input clock frequency ’548-80 MAX MIN 20‡ 10† NOM † MAX 20‡ UNIT MHz This device utilizes a fully static design and therefore can operate with tc(CI) approaching . The device is characterized at frequencies approaching 0 Hz. ‡ It is recommended that the PLL clocking option be used for maximum frequency operation. X1 X2/CLKIN Crystal C1 C2 Figure 2. Internal Divide-by-Two Clock Option With External Crystal 14 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 divide-by-two/divide-by-four clock option -- PLL disabled The frequency of the reference clock provided at the X2/CLKIN pin can be divided by a factor of two or four to generate the internal machine cycle. The selection of the clock mode is described in the clock generator section. When an external clock source is used, the frequency injected must conform to specifications listed in the timing requirements table. switching characteristics over recommended operating conditions [H = 0.5tc(CO)] (see Figure 2 and Figure 3, and the recommended operating conditions table) ’548-66 PARAMETER MIN TYP 15‡ 2tc(CI) 4 10 ’548-80 UNIT MAX MIN TYP MAX † 12.5‡ 2tc(CI) † ns 16 4 10 16 ns tc(CO) Cycle time, CLKOUT td(CIH-CO) Delay time, X2/CLKIN high to CLKOUT high/low tf(CO) Fall time, CLKOUT† 2 2 ns tr(CO) Rise time, CLKOUT† 2 2 ns low† tw(COL) Pulse duration, CLKOUT tw(COH) Pulse duration, CLKOUT high† H--4 H--2 H H--3 H--1 H ns H--4 H--2 H H--3 H--1 H ns † This device utilizes a fully static design and therefore can operate with tc(CI) approaching . The device is characterized at frequencies approaching 0 Hz. ‡ It is recommended that the PLL clocking option be used for maximum frequency operation. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 15 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 divide-by-two/divide-by-four clock option -- PLL disabled (continued) timing requirements (see Figure 3) ’548-66 ’548-80 UNIT MIN MAX MIN MAX 20‡ † 20‡ † ns tc(CI) Cycle time, X2/CLKIN tf(CI) Fall time, X2/CLKIN 4 2 ns tr(CI) Rise time, X2/CLKIN 4 2 ns tw(CIL) Pulse duration, X2/CLKIN low 5 † 5 † ns tw(CIH) Pulse duration, X2/CLKIN high 5 † 5 † ns † This device utilizes a fully static design and therefore can operate with tc(CI) approaching . The device is characterized at frequencies approaching 0 Hz. ‡ It is recommended that the PLL clocking option be used for maximum frequency operation. tr(CI) tw(CIH) tc(CI) tf(CI) X2/CLKIN tw(CIL) tw(COH) tf(CO) tc(CO) tr(CO) td(CIH-CO) CLKOUT Figure 3. External Divide-by-Two Clock Timing 16 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 tw(COL) TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 multiply-by-N clock option -- PLL enabled The frequency of the reference clock provided at the X2/CLKIN pin can be multiplied by a factor of N to generate the internal machine cycle. The selection of the clock mode and the value of N is described in the clock generator section. When an external clock source is used, the frequency injected must conform to specifications listed in the timing requirements table. switching characteristics over recommended operating conditions [H = 0.5tc(CO)] (see Figure 2 and Figure 4, and the recommended operating conditions table) ’548-66 PARAMETER MIN TYP 15 tc(CI)/N 4 10 ’548-80 MAX MIN TYP 12.5 tc(CI)/N 4 10 MAX UNIT tc(CO) Cycle time, CLKOUT td(CIH-CO) Delay time, X2/CLKIN high/low to CLKOUT high/low tf(CO) Fall time, CLKOUT 2 2 ns tr(CO) Rise time, CLKOUT 2 2 ns tw(COL) Pulse duration, CLKOUT low H--4 H--2 H H--3 H--1 H ns tw(COH) Pulse duration, CLKOUT high H--4 H--2 H H--3 H--1 H ns tp Transitory phase, PLL lock-up time 29 ms POST OFFICE BOX 1443 16 50  HOUSTON, TEXAS 77251--1443 ns 16 ns 17 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 multiply-by-N clock option -- PLL enabled (continued) timing requirements (see Figure 4) ’548-66 tc(CI) Cycle time, X2/CLKIN MIN MAX MIN MAX Integer PLL multiplier N (N = 1--15) 20† 400 20† 400 PLL multiplier N = x.5 20† 200 20† 200 100 20† 100 20† PLL multiplier N = x.25, x.75 † ’548-80 4 UNIT ns tf(CI) Fall time, X2/CLKIN tr(CI) Rise time, X2/CLKIN tw(CIL) Pulse duration, X2/CLKIN low 5 5 ns tw(CIH) Pulse duration, X2/CLKIN high 5 5 ns 4 Note that for all values of tc(CI), the minimum tc(CO) period must not be exceeded. tw(CIH) tw(CIL) tf(CI) tr(CI) tc(CI) X2/CLKIN td(CIH-CO) tc(CO) tw(COH) tw(COL) tp CLKOUT Unstable Figure 4. External Multiply-by-One Clock Timing 18 POST OFFICE BOX 1443 tf(CO)  HOUSTON, TEXAS 77251--1443 tr(CO) 2 ns 2 ns TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing switching characteristics over recommended operating conditions for a memory read (MSTRB = 0)†‡ (see Figure 5) ’548-66 PARAMETER td(CLKL-A) Delay time, address valid from CLKOUT low§ td(CLKH-A) Delay time, address valid from CLKOUT high td(CLKL-MSL) Delay time, MSTRB low from CLKOUT low td(CLKL-MSH) Delay time, MSTRB high from CLKOUT low (transition)¶ low§ th(CLKL-A)R Hold time, address valid after CLKOUT th(CLKH-A)R Hold time, address valid after CLKOUT high¶ ’548-80 UNIT MIN MAX MIN MAX 0 5 0 6 ns -- 2 3 0 5 ns 0 5 0 6 ns -- 2 3 0 5 ns 0 5 0 6 ns -- 2 3 0 5 ns † Address, PS, and DS timings are all included in timings referenced as address. See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. § In the case of a memory read preceded by a memory read ¶ In the case of a memory read preceded by a memory write ‡ POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 19 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) timing requirements for a memory read (MSTRB = 0) [H = 0.5 tc(CO)]†‡ (see Figure 5) ’548-66 MIN † ‡ MAX ’548-80 MIN MAX UNIT ta(A)M Access time, read data access from address valid 2H--10 2H--7.5 ns ta(MSTRBL) Access time, read data access from MSTRB low 2H--10 2H--7.5 ns tsu(D)R Setup time, read data before CLKOUT low 5 5 ns th(D)R Hold time, read data after CLKOUT low 2 2 ns th(A-D)R Hold time, read data after address invalid 1 1 ns th(D)MSTRBH Hold time, read data after MSTRB high 0 0 ns Address, PS, and DS timings are all included in timings referenced as address. See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. 20 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) CLKOUT td(CLKL-A) th(CLKL-A)R A[15:0] th(A-D)R tsu(D)R ta(A)M th(D)R D[15:0] th(D)MSTRBH td(CLKL-MSL) td(CLKL-MSH) ta(MSTRBL) MSTRB R/W PS, DS Figure 5. Memory Read (MSTRB = 0) POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 21 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) switching characteristics over recommended operating conditions for a memory write (MSTRB = 0) [H = 0.5 tc(CO)]†‡ (see Figure 6) ’548-66 PARAMETER td(CLKH-A) Delay time, address valid from CLKOUT high§ low¶ ’548-80 UNIT MIN MAX MIN MAX -- 2 3 0 5 ns td(CLKL-A) Delay time, address valid from CLKOUT 0 5 0 6 ns td(CLKL-MSL) Delay time, MSTRB low from CLKOUT low 0 5 0 6 ns td(CLKL-D)W Delay time, data valid from CLKOUT low 0 6 0 7 ns td(CLKL-MSH) Delay time, MSTRB high from CLKOUT low -- 2 3 0 5 ns td(CLKH-RWL) Delay time, R/W low from CLKOUT high -- 2 3 -- 1 4 ns td(CLKH-RWH) Delay time, R/W high from CLKOUT high td(RWL-MSTRBL) Delay time, MSTRB low after R/W low th(A)W Hold time, address valid after CLKOUT high§ th(D)MSH Hold time, write data valid after MSTRB high tw(SL)MS Pulse duration, MSTRB low tsu(A)W Setup time, address valid before MSTRB low tsu(D)MSH Setup time, write data valid before MSTRB high -- 1 4 ns H -- 2 H+2 ns 0 5 -- 1 5 ns H--4 H+4¶ ns H--5 Address, PS, and DS timings are all included in timings referenced as address. See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. § In the case of a memory write preceded by a memory write. ¶ In the case of a memory write preceded by an I/O cycle. ‡ POST OFFICE BOX 1443 3 H+3 H+5¶ 2H--5 † 22 -- 2 H -- 2  HOUSTON, TEXAS 77251--1443 2H--5 2H--5 2H--10 ns 2H--5 2H+8§ 2H--7 ns 2H+7¶ ns TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) CLKOUT td(CLKH-A) td(CLKL-A) th(A)W A[15:0] td(CLKL-D)W th(D)MSH tsu(D)MSH D[15:0] td(CLKL-MSL) td(CLKL-MSH) tsu(A)W MSTRB td(CLKH-RWL) td(CLKH-RWH) tw(SL)MS td(RWL-MSTRBL) R/W PS, DS Figure 6. Memory Write (MSTRB = 0) POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 23 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) switching characteristics over recommended operating conditions for a parallel I/O port read (IOSTRB = 0)†‡ (see Figure 7) ’548-66 PARAMETER † ‡ ’548-80 MIN MAX MIN MAX UNIT td(CLKL-A) Delay time, address valid from CLKOUT low 0 5 0 6 ns td(CLKH-ISTRBL) Delay time, IOSTRB low from CLKOUT high -- 2 3 -- 1 4 ns td(CLKH-ISTRBH) Delay time, IOSTRB high from CLKOUT high -- 2 3 -- 1 4 ns th(A)IOR Hold time, address after CLKOUT low 0 5 0 6 ns Address and IS timings are included in timings referenced as address. See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. 24 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) timing requirements for a parallel I/O port read (IOSTRB = 0) [H = 0.5 tc(CO)]†‡ (see Figure 7) ’548-66 MIN † ‡ MAX ’548-80 MIN MAX UNIT ta(A)IO Access time, read data access from address valid 3H--10 3H--5 ns ta(ISTRBL)IO Access time, read data access from IOSTRB low 2H--10 2H--5 ns tsu(D)IOR Setup time, read data before CLKOUT high 5 4 ns th(D)IOR Hold time, read data after CLKOUT high 2 2 ns th(ISTRBH-D)R Hold time, read data after IOSTRB high 0 0 ns Address and IS timings are included in timings referenced as address. See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. CLKOUT th(A)IOR td(CLKL-A) A[15:0] tsu(D)IOR ta(A)IO th(D)IOR D[15:0] ta(ISTRBL)IO td(CLKH-ISTRBL) th(ISTRBH-D)R td(CLKH-ISTRBH) IOSTRB R/W IS Figure 7. Parallel I/O Port Read (IOSTRB = 0) POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 25 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) switching characteristics over recommended operating conditions for a parallel I/O port write (IOSTRB = 0) [H = 0.5 tc(CO)] (see Figure 8)† ’548-66 PARAMETER † ‡ td(CLKL-A) Delay time, address valid from CLKOUT low‡ td(CLKH-ISTRBL) Delay time, IOSTRB low from CLKOUT high td(CLKH-D)IOW Delay time, write data valid from CLKOUT high td(CLKH-ISTRBH) Delay time, IOSTRB high from CLKOUT high td(CLKL-RWL) Delay time, R/W low from CLKOUT low td(CLKL-RWH) Delay time, R/W high from CLKOUT low low‡ ’548-80 UNIT MIN MAX MIN MAX 0 5 0 6 ns -- 2 3 -- 1 4 ns H--5 H+8 H--5 H+6 ns -- 2 3 -- 1 4 ns 0 5 0 4 ns -- 2 3 0 5 ns 0 5 0 6 ns th(A)IOW Hold time, address valid from CLKOUT th(D)IOW Hold time, write data after IOSTRB high H--5 H+5 H--4 H+4 ns tsu(D)IOSTRBH Setup time, write data before IOSTRB high H--5 H H--4 H+1 ns tsu(A)IOSTRBL Setup time, address valid before IOSTRB low H--5 H+5 H--5 H+5 ns See Table 1, Table 2, and Table 3 for address bus timing variation with load capacitance. Address and IS timings are included in timings referenced as address. 26 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 memory and parallel I/O interface timing (continued) CLKOUT tsu(A)IOSTRBL td(CLKL-A) th(A)IOW A[15:0] td(CLKH-D)IOW th(D)IOW D[15:0] td(CLKH-ISTRBL) td(CLKH-ISTRBH) tsu(D)IOSTRBH IOSTRB td(CLKL-RWH) td(CLKL-RWL) R/W IS Figure 8. Parallel I/O Port Write (IOSTRB = 0) I/O timing variation with load capacitance: SPICE simulation results Condition: Temperature Capacitance Voltage Model : 125 C : 0--100pF : 2.7/3.0/3.3 V : Weak/Nominal/Strong 90% 10% Figure 9. Rise and Fall Time Diagram POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 27 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 I/O timing variation with load capacitance: SPICE simulation results (continued) Table 1. Timing Variation With Load Capacitance: [2.7 V] 10% -- 90% WEAK NOMINAL STRONG RISE FALL RISE FALL RISE FALL 0 pF 0.476 ns 0.457 ns 0.429 ns 0.391 ns 0.382 ns 0.323 ns 10 pF 1.511 ns 1.278 ns 1.386 ns 1.148 ns 1.215 ns 1.049 ns 20 pF 2.551 ns 2.133 ns 2.350 ns 1.956 ns 2.074 ns 1.779 ns 30 pF 3.614 ns 3.011 ns 3.327 ns 2.762 ns 2.929 ns 2.512 ns 40 pF 4.664 ns 3.899 ns 4.394 ns 3.566 ns 3.798 ns 3.264 ns 50 pF 5.752 ns 4.786 ns 5.273 ns 4.395 ns 4.655 ns 4.010 ns 60 pF 6.789 ns 5.656 ns 6.273 ns 5.206 ns 5.515 ns 4.750 ns 70 pF 7.817 ns 6.598 ns 7.241 ns 6.000 ns 6.442 ns 5.487 ns 80 pF 8.897 ns 7.531 ns 8.278 ns 6.928 ns 7.262 ns 6.317 ns 90 pF 10.021 ns 8.332 ns 9.152 ns 7.735 ns 8.130 ns 7.066 ns 100 pF 11.072 ns 9.299 ns 10.208 ns 8.537 ns 8.997 ns 7.754 ns Table 2. Timing Variation With Load Capacitance: [3 V] 10% -- 90% WEAK 28 NOMINAL STRONG RISE FALL RISE FALL RISE FALL 0 pF 0.436 ns 0.387 ns 0.398 ns 0.350 ns 0.345 ns 0.290 ns 10 pF 1.349 ns 1.185 ns 1.240 ns 1.064 ns 1.092 ns 0.964 ns 20 pF 2.273 ns 1.966 ns 2.098 ns 1.794 ns 1.861 ns 1.634 ns 30 pF 3.226 ns 2.765 ns 2.974 ns 2.539 ns 2.637 ns 2.324 ns 40 pF 4.168 ns 3.573 ns 3.849 ns 3.292 ns 3.406 ns 3.013 ns 50 pF 5.110 ns 4.377 ns 4.732 ns 4.052 ns 4.194 ns 3.710 ns 60 pF 6.033 ns 5.230 ns 5.660 ns 4.811 ns 5.005 ns 4.401 ns 70 pF 7.077 ns 5.997 ns 6.524 ns 5.601 ns 5.746 ns 5.117 ns 80 pF 8.020 ns 6.899 ns 7.416 ns 6.336 ns 6.559 ns 5.861 ns 90 pF 8.917 ns 7.709 ns 8.218 ns 7.124 ns 7.323 ns 6.498 ns 100 pF 9.885 ns 8.541 ns 9.141 ns 7.830 ns 8.101 ns 7.238 ns POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 I/O timing variation with load capacitance: SPICE simulation results (continued) Table 3. Timing Variation With Load Capacitance: [3.3 V] 10% -- 90% [3 V] 10% -- 90% WEAK NOMINAL STRONG RISE FALL RISE FALL RISE FALL 0 pF 0.404 ns 0.361 ns 0.371 ns 0.310 ns 0.321 ns 0.284 ns 10 pF 1.227 ns 1.081 ns 1.133 ns 1.001 ns 1.000 ns 0.892 ns 20 pF 2.070 ns 1.822 ns 1.915 ns 1.675 ns 1.704 ns 1.530 ns 30 pF 2.931 ns 2.567 ns 2.719 ns 2.367 ns 2.414 ns 2.169 ns 40 pF 3.777 ns 3.322 ns 3.515 ns 3.072 ns 3.120 ns 2.823 ns 50 pF 4.646 ns 4.091 ns 4.319 ns 3.779 ns 3.842 ns 3.466 ns 60 pF 5.487 ns 4.859 ns 5.145 ns 4.503 ns 4.571 ns 4.142 ns 70 pF 6.405 ns 5.608 ns 5.980 ns 5.234 ns 5.301 ns 4.767 ns 80 pF 7.284 ns 6.463 ns 6.723 ns 5.873 ns 5.941 ns 5.446 ns 90 pF 8.159 ns 7.097 ns 7.560 ns 6.692 ns 6.740 ns 6.146 ns 100 pF 8.994 ns 7.935 ns 8.300 ns 7.307 ns 7.431 ns 6.822 ns POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 29 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 ready timing for externally generated wait states timing requirements for externally generated wait states [H = 0.5 tc(CO)]† (see Figure 10, Figure 11, Figure 12, and Figure 13) ’548-66 MIN tsu(RDY) Setup time, READY before CLKOUT low 7 th(RDY) Hold time, READY after CLKOUT low 0 tv(RDY)MSTRB Valid time, READY after MSTRB low‡ th(RDY)MSTRB Hold time, READY after MSTRB low‡ Valid time, READY after IOSTRB th(RDY)IOSTRB Hold time, READY after IOSTRB low‡ tv(MSCL) Valid time, MSC low after CLKOUT low tv(MSCH) Valid time, MSC high after CLKOUT low MIN ns 4H--10 4H 5H--10 5H UNIT ns 0 4H † MAX 6 4H--10 low‡ tv(RDY)IOSTRB ’548-80 MAX ns ns 5H--10 5H ns ns 0 5 0 4 ns -- 2 3 0 4 ns The hardware wait states can be used only in conjunction with the software wait states to extend the bus cycles. To generate wait states by READY, at least two software wait states must be programmed. READY is not sampled until the completion of the internal software wait states. ‡ These timings are included for reference only. The critical timings for READY are those referenced to CLKOUT. 30 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 ready timing for externally generated wait states (continued) CLKOUT A[15:0] tsu(RDY) th(RDY) READY tv(RDY)MSTRB th(RDY)MSTRB MSTRB tv(MSCH) tv(MSCL) MSC Wait States Generated Internally Wait State Generated by READY Figure 10. Memory Read With Externally Generated Wait States POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 31 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 ready timing for externally generated wait states (continued) CLKOUT A[15:0] D[15:0] th(RDY) tsu(RDY) READY tv(RDY)MSTRB th(RDY)MSTRB MSTRB tv(MSCH) tv(MSCL) MSC Wait States Generated Internally Wait State Generated by READY Figure 11. Memory Write With Externally Generated Wait States 32 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 ready timing for externally generated wait states (continued) CLKOUT A[15:0] th(RDY) tsu(RDY) READY tv(RDY)IOSTRB IOSTRB th(RDY)IOSTRB tv(MSCH) tv(MSCL) MSC Wait States Generated Internally Wait State Generated by READY Figure 12. I/O Read With Externally Generated Wait States POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 33 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 ready timing for externally generated wait states (continued) CLKOUT A[15:0] D[15:0] th(RDY) tsu(RDY) READY tv(RDY)IOSTRB th(RDY)IOSTRB IOSTRB tv(MSCH) tv(MSCL) MSC Wait States Generated Internally Figure 13. I/O Write With Externally Generated Wait States 34 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 Wait State Generated by READY TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 HOLD and HOLDA timings switching characteristics over recommended operating conditions for memory control signals and HOLDA [H = 0.5 tc(CO)] (see Figure 14) ’548-66 PARAMETER MIN ’548-80 MAX MIN MAX UNIT tdis(CLKL-A) Disable time, CLKOUT low to address, PS, DS, IS high impedance 5 5 ns tdis(CLKL-RW) Disable time, CLKOUT low to R/W high impedance 5 5 ns tdis(CLKL-S) Disable time, CLKOUT low to MSTRB, IOSTRB high impedance 5 5 ns ten(CLKL-A) Enable time, CLKOUT low to address, PS, DS, IS 2H+5 2H+5 ns ten(CLKL-RW) Enable time, CLKOUT low to R/W enabled 2H+5 2H+5 ns ten(CLKL-S) Enable time, CLKOUT low to MSTRB, IOSTRB enabled 2H+5 2 2H+5 ns 0 5 0 5 ns -- 2 3 0 4 ns tv(HOLDA) tw(HOLDA) Valid time, HOLDA low after CLKOUT low Valid time, HOLDA high after CLKOUT low Pulse duration, HOLDA low duration 2H--3 2H--3 ns timing requirements for HOLD [H = 0.5 tc(CO)] (see Figure 14) ’548-66 MIN tw(HOLD) Pulse duration, HOLD low duration tsu(HOLD) Setup time, HOLD before CLKOUT low POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 MAX ’548-80 MIN MAX UNIT 4H+10 4H+10 ns 10 10 ns 35 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 HOLD and HOLDA timings (continued) CLKOUT tsu(HOLD) tsu(HOLD) tw(HOLD) HOLD tv(HOLDA) HOLDA tv(HOLDA) tw(HOLDA) tdis(CLKL-A) ten(CLKL-A) A[15:0] PS, DS, IS D[15:0] tdis(CLKL-RW) ten(CLKL-RW) tdis(CLKL-S) ten(CLKL-S) tdis(CLKL-S) ten(CLKL-S) R/W MSTRB IOSTRB Figure 14. HOLD and HOLDA Timing (HM = 1) 36 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 reset, BIO, interrupt, and MP/MC timings timing requirements for reset, interrupt, BIO, and MP/MC [H = 0.5 tc(CO)] (see Figure 15, Figure 16, and Figure 17) ’548-66 MIN ’548-80 MAX MIN MAX UNIT th(RS) Hold time, RS after CLKOUT low 0 0 ns th(BIO) Hold time, BIO after CLKOUT low 0 0 ns th(INT) Hold time, INTn, NMI, after CLKOUT low† 0 0 ns th(MPMC) Hold time, MP/MC after CLKOUT low 0 0 ns 4H+10 4H+7 ns 2H+10 2H+7 ns low‡§¶ tw(RSL) Pulse duration, RS tw(BIO)S Pulse duration, BIO low, synchronous tw(BIO)A Pulse duration, BIO low, asynchronous tw(INTH)S Pulse duration, INTn, NMI high (synchronous) 2H+10 tw(INTH)A Pulse duration, INTn, NMI high (asynchronous) 4H tw(INTL)S Pulse duration, INTn, NMI low (synchronous) 2H+10 tw(INTL)A Pulse duration, INTn, NMI low (asynchronous) 4H tw(INTL)WKP Pulse duration, INTn, NMI low for IDLE2/IDLE3 wakeup 10 4H low§ 5 4H ns 2H+7 ns 4H ns 2H+7 ns 4H ns 10 ns tsu(RS) Setup time, RS before X2/CLKIN tsu(BIO) Setup time, BIO before CLKOUT low 10 2H 10 5 2H ns tsu(INT) Setup time, INTn, NMI, RS before CLKOUT low 10 2H 10 2H ns tsu(MPMC) Setup time, MP/MC before CLKOUT low 10 10 ns ns † The external interrupts (INT0--INT3, NMI) are synchronized to the core CPU by way of a two flip-flop synchronizer which samples these inputs with consecutive falling edges of CLKOUT. The input to the interrupt pins is required to represent a 1--0--0 sequence at the timing that is corresponding to three CLKOUTs sampling sequence. ‡ If the PLL mode is selected, then at power-on sequence, or at wakeup from IDLE3, RS must be held low for at least 50 s to assure synchronization and lock-in of the PLL. § Divide-by-two mode ¶ Note that RS may cause a change in clock frequency, therefore changing the value of H (see the PLL section). POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 37 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 reset, BIO, interrupt, and MP/MC timings (continued) X2/CLKIN tsu(RS) tw(RSL) RS, INTn, NMI tsu(INT) th(RS) CLKOUT tsu(BIO) th(BIO) BIO tw(BIO)S Figure 15. Reset and BIO Timings CLKOUT tsu(INT) tsu(INT) th(INT) INTn, NMI tw(INTH)A tw(INTL)A Figure 16. Interrupt Timing CLKOUT RS th(MPMC) tsu(MPMC) MP/MC Figure 17. MP/MC Timing 38 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 instruction acquisition (IAQ), interrupt acknowledge (IACK), external flag (XF), and TOUT timings switching characteristics over recommended operating conditions for IAQ and IACK [H = 0.5 tc(CO)] (see Figure 18) PARAMETER ’548-66 ’548-80 MIN MAX MIN MAX 0 5 0 5 ns -- 2 3 0 5 ns 4 ns UNIT td(CLKL-IAQL) Delay time, IAQ low from CLKOUT low td(CLKL-IAQH) Delay time, IAQ high from CLKOUT low td(A)IAQ Delay time, address valid before IAQ low td(CLKL-IACKL) Delay time, IACK low from CLKOUT low -- 2 3 -- 1 4 ns td(CLKL-IACKH) Delay time , IACK high from CLKOUT low -- 2 3 -- 1 4 ns td(A)IACK Delay time, address valid before IACK low 3 ns th(A)IAQ Hold time, address valid after IAQ high 0 -- 4 ns th(A)IACK Hold time, address valid after IACK high 0 -- 3 ns tw(IAQL) Pulse duration, IAQ low 2H--3 2H--3 ns tw(IACKL) Pulse duration, IACK low 2H--3 2H--3 ns 4 3 CLKOUT A[15:0] td(CLKL-IAQH) td(CLKL-IAQL) th(A)IAQ td(A)IAQ tw(IAQL) IAQ td(CLKL-IACKH) td(CLKL-IACKL) th(A)IACK td(A)IACK tw(IACKL) IACK MSTRB Figure 18. Instruction Acquisition (IAQ) and Interrupt Acknowledge (IACK) Timing POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 39 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 instruction acquisition (IAQ), interrupt acknowledge (IACK), external flag (XF), and TOUT timings (continued) switching characteristics over recommended operating conditions for external flag (XF) and TOUT [H = 0.5 tc(CO)] (see Figure 19 and Figure 20) ’548-66 PARAMETER td(XF) UNIT MIN MAX MIN MAX Delay time, XF high after CLKOUT low 0 5 0 5 Delay time, XF low after CLKOUT low 0 5 0 5 -- 2 3 0 4 ns -- 2 3 0 4 ns td(TOUTH) Delay time, TOUT high after CLKOUT low td(TOUTL) Delay time, TOUT low after CLKOUT low tw(TOUT) Pulse duration, TOUT 2H--3 CLKOUT td(XF) XF Figure 19. External Flag (XF) Timing CLKOUT td(TOUTH) td(TOUTL) TOUT tw(TOUT) Figure 20. TOUT Timing 40 ’548-80 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 2H--3 ns ns TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial port receive timing timing requirements for serial port receive [H = 0.5 tc(CO)] (see Figure 21) ’548-66 † tc(SCK) Cycle time, serial port clock tf(SCK) Fall time, serial port clock tr(SCK) Rise time, serial port clock tw(SCK) Pulse duration, serial port clock low/high tsu(FSR) th(FSR) ’548-80 UNIT MIN MAX MIN MAX 6H † 6H † ns 6 ns 6 ns 6 6 3H 3H ns Setup time, FSR before CLKR falling edge 6 4 ns Hold time, FSR after CLKR falling edge 6 4 ns th(DR) Hold time, DR after CLKR falling edge 6 6 ns tsu(DR) Setup time, DR before CLKR falling edge 6 6 ns The serial port design is fully static and, therefore, can operate with tc(SCK) approaching . It is characterized approaching an input frequency of 0 Hz but tested at a much higher frequency to minimize test time. tc(SCK) tf(SCK) tw(SCK) CLKR th(FSR) tw(SCK) tsu(FSR) tr(SCK) tsu(DR) FSR th(DR) DR BIT 1 2 7/15 8/16 Figure 21. Serial Port Receive Timing POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 41 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial port transmit timing switching characteristics over recommended operating conditions for serial port transmit with external clocks and frames (see Figure 22) ’548-66 PARAMETER td(DX) Delay time, DX valid after CLKX rising th(DX) Hold time, DX valid after CLKX rising tdis(DX) Disable time, DX after CLKX rising MIN ’548-80 MAX MIN MAX 25 --5 25 -- 5 UNIT ns ns 40 40 ns timing requirements for serial port transmit with external clocks and frames [H = 0.5tc(CO)] (see Figure 22) ’548-66 tc(SCK) Cycle time, serial port clock th(FSX) Hold time, FSX after CLKX falling edge (see Note 1) th(FSX)H Hold time, FSX after CLKX rising edge (see Note 1) tf(SCK) tr(SCK) tw(SCK) Pulse duration, serial port clock low/high td(FSX) Delay time, FSX after CLKX rising edge ’548-80 MIN MAX MIN MAX 6H † 6H † 6 6 UNIT ns ns 2H--5‡ 2H--3‡ ns Fall time, serial port clock 6 6 ns Rise time, serial port clock 6 6 ns 3H 3H 2H--5 ns 2H--3 † ns The serial port design is fully static and, therefore, can operate with tc(SCK) approaching . It is characterized approaching an input frequency of 0 Hz but tested at a much higher frequency to minimize test time. ‡ If the FSX pulse does not meet this specification, the first bit of serial data is driven on DX until the falling edge of FSX. After the falling edge of FSX, data is shifted out on DX pin. The transmit buffer-empty interrupt is generated when the th(FSX) and th(FSX)H specification is met. NOTE 1: Internal clock with external FSX and vice versa are also allowable. However, FSX timings to CLKX always are defined depending on the source of FSX, and CLKX timings always are dependent upon the source of CLKX. Specifically, the relationship of FSX to CLKX is independent of the source of CLKX. tc(SCK) tf(SCK) tw(SCK) CLKX th(FSX)H td(FSX) tw(SCK) th(FSX) tr(SCK) FSX td(DX) tdis(DX) th(DX) DX BIT 1 2 7/15 Figure 22. Serial Port Transmit Timing With External Clocks and Frames 42 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 8/16 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial port transmit timing (continued) switching characteristics over recommended operating conditions for serial port transmit with internal clocks and frames [H = 0.5tc(CO)] (see Figure 23) ’548-66 PARAMETER MIN TYP ’548-80 MAX MIN TYP 8H MAX 8H UNIT tc(SCK) Cycle time, serial port clock td(FSX) Delay time, CLKX rising to FSX 15 7 ns td(DX) Delay time, CLKX rising to DX 15 7 ns tdis(DX) Disable time, CLKX rising to DX 20 20 ns th(DX) Hold time, DX valid after CLKX rising edge tf(SCK) Fall time, serial port clock tr(SCK) Rise time, serial port clock tw(SCK) Pulse duration, serial port clock low/high -- 5 ns -- 2 4 4 4H--8 4H--4 ns 3 ns 3 ns ns tc(SCK) tf(SCK) tw(SCK) CLKX td(FSX) tw(SCK) tr(SCK) td(FSX) td(DX) FSX tdis(DX) th(DX) DX 1 2 7/15 8/16 Figure 23. Serial Port Transmit Timing With Internal Clocks and Frames POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 43 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 buffered serial port receive timing timing requirements (see Figure 24) ’548-66 ’548-80 UNIT MIN MAX MIN MAX 20 † 20 † ns tc(SCK) Cycle time, serial port clock tf(SCK) Fall time, serial port clock 4 4 ns tr(SCK) Rise time, serial port clock 4 4 ns tw(SCK) Pulse duration, serial port clock low/high 6 6 tsu(BFSR) Setup time, BFSR before BCLKR falling edge (see Note 2) 2 2 th(BFSR) Hold time, BFSR after BCLKR falling edge (see Note 2) tsu(BDR) Setup time, BDR before BCLKR falling edge th(BDR) Hold time, BDR after BCLKR falling edge 10 tc(SCK) --2‡ 10 ns ns tc(SCK) --2‡ ns 0 0 ns 10 10 ns † The serial port design is fully static and therefore can operate with tc(SCK) approaching infinity. It is characterized approaching an input frequency of 0 Hz but tested at a much higher frequency to minimize test time. ‡ First bit is read when BFSR is sampled low by BCLKR clock. NOTE 2: Timings for BCLKR and BFSR are given with polarity bits (BCLKP and BFSP) set to 0. tc(SCK) tw(SCK) tf(SCK) BCLKR th(BFSR) tr(SCK) tw(SCK) tsu(BFSR) tsu(BDR) BFSR th(BDR) BDR 1 2 8/10/12/16 Figure 24. Buffered Serial Port Receive Timing 44 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 buffered serial port transmit timing of external frames switching characteristics over recommended operating conditions (see Figure 25) ’548-66 PARAMETER MIN ’548-80 MAX MIN MAX 18 UNIT td(BDX) Delay time, BDX valid after BCLKX rising tdis(BDX) Disable time, BDX after BCLKX rising tdis(BDX)pcm Disable time, PCM mode, BDX after BCLKX rising ten(BDX)pcm Enable time, PCM mode, BDX after BCLKX rising 8 8 ns th(BDX) Hold time, BDX valid after BCLKX rising 2 2 ns 4 6 4 6 18 ns 6 ns 6 ns timing requirements (see Figure 25) ’548-66 ’548-80 UNIT MIN MAX MIN MAX 20 † 20 † ns tc(SCK) Cycle time, serial port clock tf(SCK) Fall time, serial port clock 4 4 ns tr(SCK) Rise time, serial port clock 4 4 ns tw(SCK) Pulse duration, serial port clock low/high 6 th(BFSX) Hold time, BFSX after CLKX falling edge (see Notes 3 and 4) 6 tsu(BFSX) Setup time, FSX before CLKX falling edge (see Notes 3 and 4) 6 6 tc(SCK) --6‡ 6 6 ns tc(SCK) --6‡ ns ns † The serial port design is fully static and therefore can operate with tc(SCK) approaching infinity. It is characterized approaching an input frequency of 0 Hz but tested at a much higher frequency to minimize test time. ‡ If BFSX does not meet this specification, the first bit of the serial data is driven on BDX until BFSX goes low (sampled on falling edge of BCLKX). After falling edge of the BFSX, data will be shifted out on the BDX pin. NOTES: 3. Internal clock with external BFSX and vice versa are also allowable. However, BFSX timings to BCLKX always are defined depending on the source of BFSX, and BCLKX timings always are dependent upon the source of BCLKX. 4. Timings for BCLKX and BFSX are given with polarity bits (BCLKP and BFSP) set to 0. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 45 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 buffered serial port transmit timing of external frames (continued) tc(SCK) tw(SCK) tf(SCK) BCLKX tr(SCK) th(BFSX) tw(SCK) tsu(BFSX) BFSX th(BDX) td(BDX) tdis(BDX) BDX 1 2 8/10/12/16 Figure 25. Buffered Serial Port Transmit Timing of External Clocks and External Frames 46 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 buffered serial port transmit timing of internal frame and internal clock switching characteristics over recommended operating conditions [H = 0.5tc(CO)] (see Figure 26) ’548-66 PARAMETER ’548-80 MIN MAX MIN MAX UNIT tc(SCK) Cycle time, serial port clock, internal clock 20 62H 20 62H ns td(BFSX) Delay time, BFSX after BCLKX rising edge (see Notes 3 and 4) 0 10 0 10 ns td(BDX) Delay time, BDX valid after BCLKX rising edge 8 ns tdis(BDX) Disable time, BDX after BCLKX rising edge 5 ns tdis(BDX)pcm Disable time, PCM mode, BDX after BCLKX rising edge 5 ns ten(BDX)pcm Enable time, PCM mode, BDX after BCLKX rising edge 7 th(BDX) Hold time, BDX valid after BCLKX rising edge 0 tf(SCK) Fall time, serial port clock tr(SCK) Rise time, serial port clock tw(SCK) Pulse duration, serial port clock low/high 8 0 5 0 5 7 ns 0 4 4 6 ns 4 ns 4 ns 6 ns NOTES: 3. Internal clock with external BFSX and vice versa are also allowable. However, BFSX timings to BCLKX always are defined depending on the source of BFSX, and BCLKX timings always are dependent upon the source of BCLKX. 4. Timings for BCLKX and BFSX are given with polarity bits (BCLKP and BFSP) set to 0. tc(SCK) tw(SCK) tf(SCK) BCLKX tr(SCK) td(BFSX) tw(SCK) td(BFSX) BFSX th(BDX) td(BDX) tdis(BDX) BDX 1 2 8/10/12/16 Figure 26. Buffered Serial Port Transmit Timing of Internal Clocks and Internal Frames POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 47 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial-port receive timing in TDM mode timing requirements [H = 0.5tc(CO)] (see Figure 27) ’548-66 ’548-80 UNIT MIN MAX MIN MAX 16H † 16H † ns tc(SCK) Cycle time, serial-port clock tf(SCK) Fall time, serial-port clock 6 6 ns tr(SCK) Rise time, serial-port clock 6 6 ns tw(SCK) Pulse duration, serial-port clock low/high 8H 8H ns tsu(TD-TCH) Setup time, TDAT/TADD before TCLK rising edge 10 10 ns th(TCH-TD) Hold time, TDAT/TADD after TCLK rising edge 1 1 ns tsu(TF-TCH) Setup time, TFRM before TCLK rising edge‡ 10 10 ns th(TCH-TF) Hold time, TFRM after TCLK rising edge‡ 10 10 ns † The serial-port design is fully static and, therefore, can operate with tc(SCK) approaching infinity. It is characterized approaching an input frequency of 0 Hz but tested at a much higher frequency to minimize test time. ‡ TFRM timing and waveforms shown in Figure 27 are for external TFRM. TFRM can also be configured as internal. The TFRM internal case is illustrated in the transmit timing diagram in Figure 28. 48 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial-port receive timing in TDM mode (continued) tw(SCK) tf(SCK) tw(SCK) TCLK tc(SCK) tr(SCK) tsu(TD-TCH) th(TCH-TD) TDAT B0 B15 B14 B13 B12 B11 A0 A1 A2 A3 A4 B2 B1 B0 tsu(TF-TCH) TADD A7 th(TCH-TF) TFRM Figure 27. Serial-Port Receive Timing in TDM Mode POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 49 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial-port transmit timing in TDM mode switching characteristics over recommended operating conditions [H = 0.5tc(CO)] (see Figure 28) ’548-66 PARAMETER ’548-80 MAX MIN th(TCH-TDV) Hold time, TDAT/TADD valid after TCLK rising edge, TCLK external 1 1 th(TCH-TDV) Hold time, TDAT/TADD valid after TCLK rising edge, TCLK internal 1 1 td(TCH-TFV) td(TC-TDV) † MIN MAX UNIT ns ns Delay time, TFRM valid after TCLK rising edge TCLK ext† H -- 3 3H + 22 H -- 3 3H+22 Delay time, TFRM valid after TCLK rising edge, TCLK int† H -- 3 3H + 12 H -- 3 3H+12 Delay time, TCLK to valid TDAT/TADD, TCLK ext 25 25 Delay time, TCLK to valid TDAT/TADD, TCLK int 18 18 ns ns TFRM timing and waveforms shown in Figure 28 are for internal TFRM. TFRM can also be configured as external. The TFRM external case is illustrated in the receive timing diagram in Figure 27. 50 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 serial-port transmit timing in TDM mode (continued) timing requirements [H = 0.5tc(CO)] (see Figure 28) ’548-66 ‡ UNIT MAX MIN MAX 16H† ‡ 16H† ‡ ns tc(SCK) Cycle time, serial-port clock tf(SCK) Fall time, serial-port clock 6 6 ns tr(SCK) Rise time, serial-port clock 6 6 ns tw(SCK) † ’548-80 MIN 8H† Pulse duration, serial-port clock low/high 8H† ns When SCK is generated internally, this value is typical. The serial-port design is fully static and, therefore, can operate with tc(SCK) approaching 1. It is characterized approaching an input frequency of 0 Hz but tested as a much higher frequency to minimize test time. tw(SCK) tw(SCK) tf(SCK) TCLK tc(SCK) B15 TDAT B0 td(TC-TDV) B14 tr(SCK) B13 B12 B8 A2 A3 A7 B7 B2 B1 B0 th(TCH-TDV) td(TC-TDV) th(TCH-TDV) A1 TADD td(TCH-TFV) A0 td(TCH-TFV) TFRM Figure 28. Serial-Port Transmit Timing in TDM Mode POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 51 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing switching characteristics over recommended operating (see Notes 5 and 6) (see Figure 29 through Figure 32) conditions td(HEL-HDV1) Delay time, DS low to HD driven Delay time, HDS falling to HD valid for first byte of a non-subsequent read:  max 20 ns†‡ = 0.5tc(CO)] ’548-66 PARAMETER td(DSL-HDV) [H MIN MAX 5 12 UNIT ns Case 1: Shared-access mode if tw(DSH) < 7H 7H+20--tw(DSH) Case 2: Shared-access mode if tw(DSH) > 7H 20 ns Case 3: Host-only mode if tw(DSH) < 20 ns 40--tw(DSH) Case 4: Host-only mode if tw(DSH) > 20 ns 20 5‡ td(DSL-HDV2) Delay time, DS low to HD valid, second byte td(DSH-HYH) Delay time, DS high to HRDY high 20 tsu(HDV-HYH) Setup time, HD valid before HRDY rising edge 3H--10 th(DSH-HDV)R Hold time, HD valid after DS rising edge, read 0 12 ns td(COH-HYH) Delay time, CLKOUT rising edge to HRDY high 10 ns td(DSH-HYL) Delay time, HDS or HCS high to HRDY low 12 ns td(COH-HTX) Delay time, CLKOUT rising edge to HINT change 15 ns 10H+10 † ns ns ns Host-only mode timings apply for read accesses to HPIC or HPIA, write accesses to BOB, and resetting DSPINT or HINT to 0 in shared-access mode. HRDY does not go low for these accesses. ‡ Shared-access mode timings will be met automatically if HRDY is used. NOTES: 5. SAM = shared-access mode, HOM = host-only mode HAD stands for HCNTRL0, HCNTRL1, and HR/W. HDS refers to either HDS1 or HDS2. DS refers to the logical OR of HCS and HDS. 6. On host read accesses to the HPI, the setup time of HD before DS rising edge depends on the host waveforms and cannot be specified here. 52 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) switching characteristics over recommended operating conditions (see Notes 5 and 6) (see Figure 29 through Figure 32) (continued) td(HEL-HDV1) Delay time, DS low to HD driven Delay time, HDS falling to HD valid for first byte of a non-subsequent read:  max 20 ns†‡ = 0.5tc(CO)] ’548-80 PARAMETER td(DSL-HDV) [H MIN MAX 5 12 UNIT ns Case 1: Shared-access mode if tw(DSH) < 7H 7H+20--tw(DSH) Case 2: Shared-access mode if tw(DSH) > 7H 20 ns Case 3: Host-only mode if tw(DSH) < 20 ns 40--tw(DSH) Case 4: Host-only mode if tw(DSH) > 20 ns 20 5‡ td(DSL-HDV2) Delay time, DS low to HD valid, second byte td(DSH-HYH) Delay time, DS high to HRDY high 20 tsu(HDV-HYH) Setup time, HD valid before HRDY rising edge 3H--10 th(DSH-HDV)R Hold time, HD valid after DS rising edge, read 0 12 ns td(COH-HYH) Delay time, CLKOUT rising edge to HRDY high 10 ns td(DSH-HYL) Delay time, HDS or HCS high to HRDY low 12 ns td(COH-HTX) Delay time, CLKOUT rising edge to HINT change 15 ns 10H+10 ns ns ns † Host-only mode timings apply for read accesses to HPIC or HPIA, write accesses to BOB, and resetting DSPINT or HINT to 0 in shared-access mode. HRDY does not go low for these accesses. ‡ Shared-access mode timings will be met automatically if HRDY is used. NOTES: 5. SAM = shared-access mode, HOM = host-only mode HAD stands for HCNTRL0, HCNTRL1, and HR/W. HDS refers to either HDS1 or HDS2. DS refers to the logical OR of HCS and HDS. 6. On host read accesses to the HPI, the setup time of HD before DS rising edge depends on the host waveforms and cannot be specified here. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 53 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) timing requirements [H = 0.5tc(CO)] (see Note 5, Figure 29 through Figure 32) ’548-66 MIN tsu(HBV-DSL) Setup time, HAD/HBIL valid before DS or HAS falling edge th(DSL-HBV) Hold time, HAD/HBIL valid after DS or HAS falling edge tsu(HSL-DSL) Setup time, HAS low before DS falling edge MAX ’548-80 MIN MAX UNIT 10 10 ns 5 5 ns 12 12 ns 30† ns ns tw(DSL) Pulse duration, DS low 30† tw(DSH) Pulse duration, DS high 10 10 50 50 tc(DSH-DSH)† Case 1: HOM access timings Cycle time, DS rising (see Access Timing Without HRDY) edge to next DS Case 2a: SAM accesses and HOM active rising edge writes to DSPINT or HINT. (see Access Timings With HRDY) 10H 10H 12 12 ns 10H 10H ns 3 3 ns tsu(HDV-DSH) td(DSH-HSL) ‡ th(DSH -- HDV)W Setup time, HD valid before DS rising edge Delay time, DS high to next HAS low Hold time, HD valid after DS rising edge, write † ns A host not using HRDY should meet the 10H requirement all the time unless a software handshake is used to change the access rate according to the HPI mode. ‡ Must only be met if HAS is going low when not accessing the HPI (as would be the case where multiple devices are being driven by one host). NOTE 5: SAM = shared-access mode, HOM = host-only mode HAD stands for HCNTRL0, HCNTRL1, and HR/W. HDS refers to either HDS1 or HDS2. DS refers to the logical OR of HCS and HDS. 54 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) FIRST BYTE Valid HAD SECOND BYTE Valid Valid th(DSL-HBV) th(DSL-HBV) tsu(HBV-DSL) tsu(HBV-DSL) HBIL tw(DSH) tw(DSH) tw(DSL) tw(DSL) HCS HDS tc(DSH-DSH) td(DSL-HDV2) td(HEL-HDV1) th(DSH-HDV) td(DSL-HDV) HD Read Valid th(DSH-HDV)R Valid tsu(HDV-DSH) tsu(HDV-DSH) th(DSH-HDV)W th(DSH-HDV) HD Write Valid Valid Figure 29. Read/Write Access Timings Without HRDY or HAS POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 55 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) FIRST BYTE SECOND BYTE HAS tsu(HBV-DSL) td(DSH-HSL) th(DSL-HBV) tsu(HSL-DSL) Valid HAD Valid Valid th(DSL-HBV)† tsu(HBV-DSL)† HBIL tc(DSH-DSH) tw(DSH) tw(DSL) HCS HDS td(HEL-HDV1) td(DSL-HDV2) th(DSH-HDV)R th(DSH-HDV)R td(DSL-HDV) HD Read Valid Valid tsu(HDV-DSH) tsu(HDV-DSH) th(DSH-HDV)W th(DSH-HDV)W HD Write † Valid Valid When HAS is tied to VDD Figure 30. Read/Write Access Timings Using HAS Without HRDY 56 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) FIRST BYTE SECOND BYTE HAS tsu(HSL-DSL) tsu(HBV-DSL) td(DSH-HSL) th(DSL-HBV) HAD tsu(HBV-DSL)† th(DSL-HBV)† HBIL tc(DSH-DSH) tw(DSH) tw(DSL) HCS HDS tsu(HDV-HYH) td(DSH-HYH) HRDY td(DSH-HYL) td(HEL-HDV1) td(DSL-HDV2) th(DSH-HDV)R td(DSL-HDV) HD Read Valid th(DSH-HDV)R Valid tsu(HDV-DSH) tsu(HDV-DSH) th(DSH-HDV)W th(DSH-HDV)W HD Write Valid Valid td(COH-HYH) CLKOUT td(COH-HTX) HINT † When HAS is tied to VDD Figure 31. Read/Write Access Timing With HRDY POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 57 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 host port interface timing (continued) HCS td(DSH-HYL) HRDY td(DSH-HYH) HDS Figure 32. HRDY Signal When HCS is Always Low 58 POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 TMS320LC548 FIXED-POINT DIGITAL SIGNAL PROCESSOR SPRS123 -- FEBRUARY 2000 MECHANICAL DATA Thermal Resistance Characteristics of PGE-144 Package PARAMETER C/W RJA 56 RJC 5 Thermal Resistance Characteristics of GGU-144 Package PARAMETER C/W RJA 38 RJC 5 The following packaging information reflects the most current released data available for the designated device(s). This data is subject to change without notice and without revision of this document. POST OFFICE BOX 1443  HOUSTON, TEXAS 77251--1443 59 PACKAGE OPTION ADDENDUM www.ti.com 31-Mar-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking (4/5) (6) TMS320LC548PGE-66 ACTIVE LQFP PGE 144 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -66 TMS320LC548PGE TMS320LC548PGE-80 ACTIVE LQFP PGE 144 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -80 TMS320LC548PGE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of