SL811HS_11

SL811HS Embedded USB Host/Slave Controller Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Introduction The SL811HS is an Embedded USB Host/Slave Controller capable of communicating in either full speed or low speed. The SL811HS interfaces to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others. The SL811HS USB Host Controller conforms to USB Specification 1.1. The SL811HS incorporates USB Serial Interface functionality along with internal full or low speed transceivers. The SL811HS supports and operates in USB full speed mode at 12 Mbps, or in low speed mode at 1.5 Mbps. When in host mode, the SL811HS is the master and controls the USB bus and the devices that are connected to it. In peripheral mode, otherwise known as a slave device, the SL811HS operates as a variety of full- or low speed devices. The SL811HS data port and microprocessor interface provide an 8-bit data path I/O or DMA bidirectional, with interrupt support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others. The SL811HS has 256-bytes of internal RAM which is used for control registers and data buffer. The available lead-free package is a 48-pin (SL811HST-AXC) package. All packages operate at 3.3 VDC. The I/O interface logic is 5 V-tolerant. First USB Host/Slave controller for embedded systems in the market with a standard microprocessor bus interface Supports both full speed (12 Mbps) and low speed (1.5 Mbps) USB transfer in both master and slave modes Conforms to USB Specification 1.1 for full- and low speed Operates as a single USB host or slave under software control Automatic detection of either low- or full speed devices 8-bit bidirectional data, port I/O (DMA supported in slave mode) On-chip SIE asnd USB transceivers On-chip single root HUB support 256-byte internal SRAM buffer Ping-pong buffers for improved performance Operates from 12 or 48 MHz crystal or oscillator (built-in DPLL) 5 V-tolerant interface Suspend/resume, wake up, and low-power modes are supported Auto-generation of SOF and CRC5/16 Auto-address increment mode, saves memory READ/WRITE cycles Development kit including source code drivers is available 3.3 V power source, 0.35 micron CMOS technology Available in 48-pin TQFP package Logic Block Diagram Master/Slave Controller INTERRUPT CONTROLLER INTR D + D- 256 Byte RAM USB Root HUB XCVRS SERIAL INTERFACE ENGINE BUFFERS & CONTROL REGISTERS DMA Interface nDRQ nDACK CLOCK GENERATOR PROCESSOR INTERFACE nW R nRD nCS nRST D0-7 X1 X2 Cypress Semiconductor Corporation Document 38-08008 Rev. *F • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised March 25, 2011 [+] Feedback SL811HS Contents Features ............................................................................. 1 Introduction ....................................................................... 1 Logic Block Diagram ........................................................ 1 Data Port, Microprocessor Interface ............................ 3 DMA Controller (slave mode only) .............................. 3 Interrupt Controller ...................................................... 3 Buffer Memory ............................................................. 3 PLL Clock Generator ................................................... 4 USB Transceiver ......................................................... 5 SL811HS Registers ........................................................... 5 Physical Connections .................................................... 20 48-Pin TQFP Physical Connections .......................... 20 Electrical Specifications ................................................ 23 Absolute Maximum Ratings ....................................... 23 Recommended Operating Condition ........................ 23 External Clock Input Characteristics (X1) .................. 23 DC Characteristics .................................................... 24 USB Host Transceiver Characteristics ...................... 24 Bus Interface Timing Requirements .......................... 25 Ordering Information ...................................................... 29 Ordering Code Definitions ......................................... 29 Package Diagram ............................................................ 30 Acronyms ........................................................................ 30 Document Conventions ................................................. 30 Units of Measure ....................................................... 30 Document History Page ................................................ 31 Sales, Solutions, and Legal Information ...................... 32 Worldwide Sales and Design Support ....................... 32 Products .................................................................... 32 PSoC Solutions ......................................................... 32 Document 38-08008 Rev. *F Page 2 of 32 [+] Feedback SL811HS Data Port, Microprocessor Interface The SL811HS microprocessor interface provides an 8-bit bidirectional data path along with appropriate control lines to interface to external processors or controllers. Programmed I/O or memory mapped I/O designs are supported through the 8-bit interface, chip select, read and write input strobes, and a single address line, A0. Access to memory and control register space is a simple two step process, requiring an address Write with A0 = ’0’, followed by a register/memory Read or Write cycle with address line A0 = ’1’. In addition, a DMA bidirectional interface in slave mode is available with handshake signals such as nDRQ, nDACK, nWR, nRD, nCS and INTRQ. The SL811HS WRITE or READ operation terminates when either nWR or nCS goes inactive. For devices interfacing to the SL811HS that deactivate the Chip Select nCS before the Write nWR, the data hold timing must be measured from the nCS and is the same value as specified. Therefore, both Intel®- and Motorola-type CPUs work easily with the SL811HS without any external glue logic requirements. mode described in Auto Address Increment Mode, where direct addressing is used to READ/WRITE to an individual address. USB transactions are automatically routed to the memory buffer that is configured for that transfer. Control registers are provided so that pointers and block sizes in buffer memory are determined and allocated. Figure 1. Memory Map 16 bytes 0x00 – 0x0F Control and status registers 64 bytes 0x00 – 0x39 Control/status registers and endpoint control/status registers 0x40 – 0xFF USB data buffer 192 bytes 240 bytes 0x10 – 0xFF USB data buffer Host Mode Memory Map Peripheral Mode Memory Map DMA Controller (slave mode only) In applications that require transfers of large amounts of data such as scanner interfaces, the SL811HS provides a DMA interface. This interface supports DMA READ or WRITE transfers to the SL811HS internal RAM buffer, it is done through the microprocessor data bus via two control lines (nDRQ - Data Request and nDACK - Data Acknowledge), along with the nWR line and controls the data flow into the SL811HS. The SL811HS has a count register that allows selection of programmable block sizes for DMA transfer. The control signals, both nDRQ and nDACK, are designed for compatibility with standard DMA interfaces. Auto Address Increment Mode The SL811HS supports auto increment mode to reduce READ and WRITE memory cycles. In this mode, the microcontroller needs to set up the address only once. Whenever any subsequent DATA is accessed, the internal address counter advances to the next address location. Auto Address Increment Example. To fill the data buffer that is configured for address 10h, follow these steps: 1. Write 10h to SL811HS with A0 LOW. This sets the memory address that is used for the next operation. 2. Write the first data byte into address 10h by doing a write operation with A0 HIGH. An example is a Get Descriptor; the first byte that is sent to the device is 80h (bmRequestType) so you would write 80h to address 10h. 3. Now the internal RAM address pointer is set to 11h. So, by doing another write with A0 HIGH, RAM address location 11h is written with the data. Continuing with the Get Descriptor example, a 06h is written to address 11h for the bRequest value. 4. Repeat Step 3 until all the required bytes are written as necessary for a transfer. If auto-increment is not used, you write the address value each time before writing the data as shown in Step 1. The advantage of auto address increment mode is that it reduces the number of required SL811HS memory READ/WRITE cycles to move data to/from the device. For example, transferring 64 bytes of data to/from SL811HS, using auto increment mode, reduces the number of cycles to 1 address WRITE and 64 READ/WRITE data cycles, compared to 64 address writes and 64 data cycles for random access. Interrupt Controller The SL811HS interrupt controller provides a single output signal (INTRQ) that is activated by a number of programmable events that may occur as result of USB activity. Control and status registers are provided to allow the user to select single or multiple events, which generate an interrupt (assert INTRQ) and let the user view interrupt status. The interrupts are cleared by writing to the Interrupt Status Register. Buffer Memory The SL811HS contains 256 bytes of internal memory used for USB data buffers, control registers, and status registers. When in master mode (host mode), the memory is defined where the first 16 bytes are registers and the remaining 240 bytes are used for USB data buffers. When in slave mode (peripheral mode), the first 64 bytes are used for the four endpoint control and status registers along with the various other registers. This leaves 192 bytes of endpoint buffer space for USB data transfers. Access to the registers and data memory is through the 8-bit external microprocessor data bus, in either indexed or direct addressing. Indexed mode uses the Auto Address Increment Document 38-08008 Rev. *F Page 3 of 32 [+] Feedback SL811HS PLL Clock Generator Either a 12 MHz or a 48 MHz external crystal is used with the SL811HS[1]. Two pins, X1 and X2, are provided to connect a low cost crystal circuit to the device as shown in Figure 2 and Figure 2. Use an external clock source if available in the application instead of the crystal circuit by connecting the source directly to the X1 input pin. When a clock is used, the X2 pin is not connected. When the CM pin is tied to a logic 0, the internal PLL is bypassed so the clock source must meet the timing requirements specified by the USB specification. Figure 2. Full Speed 48 MHz Crystal Circuit Figure 3. Optional 12 MHz Crystal Circuit X1 X2 Rf 1M Rs 100 X1 12 MHz , series, 20-pF load X1 X2 Cin 22 pF Cout 22 pF Rf 1M Rs X1 48 MHz, series, 20-pF load 100 Typical Crystal Requirements The following are examples of ‘typical requirements.’ Note that these specifications are generally found as standard crystal values and are less expensive than custom values. If crystals are used in series circuits, load capacitance is not applicable. Load capacitance of parallel circuits is a requirement. 48 MHz third overtone crystals require the Cin/Lin filter to guarantee 48 MHz operation. 12 MHz Crystals: Cbk 0.01 μF Cout 22 pF Cin 22 pF Lin 2.2 μH Frequency Tolerance: Operating Temperature Range: Frequency: Frequency Drift over Temperature: ESR (Series Resistance): Load Capacitance: Shunt Capacitance: Drive Level: Operating Mode: 48 MHz Crystals: Frequency Tolerance: Operating Temperature Range: Frequency: Frequency Drift over Temperature: ESR (Series Resistance): Load Capacitance: Shunt Capacitance: Drive Level: Operating Mode: ±100 ppm or better 0°C to 70°C 12 MHz ± 50 ppm 60Ω 10 pF min. 7 pF max. 0.1–0.5 mW fundamental ±100 ppm or better 0°C to 70°C 48 MHz ± 50 ppm 40 Ω 10 pF min. 7 pF max. 0.1–0.5 mW third overtone Note 1. CM (Clock Multiply) pin of the SL811HS must be tied to GND when 48 MHz crystal circuit or 48 MHz clock source is used. Document 38-08008 Rev. *F Page 4 of 32 [+] Feedback SL811HS USB Transceiver The SL811HS has a built in transceiver that meets USB Specification 1.1. The transceiver is capable of transmitting and receiving serial data at USB full speed (12 Mbits) and low speed (1.5 Mbits). The driver portion of the transceiver is differential while the receiver section is comprised of a differential receiver and two single-ended receivers. Internally, the transceiver interfaces to the Serial Interface Engine (SIE) logic. Externally, the transceiver connects to the physical layer of the USB. Table 1. SL811HS Master (Host) Mode Registers Register Name SL811HS USB-A Host Control Register USB-A Host Base Address USB-A Host Base Length USB-A Host PID, Device Endpoint (Write)/USB Status (Read) USB-A Host Device Address (Write)/Transfer Count (Read) Control Register 1 Interrupt Enable Register Reserved Register USB-B Host Control Register USB-B Host Base Address USB-B Host Base Length USB-B Host PID, Device Endpoint (Write)/USB Status (Read) USB-B Host Device Address (Write)/Transfer Count (Read) Status Register SOF Counter LOW (Write)/HW Revision Register (Read) Memory Buffer SL811HS (hex) Address 00h 01h 02h 03h 04h 05h 06h Reserved 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh SL811HS Registers Operation and control of the SL811HS is managed through internal registers. When operating in Master/Host mode, the first 16 address locations are defined as register space. In Slave/Peripheral mode, the first 64 bytes are defined as register space. The register definitions vary greatly between each mode of operation and are defined separately in this document (section “Table 1 shows the memory map and register mapping of the SL811HS in master/host mode.” on page 5 describes Host register definitions, while section “SL811HS Slave Mode Registers” on page 14 describes Slave register definitions). Access to the registers are through the microprocessor interface similar to normal RAM accesses (see “Bus Interface Timing Requirements” on page 25) and provide control and status information for USB transactions. Any write to control register 0FH enables the SL811HS full features bit. This is an internal bit of the SL811HS that enables additional features. Table 1 shows the memory map and register mapping of the SL811HS in master/host mode. SOF Counter HIGH and Control Register 2 0Fh 10H-FFh The registers in the SL811HS are divided into two major groups. The first group is referred to as USB Control registers. These registers enable and provide status for control of USB transactions and data flow. The second group of registers provides control and status for all other operations. Register Values on Power-up and Reset The following registers initialize to zero on power-up and reset: ■ ■ ■ ■ USB-A/USB-B Host Control Register [00H, 08H] bit 0 only Control Register 1 [05H] USB Address Register [07H] Current Data Set/Hardware Revision/SOF Counter LOW Register [0EH] All other register’s power-up and reset in an unknown state and firmware for initialization. Document 38-08008 Rev. *F Page 5 of 32 [+] Feedback SL811HS USB Control Registers Communication and data flow on the USB bus uses the SL811HS’ USB A-B Control registers. The SL811HS communicates with any USB Device function and any specific endpoint via the USB-A or USB-B register sets. The USB A-B Host Control registers are used in an overlapped configuration to manage traffic on the USB bus. The USB Host Control register also provides a means to interrupt an external CPU or microcontroller when one of the USB protocol transactions is completed. Table 1 and Table 2 show the two sets of USB Host Control registers, the ’A’ set and ’B’ set. The two register sets allow for overlapping operation. When one set of parameters is being set up, the other is transferring. On completion of a transfer to an endpoint, the next operation is controlled by the other register set. Note The USB-B register set is used only when SL811HS mode is enabled by initializing register 0FH. The SL811HS USB Host Control has two groups of five registers each which map in the SL811HS memory space. These registers are defined in the following tables. Table 2. SL811HS Host Control Registers Register Name SL811H USB-A Host Control Register USB-A Host Base Address USB-A Host Base Length USB-A Host PID, Device Endpoint (Write)/USB Status (Read) USB-A Host Device Address (Write)/Transfer Count (Read) USB-B Host Control Register USB-B Host Base Address USB-B Host Base Length USB-B Host PID, Device Endpoint (Write)/USB Status (Read) USB-B Host Device Address (Write)/Transfer Count (Read) SL811HS (hex) Address 00h 01h 02h 03h 04h 08h 09h 0Ah 0Bh 0Ch Document 38-08008 Rev. *F Page 6 of 32 [+] Feedback SL811HS USB-A/USB-B Host Control Registers [Address = 00h, 08h] . Table 3. USB-A/USB-B Host Control Register Definition [Address 00h, 08h] Bit 7 Preamble Bit Position 7 Bit 6 Data Toggle Bit Bit Name Preamble Bit 5 SyncSOF Function If bit = ’1’ a preamble token is transmitted before transfer of low speed packet. If bit = ’0’, preamble generation is disabled. ■ Bit 4 ISO Bit 3 Reserved Bit 2 Direction Bit 1 Enable Bit 0 Arm The SL811HS automatically generates preamble packets when bit 7 is set. This bit is only used to send packets to a low speed device through a hub. To communicate to a full speed device, this bit is set to ‘0’. For example, when SL811HS communicates to a low speed device via the HUB: — Set SL811HS SIE to operate at full speed, i.e., bit 5 of register 05h (Control Register 1) = ’0’. — Set bit 6 of register 0Fh (Control Register 2) = ’0’. Set correct polarity of DATA+ and DATA– state for full speed. — Set bit 7, Preamble bit, = ’1’ in the Host Control register. ■ When SL811HS communicates directly to a low speed device: — Set bit 5 of register 05h (Control Register 1) = ’1’. — Set bit 6 of register 0Fh (Control Register 2) = ’1’, DATA+ and DATA– polarity for low speed. — The state of bit 7 is ignored in this mode. 6 5 Data Toggle Bit SyncSOF ’0’ if DATA0, ’1’ if DATA1 (only used for OUT tokens in host mode). ’1’ = Synchronize with the SOF transfer when operating in FS only. The SL811HS uses bit 5 to enable transfer of a data packet after a SOF packet is transmitted. When bit 5 = ‘1’, the next enabled packet is sent after next SOF. If bit 5 = ‘0’ the next packet is sent immediately if the SIE is free. If operating in low speed, do not set this bit. When set to ’1’, this bit allows Isochronous mode for this packet. Bit 3 is reserved for future use. When equal to ’1’ transmit (OUT). When equal to ’0’ receive (IN). If Enable = ’1’, this bit allows transfers to occur. If Enable = ’0’, USB transactions are ignored. The Enable bit is used in conjunction with the Arm bit (bit 0 of this register) for USB transfers. Allows enabled transfers when Arm = ’1’. Cleared to ’0’ when transfer is complete (when Done Interrupt is asserted). 4 3 2 1 0 ISO Reserved Direction Enable Arm Once the other SL811HS Control registers are configured (registers 01h-04h or 09h-0Ch) the Host Control register is programmed to initiate the USB transfer. This register initiates the transfer when the Enable and Arm bit are set as described above. USB-A/USB-B Host Base Address [Address = 01h, 09h] . Table 4. USB-A/USB-B Host Base Address Definition [Address 01h, 09h] Bit 7 HBADD7 Bit 6 HBADD6 Bit 5 HBADD5 Bit 4 HBADD4 Bit 3 HBADD3 Bit 2 HBADD2 Bit 1 HBADD1 Bit 0 HBADD0 The USB-A/B Base Address is a pointer to the SL811HS memory buffer location for USB reads and writes. When transferring data OUT (Host to Device), the USB-A and USB-B Host Base Address registers can be set up before setting ARM on the USB-A or USB-B Host Control register. When using a double buffer scheme, the Host Base Address could be set up with the first buffer used for DATA0 data and the other for DATA1 data. Document 38-08008 Rev. *F Page 7 of 32 [+] Feedback SL811HS USB-A/USB-B Host Base Length [Address = 02h, 0Ah]. Table 5. USB-A / USB-B Host Base Length Definition [Address 02h, 0Ah] Bit 7 HBL7 Bit 6 HBL6 Bit 5 HBL5 Bit 4 HBL4 Bit 3 HBL3 Bit 2 HBL2 Bit 1 HBL1 Bit 0 HBL0 The USB A/B Host Base Length register contains the maximum packet size transferred between the SL811HS and a slave USB peripheral. Essentially, this designates the largest packet size that is transferred by the SL811HS. Base Length designates the size of data packet sent or received. For example, in full speed BULK mode, the maximum packet length is 64 bytes. In ISO mode, the maximum packet length is 1023 bytes since the SL811HS only has an 8-bit length; the maximum packet size for the ISO mode using the SL811HS is 255 – 16 bytes (register space). When the Host Base length register is set to zero, a Zero-Length packet is transmitted. USB-A/USB-B USB Packet Status (Read) and Host PID, Device Endpoint (Write) [Address = 03h, 0Bh]. This register has two modes dependent on whether it is read or written. When read, this register provides packet status and contains information relative to the last packet that has been received or transmitted. This register is not valid for reading until after the Done interrupt occurs, which causes the register to update. Table 6. USB-A/USB-B USB Packet Status Register Definition when READ [Address 03h, 0Bh] Bit 7 STALL Bit Position 7 6 5 Bit 6 NAK Bit Name STALL NAK Overflow Bit 5 Overflow Function Slave device returned a STALL. Slave device returned a NAK. Overflow condition - maximum length exceeded during receives. For underflow, see USB-A/USB-B Host Transfer Count Register (Read), USB Address (Write) [Address = 04h, 0Ch]. This bit is not applicable for Host operation since a SETUP packet is generated by the host. Sequence bit. ’0’ if DATA0, ’1’ if DATA1. Timeout occurred. A timeout is defined as 18-bit times without a device response (in full speed). Error detected in transmission. This includes CRC5, CRC16, and PID errors. Transmission Acknowledge. Bit 4 Setup Bit 3 Sequence Bit 2 Time-out Bit 1 Error Bit 0 ACK 4 3 2 1 0 Setup Sequence Time-out Error ACK When written, this register provides the PID and Endpoint information to the USB SIE engine used in the next transaction. All 16 Endpoints can be addressed by the SL811HS. Table 7. USB-A / USB-B Host PID and Device Endpoint Register when WRITTEN [Address 03h, 0Bh] Bit 7 PID3 Bit 6 PID2 Bit 5 PID1 Bit 4 PID0 Bit 3 EP3 Bit 2 EP2 Bit 1 EP1 Bit 0 EP0 PID[3:0]: 4-bit PID Field (See following table), EP[3:0]: 4-bit Endpoint Value in Binary. PID TYPE SETUP IN OUT SOF PREAMBLE NAK STALL DATA0 DATA1 Document 38-08008 Rev. *F D7-D4 1101 (D Hex) 1001 (9 Hex) 0001 (1 Hex) 0101 (5 Hex) 1100 (C Hex) 1010 (A Hex) 1110 (E Hex) 0011 (3 Hex) 1011 (B Hex) Page 8 of 32 [+] Feedback SL811HS USB-A/USB-B Host Transfer Count Register (Read), USB Address (Write) [Address = 04h, 0Ch]. This register has two different functions depending on whether it is read or written. When read, this register contains the number of bytes remaining (from Host Base Length value) after a packet is transferred. For example, if the Base Length register is set to 0x040 and an IN Token was sent to the peripheral device. If, after the transfer is complete, the value of the Host Transfer Count is 0x10, the number of bytes actually transferred is 0x30. This is considered as an underflow indication. Table 8. USB-A / USB-B Host Transfer Count Register when READ [Address 04h, 0Ch] Bit 7 HTC7 Bit 6 HTC6 Bit 5 HTC5 Bit 4 HTC4 Bit 3 HTC3 Bit 2 HTC2 Bit 1 HTC1 Bit 0 HTC0 When written, this register contains the USB Device Address with which the Host communicates. Table 9. USB-A / USB-B USB Address when WRITTEN [Address 04h, 0Ch] Bit 7 0 DA6-DA0 DA7 Bit 6 DA6 Bit 5 DA5 Bit 4 DA4 Bit3 DA3 Bit 2 DA2 Bit 1 DA1 Bit 0 DA0 Device address, up to 127 devices can be addressed. Reserved bit must be set to zero. SL811HS Control Registers The next set of registers are the Control registers and control more of the operation of the chip instead of USB packet type of transfers. Table 10 is a summary of the control registers. Table 10. Control Registers Summary Register Name SL811H Control Register 1 Interrupt Enable Register Reserved Register Status Register SOF Counter LOW (Write)/HW Revision Register (Read) SOF Counter HIGH and Control Register 2 Memory Buffer SL811HS (hex) Address 05h 06h 07h 0Dh 0Eh 0Fh 10h-FFh Document 38-08008 Rev. *F Page 9 of 32 [+] Feedback SL811HS Control Register 1 [Address = 05h]. The Control Register 1 enables/disables USB transfer operation with control bits defined as follows. Table 11. Control Register 1 [Address 05h] Bit 7 Reserved Bit 6 Suspend Bit 5 USB Speed Bit 4 J-K state force Bit 3 USB Engine Reset Bit 2 Reserved Bit 1 Reserved Bit 0 SOF ena/dis Bit Position 7 6 5 4 3 Bit Name Reserved Suspend USB Speed J-K state force USB Engine Reset Function ‘0’ ’1’ = enable, ’0’ = disable. ’0’ setup for full speed, ’1’ setup low speed. See Table 12. USB Engine reset = ’1’. Normal set ’0’. When a device is detected, the first thing that to do is to send it a USB Reset to force it into its default address of zero. The USB 2.0 specification states that for a root hub a device must be reset for a minimum of 50 mS. Some existing firmware examples set bit 2, but it is not necessary. ‘0’ ’1’ = enable auto Hardware SOF generation; ’0’ = disable. In the SL811HS, bit 0 is used to enable hardware SOF autogeneration. The generation of SOFs continues when set to ‘0’, but SOF tokens are not output to USB. There are two cases when communicating with a low speed device. When a low speed device is connected directly to the SL811HS, bit 5 of Register 05h is set to ’1’ and bit 6 of register 0Fh, Polarity Swap, is set to ’1’ in order to change the polarity of D+ and D–. When a low speed device is connected via a HUB to SL811HS, bit 5 of Register 05h is set to ’0’ and bit 6 of register 0Fh is set to ’0’ in order to keep the polarity of D+ and D– for full speed. In addition, make sure that bit 7 of USB-A/USB-B Host Control registers [00h, 08h] is set to ’1’ for preamble generation. J-K Programming States [Bits 4 and 3 of Control Register 1, Address 05h] The J-K force state control and USB Engine Reset bits are used to generate a USB reset condition. Forcing K-state is used for Peripheral device remote wake up, resume, and other modes. These two bits are set to zero on power-up. 2 1 0 Reserved Reserved SOF ena/dis At power-up this register is cleared to all zeros. Low-power Modes [Bit 6 Control Register, Address 05h] When bit 6 (Suspend) is set to ’1’, the power of the transmit transceiver is turned off, the internal RAM is in suspend mode, and the internal clocks are disabled. Note Any activity on the USB bus (that is, K-State, etc.) resumes normal operation. To resume normal operation from the CPU side, a Data Write cycle (i.e., A0 set HIGH for a Data Write cycle) is done. This is a special case and not a normal direct write where the address is first written and then the data. To resume normal operation from the CPU side, you must do a Data Write cycle only. Low Speed/Full Speed Modes [Bit 5 Control Register 1, Address 05h] The SL811HS is designed to communicate with either full- or low speed devices. At power-up bit 5 is LOW, i.e., for full speed. Table 12. Bus Force States USB Engine Reset 0 0 1 1 J-K Force State 0 1 0 1 Function Normal operating mode Force USB Reset, D+ and D– are set LOW (SE0) Force J-State, D+ set HIGH, D– set LOW[2] Force K-State, D– set HIGH, D+ set LOW[3] Notes 2. Force K-State for low speed. 3. Force J-State for low speed. Document 38-08008 Rev. *F Page 10 of 32 [+] Feedback SL811HS USB Reset Sequence After a device is detected, write 08h to the Control register (05h) to initiate the USB reset, then wait for the USB reset time (root hub should be 50 ms) and additionally some types of devices such as a Forced J-state. Lastly, set the Control register (05h) back to 0h. After the reset is complete, the auto-SOF generation is enabled. SOF Packet Generation The SL811HS automatically computes the frame number and CRC5 by hardware. No CRC or SOF generation is required by external firmware for the SL811HS, although it can be done by sending an SOF PID in the Host PID, Device Endpoint register. To enable SOF generation, assuming host mode is configured: 1. Set up the SOF interval in registers 0x0F and 0x0E. 2. Enable the SOF hardware generation in this register by setting bit 0 = ‘1’. 3. Set the Arm bit in the USB-A Host Control register. Table 13. Interrupt Enable Register [Address 06h] Bit 7 Reserved Bit 6 Device Detect/Resume Bit Name Reserved Bit 5 Inserted/ Removed Bit 4 SOF Timer Interrupt Enable Register [Address = 06h]. The SL811HS provides an Interrupt Request Output, which is activated for a number of conditions. The Interrupt Enable register allows the user to select conditions that result in an interrupt that is issued to an external CPU through the INTRQ pin. A separate Interrupt Status register reflects the reason for the interrupt. Enabling or disabling these interrupts does not have an effect on whether or not the corresponding bit in the Interrupt Status register is set or cleared; it only determines if the interrupt is routed to the INTRQ pin. The Interrupt Status register is normally used in conjunction with the Interrupt Enable register and can be polled in order to determine the conditions that initiated the interrupt (See the description for the Interrupt Status Register). When a bit is set to ’1’ the corresponding interrupt is enabled. So when the enabled interrupt occurs, the INTRQ pin is asserted. The INTRQ pin is a level interrupt, meaning it is not deasserted until all enabled interrupts are cleared. Bit 3 Reserved Bit 2 Reserved Bit 1 USB-B DONE Bit 0 USB-A DONE Bit Position 7 6 Function ‘0’ Device Detect/Resume Enable Device Detect/Resume Interrupt. When bit 6 of register 05h (Control Register 1) is equal to ’1’, bit 6 of this register enables the Resume Detect Interrupt. Otherwise, this bit is used to enable Device Detection status as defined in the Interrupt Status register bit definitions. Inserted/Removed SOF Timer Enable Slave Insert/Remove Detection is used to enable/disable the device inserted/removed interrupt. 1 = Enable Interrupt for SOF Timer. This is typically at 1 mS intervals, although the timing is determined by the SOF Counter high/low registers. To use this bit function, bit 0 of register 05h must be enabled and the SOF counter registers 0E hand 0Fh must be initialized. ‘0’ ‘0’ USB-B Done Interrupt (see USB-A Done interrupt). USB-A Done Interrupt. The Done interrupt is triggered by one of the events that are logged in the USB Packet Status register. The Done interrupt causes the Packet Status register to update. 5 4 3 2 1 0 Reserved Reserved USB-B DONE USB-A DONE USB Address Register, Reserved, Address [Address = 07h]. This register is reserved for the device USB Address in Slave operation. It should not be written by the user in host mode. Registers 08h-0Ch Host-B registers. Registers 08h-0Ch have the same definition as registers 00h-04h except they apply to Host-B instead of Host-A. Document 38-08008 Rev. *F Page 11 of 32 [+] Feedback SL811HS Interrupt Status Register, Address [Address = 0Dh]. The Interrupt Status register is a READ/WRITE register providing interrupt status. Interrupts are cleared by writing to this register. To clear a specific interrupt, the register is written with corresponding bit set to ’1’. Table 14. Interrupt Status Register [Address 0Dh] Bit 7 D+ Bit 6 Bit 5 Bit 4 SOF timer Bit 3 Reserved Bit 2 Reserved Bit 1 USB-B Bit 0 USB-A Device Insert/Remove Detect/Resume Bit Name D+ Bit Position 7 Function Value of the Data+ pin. Bit 7 provides continuous USB Data+ line status. Once it is determined that a device is inserted (as described below) with bits 5 and 6, bit 7 is used to detect if the inserted device is low speed (0) or full speed (1). 6 Device Detect/Resume Device Detect/Resume Interrupt. Bit 6 is shared between Device Detection status and Resume Detection interrupt. When bit-6 of register 05h is set to one, this bit is the Resume detection Interrupt bit. Otherwise, this bit is used to indicate the presence of a device, ’1’ = device ‘Not present’ and ’0’ = device ‘Present.’ In this mode, check this bit along with bit 5 to determine whether a device has been inserted or removed. Insert/Remove Device Insert/Remove Detection. Bit 5 is provided to support USB cable insertion/removal for the SL811HS in host mode. This bit is set when a transition from SE0 to IDLE (device inserted) or from IDLE to SE0 (device removed) occurs on the bus. ‘1’ = Interrupt on SOF Timer. ‘0’ ‘0’ USB-B Done Interrupt. (See description in Interrupt Enable Register [address 06h].) USB-A Done Interrupt. (See description in Interrupt Enable Register [address 06h].) 5 4 3 2 1 0 SOF timer Reserved Reserved USB-B USB-A Current Data Set Register/Hardware Revision/SOF Counter LOW [Address = 0Eh]. This register has two modes. Read from this register indicates the current SL811HS silicon revision. Table 15. Hardware Revision when Read [Address 0Eh] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Reserved Function SL811HS rev1.2 Read = 1H; SL811HS rev1.5 Read = 2. Read is zero. Reserved for slave. Bit 1 Bit 0 Hardware Revision Bit Position 7-4 3-2 1-0 Bit Name Hardware Revision Reserved Reserved Writing to this register sets up auto generation of SOF to all connected peripherals. This counter is based on the 12 MHz clock and is not dependent on the crystal frequency. To set up a 1 ms timer interval, the software must set up both SOF counter registers to the proper values. Document 38-08008 Rev. *F Page 12 of 32 [+] Feedback SL811HS Table 16. SOF Counter LOW Address when Written [Address 0Eh] Bit 7 SOF7 Bit 6 SOF6 Bit 5 SOF5 Bit 4 SOF4 Bit 3 SOF3 Bit 2 SOF2 Bit 1 SOF1 Bit 0 SOF0 Example: To set up SOF for 1 ms interval, SOF counter register 0Eh should be set to E0h. SOF Counter High/Control Register 2 [Address = 0Fh]. When read, this register returns the value of the SOF counter divided by 64. The software must use this register to determine the available bandwidth in the current frame before initiating any USB transfer. In this way, the user is able to avoid babble conditions on the USB. For example, to determine the available bandwidth left in a frame do the following. Maximum number of clock ticks in 1 ms time frame is 12000 (1 count per 12 MHz clock period, or approximately 84 ns.) The value read back in Register 0FH is the (count × 64) × 84 ns = time remaining in current frame. USB bit time = one 12 MHz period. Value of register 0FH Available bit times left are between BBH 12000 bits to 11968 (187 × 64) bits BAH 11968 bits to 11904 (186 × 64) bits Note: Any write to the 0Fh register clears the internal frame counter. Write register 0Fh at least once after power-up. The internal frame counter is incremented after every SOF timer tick. The internal frame counter is an 11-bit counter, which is used to track the frame number. The frame number is incremented after each timer tick. Its contents are transmitted to the slave every millisecond in a SOF packet. Table 17. SOF High Counter when Read [Address 0Fh] Bit 7 C13 Bit 6 C12 Bit 5 C11 Bit 4 C10 Bit 3 C9 Bit 2 C8 Bit 1 C7 Bit 0 C6 When writing to this register the bits definition are defined as follows. Table 18. Control Register 2 when Written [Address 0Fh] Bit 7 SL811HS Master/Slave selection Bit Position 7 6 5-0 Bit 6 SL811HS D+/D– Data Polarity Swap Bit Name SL811HS Master/Slave selection SL811HS D+/D– Data Polarity Swap SOF High Counter Register Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SOF High Counter Register Function Master = 1, Slave = 0. ’1’ = change polarity (low speed) ’0’ = no change of polarity (full speed). Write a value or read it back to SOF High Counter Register. hardware SOF generation. To load both HIGH and LOW registers with the proper values, the user must follow this sequence: 1. Write E0h to register 0Eh. This sets the lower byte of the SOF counter 2. Write AEh to register 0Fh, AEh configures the part for full speed (no change of polarity) Host with bits 5–0 = 2Eh for upper portion of SOF counter. 3. Enable bit 0 in register 05h. This enables hardware generation of SOF. 4. Set the ARM bit at address 00h. This starts the SOF generation. Note Any write to Control register 0Fh enables the SL811HS full features bit. This is an internal bit of the SL811HS that enables additional features. The USB-B register set is used when SL811HS full feature bit is enabled. Example. To set up host to generate 1 ms SOF time: The register 0Fh contains the upper 6 bits of the SOF timer. Register 0Eh contains the lower 8 bits of the SOF timer. The timer is based on an internal 12 MHz clock and uses a counter, which counts down to zero from an initial value. To set the timer for 1 ms time, the register 0Eh is loaded with value E0h and register 0Fh (bits 0–5) is loaded with 2Eh. To start the timer, bit 0 of register 05h (Control Register 1) is set to ’1’, which enables Document 38-08008 Rev. *F Page 13 of 32 [+] Feedback SL811HS Table 19. SL811HS Slave Mode Registers Register Name EP Control Register EP Base Address Register EP Base Length Register EP Packet Status Register EP Transfer Count Register Register Name Control Register 1 Interrupt Enable Register USB Address Register SOF Low Register (read only) SOF High Register (read only) Reserved DMA Total Count Low Register DMA Total Count High Register Reserved Memory Buffer 05h 06h 07h 15h 16h 17h 35h 36h 37h 40h – FFh Endpoints 0–3 Register Addresses Each endpoint set has a group of five registers that are mapped within the SL811HS memory. The register sets have address assignmenEndpoint 0-3 Register Addressests as shown in the following table. Table 20. Endpoint 0-3 Register Addresses Endpoint Register Set Endpoint 0 – a Endpoint 0 – b Endpoint 1 – a Endpoint 1 – b Endpoint 2 – a Endpoint 2 – b Endpoint 3 – a Endpoint 3 – b Address (in Hex) 00 - 04 08 - 0C 10 - 14 18 - 1C 20 - 24 28 - 2C 30 - 34 38 - 3C Endpoint specific register addresses EP 0 – A EP 0 - B 00h 01h 02h 03h 04h 08h 09h 0Ah 0Bh 0Ch EP 1 – A 10h 11h 12h 13h 14h EP 1 - B 18h 19h 1Ah 1Bh 1Ch EP 2 - A 20h 21h 22h 23h 24h 0Dh 0Eh 0Fh 1Dh1Fh 25h-27h 2Dh-2Fh EP 2 - B EP 3 - A 28h 29h 2Ah 2Bh 2Ch 30h 31h 0x32 0x33 0x34 EP 3 - B 0x38 0x39 0x3A 0x3B 0x3C Miscellaneous register addresses Interrupt Status Register Current Data Set Register Control Register 2 Reserved Reserved Reserved When in slave mode, the registers in the SL811HS are divided into two major groups. The first group contains Endpoint registers that manage USB control transactions and data flow. The second group contains the USB Registers that provide the control and status information for all other operations. Endpoint Registers Communication and data flow on USB is implemented using endpoints. These uniquely identifiable entities are the terminals of communication flow between a USB host and USB devices. Each USB device is composed of a collection of independently operating endpoints. Each endpoint has a unique identifier, which is the Endpoint Number. For more information, see USB Specification 1.1 section 5.3.1. The SL811HS supports four endpoints numbered 0–3. Endpoint 0 is the default pipe and is used to initialize and generically manipulate the device to configure the logical device as the Default Control Pipe. It also provides access to the device's configuration information, allows USB status and control access, and supports control transfers. Endpoints 1–3 support Bulk, Isochronous, and Interrupt transfers. Endpoint 3 is supported by DMA. Each endpoint has two sets of registers—the 'A' set and the 'B' set. This allows overlapped operation where one set of parameters is set up and the other is transferring. Upon completion of a transfer to an endpoint, the ‘next data set’ bit indicates whether set 'A' or set 'B' is used next. The ‘armed’ bit of the next data set indicates whether the SL811HS is ready for the next transfer without interruption. For each endpoint set (starting at address Index = 0), the registers are mapped as shown in the following table. Table 21. Endpoint Register Indices Endpoint Register Sets (for Endpoint n starting at register position Index=0) Index Index + 1 Index + 2 Index + 3 Index + 4 Endpoint n Control Endpoint n Base Address Endpoint n Base Length Endpoint n Packet Status Endpoint n Transfer Count Document 38-08008 Rev. *F Page 14 of 32 [+] Feedback SL811HS Endpoint Control Registers Endpoint n Control Register [Address a = (EP# * 10h), b = (EP# * 10h)+8]. Each endpoint set has a Control register defined as follows: Table 22. Endpoint Control Register [Address EP0a/b:00h/08h, EP1a/b:10h/18h, EP2a/b:20h/28h, EP3a/b:30h/38h] 7 Reserved Bit Position 7 6 5 4 3 2 1 0 6 Sequence Bit Name Reserved Sequence Send STALL ISO Next Data Set Direction Enable Arm Sequence bit. '0' if DATA0, '1' if DATA1. When set to ‘1’, sends Stall in response to next request on this endpoint. When set to '1', allows Isochronous mode for this endpoint. '0' if next data set is ‘A’, '1' if next data set is 'B'. When Direction = '1', transmit to Host (IN). When Direction = '0', receive from Host (OUT). When Enable = '1', allows transfers for this endpoint. When set to ‘0’, USB transactions are ignored. If Enable = '1' and Arm = '0', the endpoint returns NAKs to USB transmissions. Allows enabled transfers when set =’1’. Clears to '0' when transfer is complete. 5 Send STALL Function 4 ISO 3 Next Data Set 2 Direction 1 Enable 0 Arm Endpoint Base Address [Address a = (EP# * 10h)+1, b = (EP# * 10h)+9]]. Pointer to memory buffer location for USB reads and writes. Table 23. Endpoint Base Address Reg [Address; EP0a/b:01h/09h, EP1a/b:11h/19h, EP2a/b:21h/29h, EP3a/b:31h/39h] 7 EPxADD7 6 EPxADD6 5 EPxADD5 4 EPxADD4 3 EPxADD3 2 EPxADD2 1 EPxADD1 0 EPxADD0 Endpoint Base Length [Address a = (EP# * 10h)+2, b = (EP# * 10h)+A]. The Endpoint Base Length is the maximum packet size for IN/OUT transfers with the host. Essentially, this designates the largest packet size that is received by the SL811HS with an OUT transfer, or it designates the size of the data packet sent to the host for IN transfers. Table 24. Endpoint Base Length Reg [Address EP0a/b:02h/0Ah, EP1a/b:12h/1Ah, EP2a/b:22h/2Ah, EP3a/b:32h/3Ah] 7 EPxLEN7 6 EPxLEN6 5 EPxLEN5 4 EPxLEN4 3 EPxLEN3 2 EPxLEN2 1 EPxLEN1 0 EPxLEN0 Document 38-08008 Rev. *F Page 15 of 32 [+] Feedback SL811HS Endpoint Packet Status [Address a = (EP# * 10h)+3, b = (EP# * 10h)+Bh]. The packet status contains information relative to the packet that is received or transmitted. The register is defined as follows: Table 25. Endpoint Packet Status Reg [Address EP0a/b:03h/0Bh, EP1a/b:13h/1Bh, EP2a/b:23h/2Bh, EP3a/b:33h/3Bh] 7 Reserved Bit Position 7 6 5 6 Reserved Bit Name Reserved Reserved Overflow 5 Overflow Function Not applicable. Not applicable. Overflow condition - maximum length exceeded during receives. This is considered a serious error. The maximum number of bytes that can be received by an endpoint is determined by the Endpoint Base Length register for each endpoint. The Overflow bit is only relevant during OUT Tokens from the host. '1' indicates Setup Packet. If this bit is set, the last packet received was a setup packet. This bit indicates if the last packet was a DATA0 (0) or DATA1 (1). This bit is not used in slave mode. Error detected in transmission, this includes CRC5/16 and PID errors. Transmission Acknowledge. register was set for 64 (40h) bytes and an OUT token was sent to the endpoint that only had 16 (10h) bytes, the Endpoint Transfer Count register has a value of 48 (30h). If more bytes were sent in an OUT token then the Endpoint Base Length register was programmed for, the overflow flag is set in the Endpoint Packet Status register and is considered a serious error. 4 Setup 3 Sequence 2 Time-out 1 Error 0 ACK 4 3 2 1 0 Setup Sequence Time-out Error ACK Endpoint Transfer Count [Address a = (EP# * 10h)+4, b = (EP# * 10h)+Ch]. As a peripheral device, the Endpoint Transfer Count register is only important with OUT tokens (host sending the slave data). When a host sends the peripheral data, the Transfer Count register contains the difference between the Endpoint Base Length and the actual number of bytes received in the last packet. In other words, if the Endpoint Base Length Table 26. Endpoint Transfer Count Reg [Address EP0a/b:04h/0Ch, EP1a/b:14h/1Ch, EP2a/b:24h/2Ch, EP3a/b:34h/3Ch] 7 EPxCNT7 6 EPxCNT6 5 EPxCNT5 4 EPxCNT4 3 EPxCNT3 2 EPxCNT2 1 EPxCNT1 0 EPxCNT0 USB Control Registers The USB Control registers manage communication and data flow on the USB. Each USB device is composed of a collection of independently operating endpoints. Each endpoint has a unique identifier, which is the Endpoint Number. For more details about USB endpoints, refer to the USB Specification 1.1, Section 5.3.1. The Control and Status registers are mapped as follows: Table 27. USB Control Registers Register Name Control Register 1 Interrupt Enable Register USB Address Register Interrupt Status Register Current Data Set Register Control Register 2 SOF Low Byte Register SOF High Byte Register DMA Total Count Low Byte Register DMA Total Count High Byte Register Address (in Hex) 05h 06h 07h 0Dh 0Eh 0Fh 15h 16h 35h 36h Document 38-08008 Rev. *F Page 16 of 32 [+] Feedback SL811HS Control Register 1, Address [05h]. The Control register enables or disables USB transfers and DMA operations with control bits. Table 28. Control Register 1 [Address 05h] 7 Reserved Bit Position 7 6 5 4 3 2 1 0 6 STBYD Bit Name Reserved STBYD SPSEL 5 SPSEL Function Reserved bit - must be set to '0'. XCVR Power Control. ‘1’ sets XCVR to low power. For normal operation set this bit to ‘0’. Suspend mode is entered if bit 6 = ‘1’ and bit ‘0’ (USB Enable) = ‘0’. Speed Select. ‘0’ selects full speed. ‘1’ selects low speed (also see Table 33 on page 18). 4 J-K1 3 J-K0 2 DMA Dir 1 DMA Enable 0 USB Enable J-K Force State J-K1 and J-K0 force state control bits are used to generate various USB bus conditions. USB Engine Reset Forcing K-state is used for Peripheral device remote wake-up, Resume, and other modes. These two bits are set to zero on power-up, see Table 12 on page 10 for functions. DMA Dir DMA Enable USB Enable DMA Transfer Direction. Set equal to ‘1’ for DMA READ cycles from SL811HS. Set equal to ‘0’ for DMA WRITE cycles. Enable DMA operation when equal to ‘1’. Disable = ‘0’. DMA is initiated when DMA Count High is written. Overall Enable for Transfers. ‘1’ enables and’ ‘0 disables. Set this bit to ‘1’ to enable USB communication. Default at power-up = ‘0’ JK-Force State 0 0 1 1 USB Engine Reset 0 1 0 1 Normal operating mode Function Force SE0, D+ and D– are set low Force K-State, D– set high, D+ set low Force J-State, D+ set high, D– set low the description in section Interrupt Status Register, Address [0Dh]). When a bit is set to ‘1’, the corresponding interrupt is enabled. Setting a bit in the Interrupt Enable register does not effect the Interrupt Status register’s value; it just determines which interrupts are output on INTRQ. Interrupt Enable Register, Address [06h] . The SL811HS provides an Interrupt Request Output that is activated resulting from a number of conditions. The Interrupt Enable register allows the user to select events that generate the Interrupt Request Output assertion. A separate Interrupt Status register is read in order to determine the condition that initiated the interrupt (see Table 29. Interrupt Enable Register [Address: 06h] 7 DMA Status 6 USB Reset 5 SOF Received 4 DMA Done 3 Endpoint 3 Done 2 Endpoint 2 Done 1 Endpoint 1 Done 0 Endpoint 0 Done Bit Position 7 6 5 4 3 2 1 0 Bit Name DMA Status USB Reset SOF Received DMA Done Endpoint 3 Done Endpoint 2 Done Endpoint 1 Done Endpoint 0 Done Function When equal to ‘1’, indicates DMA transfer is in progress. When equal to ‘0’, indicates DMA transfer is complete. Enable USB Reset received interrupt when = ‘1’. Enable SOF Received Interrupt when = ‘1’. Enable DMA done Interrupt when = ‘1’. Enable Endpoint 3 done Interrupt when = ‘1’. Enable Endpoint 2 done Interrupt when = ‘1’. Enable Endpoint 1 done Interrupt when = ‘1’. Enable Endpoint 0 done Interrupt when = ‘1’. Document 38-08008 Rev. *F Page 17 of 32 [+] Feedback SL811HS USB Address Register, Address [07h] This register contains the USB Device Address after assignment by USB host during configuration. On power-up or reset, USB Address register is set to Address 00h. After USB configuration and address assignment, the device recognizes only USB transactions directed to the address contained in the USB Address register. Table 30. USB Address Register [Address 07h] 7 USBADD7 6 USBADD6 5 USBADD5 4 USBADD4 3 USBADD3 2 USBADD2 1 USBADD1 0 USBADD0 Interrupt Status Register, Address [0Dh] This read/write register serves as an Interrupt Status register when it is read, and an Interrupt Clear register when it is written. To clear an interrupt, write the register with the appropriate bit set to ‘1’. Writing a ‘0’ has no effect on the status. Table 31. Interrupt Status Register [Address 0Dh] 7 DMA Status 6 USB Reset 5 SOF Received 4 DMA Done 3 Endpoint 3 Done 2 Endpoint 2 Done 1 Endpoint 1 Done 0 Endpoint 0 Done Bit Position 7 6 5 4 3 2 1 0 Bit Name DMA Status USB Reset SOF Received DMA Done Endpoint 3 Done Endpoint 2 Done Endpoint 1 Done Endpoint 0 Done Function When equal to ‘1’, indicates DMA transfer is in progress. When equal to 0, indicates DMA transfer is complete. An interrupt is not generated when DMA is complete. USB Reset Received Interrupt. SOF Received Interrupt. DMA Done Interrupt. Endpoint 3 Done Interrupt. Endpoint 2 Done Interrupt. Endpoint 1 Done Interrupt. Endpoint 0 Done Interrupt. Current Data Set Register, Address [0Eh]. This register indicates current selected data set for each endpoint. Table 32. Current Data Set Register [Address 0Eh] 7 6 Reserved Bit Position 7-4 3 2 1 0 Bit Name Reserved Endpoint 3 Done Endpoint 2 Done Endpoint 1 Done Endpoint 0 Done Function Not applicable. Endpoint 3a = 0, Endpoint 3b = 1. Endpoint 2a = 0, Endpoint 2b = 1. Endpoint 1a = 0, Endpoint 1b = 1. Endpoint 0a = 0, Endpoint 0b = 1. 5 4 3 Endpoint 3 2 Endpoint 2 1 Endpoint 1 0 Endpoint 0 Control Register 2, Address [0Fh]. Control Register 2 is used to control if the device is configured as a master or a slave. It can change the polarity of the Data+ and Data- pins to accommodate both full- and low speed operation. Table 33. Control Register 2 [Address 0Fh] Bit 7 SL811HS Master/Slave selection Bit 6 SL811HS D+/D– Data Polarity Swap Bit 5 Bit 4 Bit 3 Reserved Bit 2 Bit 1 Bit 0 Document 38-08008 Rev. *F Page 18 of 32 [+] Feedback SL811HS Bit Position 7 Bit Name SL811HS Master/Slave selection Function Master = ‘1’ Slave = ‘0’ 6 5-0 SL811HS D+/D– ’1’ = change polarity (low speed) Data Polarity Swap ’0’ = no change of polarity (full speed) Reserved NA ferred between a peripheral to the SL811HS. The count may sometimes require up to 16 bits, therefore the count is represented in two registers: Total Count Low and Total Count High. EP3 is only supported with DMA operation. DMA Total Count High Register, Address [36h]. The DMA Total Count High register contains the high order 8 bits of DMA count. When written, this register enables DMA if the DMA Enable bit is set in Control Register 1. The user should always write Low Count register first, followed by a write to High Count register, even if high count is 00h. SOF Low Register, Address [15h]. Read only register contains the 7 low order bits of Frame Number in positions: bit 7:1. Bit 0 is undefined. Register is updated when a SOF packet is received. Do not write to this register. SOF High Register, Address [16h]. Read only register contains the 4 low order bits of Frame Number in positions: bit 7:4. Bits 3:0 are undefined and should be masked when read by the user. This register is updated when a SOF packet is received. The user should not write to this register. DMA Total Count Low Register, Address [35h]. The DMA Total Count Low register contains the low order 8 bits of DMA count. DMA total count is the total number of bytes to be trans- Document 38-08008 Rev. *F Page 19 of 32 [+] Feedback SL811HS Physical Connections These parts are offered in 48-pin TQFP package. The 48-pin TQFP package is the SL811HST-AXC. 48-Pin TQFP Physical Connections 48-Pin TQFP AXC Pin Layout Figure 4. 48-Pin TQFP AXC USB Host/Slave Controller Pin Layout [4] NC NC NC 1 NC NC nWR nCS CM VDD1 Data+ DataUSBGnd NC NC NC 13 NC D7 nDACK* VDD nRD NC nDRQ* A0 M/S 37 48 36 NC NC NC D6 D5 48-Pin TQFP D4 GND D3 D2 D1 NC 12 24 25 NC nRST GND Clk/X1 VDD D0 INTRQ X2 NC NC NC NC NC *See Table 34 on page 21 for Pin and Signal Description for Pins 43 and 44 in Host Mode. The diagram below illustrates a simple +3.3 V voltage source. Figure 5. Sample VDD Generator +5V (USB) R1 4 5 Ohms 2 N2222 Zener 3 .9v, 1N52288CTGND + 3.3 V (VDD) Sample VDD Generator Note 4. NC. Indicates No Connection. NC Pins must be left unconnected. Document 38-08008 Rev. *F Page 20 of 32 [+] Feedback SL811HS USB Host Controller Pins Description The SL811HST-AXC is packaged in a 48-pin TQFP. These devices require a 3.3 VDC power source and an external 12 or 48 MHz crystal or clock.. Table 34. Pin and Signal Description for Pins 48-Pin TQFP AXC Pin No. 1 2 3 4 5[5] 6 7 8 9 10 11 12 13 14 15[6] 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin Type NC NC IN IN IN VDD1 BIDIR BIDIR GND NC NC NC NC NC VDD IN OUT IN OUT GND BIDIR NC NC NC NC NC BIDIR BIDIR BIDIR GND BIDIR BIDIR Pin Name NC NC nWR nCS CM +3.3 VDC DATA + DATA USB GND NC NC NC NC NC +3.3 VDC CLK/X1 X2 nRST INTRQ GND D0 NC NC NC NC NC D1 D2 D3 GND D4 D5 No connection. No connection. Write Strobe Input. An active LOW input used with nCS to write to registers/data memory. Active LOW 48-Pin TQFP Chip select. Used with nRD and nWr when accessing the 48-Pin TQFP. Clock Multiply. Select 12 MHz/48 MHz Clock Source. Power for USB Transceivers. VDD1 may be connected to VDD. USB Differential Data Signal HIGH Side. USB Differential Data Signal LOW Side. Ground Connection for USB. No connection. No connection. No connection. No connection. No connection. Device VDD Power. Clock or External Crystal X1 connection. The X1/X2 Clock requires external 12 or 48 MHz matching crystal or clock source. External Crystal X2 connection. Device active low reset input. Active HIGH Interrupt Request output to external controller. Device Ground. Data 0. Microprocessor Data/Address Bus. No connection. No connection. No connection. No connection. No connection. Data 1. Microprocessor Data/Address Bus. Data 2. Microprocessor Data/Address Bus. Data 3. Microprocessor Data/Address Bus. Device Ground. Data 4. Microprocessor Data/Address Bus. Data 5. Microprocessor Data/Address Bus. Pin Description Notes 5. The CM Clock Multiplier pin must be tied HIGH for a 12 MHz clock source and tied to ground for a 48 MHz clock source. 6. VDD can be derived from the USB supply. See Figure 5 on page 20. Document 38-08008 Rev. *F Page 21 of 32 [+] Feedback SL811HS Table 34. Pin and Signal Description for Pins 48-Pin TQFP AXC Pin No. 33 34 35 36 37 38 39 40 41 42[8] 43 Pin Type BIDIR NC NC NC NC NC BIDIR IN VDD IN IN Pin Name D6 NC NC NC NC NC D7 M/S +3.3 VDC A0 nDACK Pin Description Data 6. Microprocessor Data/Address Bus. No connection. No connection. No connection. No connection. No connection. Data 7. Microprocessor Data/Address Bus. Master/Slave Mode Select. ’1’ selects Slave. ’0’ = Master. Device VDD Power. A0 = ’0’. Selects address pointer. Register A0 = ’1’. Selects data buffer or register. DMA Acknowledge. An active LOW input used to interface to an external DMA controller. DMA is enabled only in slave mode. In host mode, the pin should be tied HIGH (logic ’1’). DMA Request. An active LOW output used with an external DMA controller. nDRQ and nDACK form the handshake for DMA data transfers. In host mode, leave the pin unconnected. Read Strobe Input. An active LOW input used with nCS to read registers/data memory. No connection. No connection. No connection. 44 OUT nDRQ 45 46 47 48 IN NC NC NC nRD NC NC NC Figure 6. Package Markings (48-Pin TQFP) P art Number YYW W -X.X XXXX YYWW = Date code XXXX = Product code X.X = Silicon revision number Notes 7. VDD can be derived from the USB supply. Figure 5 on page 20 shows a simple method to provide 3.3 V/30 mA. Another option is to use a Torex Semiconductor, Ltd. 3.3 V SMD regulator (part number XC62HR3302MR). 8. The A0 Address bit is used to access address register or data registers in I/O Mapped or Memory Mapped applications. Document 38-08008 Rev. *F Page 22 of 32 [+] Feedback SL811HS Electrical Specifications Absolute Maximum Ratings This section lists the absolute maximum ratings of the SL811HS. Exceeding maximum ratings may shorten the useful life of the device. User guidelines are not tested.. Description Storage Temperature Voltage on any pin with respect to ground Power Supply Voltage (VDD) Power Supply Voltage (VDD1) Lead Temperature (10 seconds) –40°C to 125°C –0.3 V to 6.0 V 4.0 V 4.0 V 180°C Condition Recommended Operating Condition Parameter Power Supply Voltage, VDD Power Supply Voltage, VDD1 Operating Temperature Crystal Requirements, (X1, X2) Operating Temperature Range Parallel Resonant Frequency Frequency Drift over Temperature Accuracy of Adjustment Series Resistance Shunt Capacitance Load Capacitance Drive Level Mode of Vibration Third Overtone[9] 20 μW 3 pF 20 pF 5 mW Min 3.0 V 3.0 V 0°C Typical 3.3 V Max 3.45 V 3.45 V 65°C Min 0°C Typical Max 65°C 48 MHz ±50 ppm ±30 ppm 100 Ohms 6 pF External Clock Input Characteristics (X1) Parameter Clock Input Voltage at X1 (X2 Open) Clock Frequency[10] Min 1.5 V 48 MHz Typical Max Notes 9. Fundamental mode for 12 MHz Crystal. 10. The SL811HS can use a 12 MHz Clock Source. Document 38-08008 Rev. *F Page 23 of 32 [+] Feedback SL811HS DC Characteristics Parameter VIL VIH VOL VOH IOH IOL ILL CIN ICC [11] Description Input Voltage LOW Input Voltage HIGH (5 V Tolerant I/O) Output Voltage LOW (IOL = 4 mA) Output Voltage HIGH (IOH = –4 mA) Output Current HIGH Output Current LOW Input Leakage Input Capacitance Supply Current (VDD) inc USB at FS Supply Current (VDD) Suspend w/Clk & Pll Enb Supply Current (VDD) Suspend no Clk & Pll Dis Supply Current (VDD1) Transceiver Supply Current in Suspend Min –0.3 V 2.0 V 2.4 V 4 mA 4 mA Typ Max 0.8 V 6.0 V 0.4 V ±1 μA 10 pF 21 mA 4.2 mA 50 μA 25 mA 5 mA 60 μA 10 mA 10 μA ICCsus1[12] ICCsus2 IUSB IUSBSUS [13] USB Host Transceiver Characteristics Parameter VIHYS VUSBIH VUSBIL VUSBOH VUSBOL ZUSBH IUSB [15] Description Differential Input Sensitivity (Data+, Data–) USB Input Voltage HIGH Driven USB Input Voltage LOW USB Output Voltage HIGH USB Output Voltage LOW Output Impedance HIGH STATE Output Impedance LOW STATE Transceiver Supply p-p Current (3.3 V) Min 0.2 V 2.0 V 0.8 V 2.0 V 0.0 V 36 Ohms 36 Ohms Typ[14] Max 200 mV 0.3 V 42 Ohms 42 Ohms 10 mA at FS ZUSBL[15] Every VDD pin, including USB VDD, must have a decoupling capacitor to ensure clean VDD (free of high frequency noise) at the chip input point (pin) itself. The best way to do this is to connect a ceramic capacitor (0.1 μF, 6 V) between the pin itself and a good ground. Keep capacitor leads as short as possible. Use surface mount capacitors with the shortest traces possible (the use of a ground plane is strongly recommended). This product was tested as compliant to the USB-IF specification under the test identification number (TID) of 40000689 and is listed on the USB-IF’s integrators list. Notes 11. ICC measurement includes USB Transceiver current (IUSB) operating at full speed. 12. ICCsus1 measured with 12 MHz Clock Input and Internal PLL enabled. Suspend set –(USB transceiver and internal Clocking disabled). 13. ICCsus2 measured with external Clock, PLL disabled, and Suspend set. For absolute minimum current consumption, ensure that all inputs to the device are at static logic level. 14. All typical values are VDD = 3.3 V and TAMB= 25°C. 15. ZUSBX impedance values includes an external resistor of 24 Ohms ± 1% (SL811HS revision 1.2 requires external resistor values of 33 Ohms ±1%). Document 38-08008 Rev. *F Page 24 of 32 [+] Feedback SL811HS Bus Interface Timing Requirements I/O Write Cycle twr twrhigh nWR twasu twahld twdsu A0 twdsu twdhld Register or Memory Address twcsu twshld twdhld D0-D7 DATA nCS Tcscs See Note. I/O Write Cycle to Register or Memory Buffer Parameter tWR tWCSU tWSHLD tWASU tWAHLD tWDSU tWDHLD tCSCS tWRHIGH Description Write pulse width Chip select set-up to nWR LOW Chip select hold time After nWR HIGH A0 address set-up time A0 address hold time Data to Write HIGH set-up time Data hold time after Write HIGH nCS inactive to nCS* asserted NWR HIGH Min 85 ns 0 ns 0 ns 85 ns 10 ns 85 ns 5 ns 85 ns 85 ns Typ Max Note nCS an be held LOW for multiple Write cycles provided nWR is cycled. Write Cycle Time for Auto Inc Mode Writes is 170 ns minimum. Document 38-08008 Rev. *F Page 25 of 32 [+] Feedback SL811HS I/O Read Cycle twr twrrdl nWR twasu twahld A0 trdp nRD twdsu twdhld Register or Memory Address trcsu tracc trdhld D0-D7 DATA trshld nCS Tcscs *Note I/O Read Cycle from Register or Memory Buffer Parameter tWR tRD tWCSU tWASU tWAHLD tWDSU tWDHLD tRACC tRDHLD tRCSU tRSHLD TCSCS* tWRRDL Write pulse width Read pulse width Chip select set-up to nWR A0 address set-up time A0 address hold time Data to Write HIGH set-up time Data hold time after Write HIGH Data valid after Read LOW Data hold after Read HIGH Chip select LOW to Read LOW NCS hold after Read HIGH nCS inactive to nCS *asserted nWR HIGH to nRD LOW Description Min 85 ns 85 ns 0 ns 85 ns 10 ns 85 ns 5 ns 25 ns 40 ns 0 ns 0 ns 85 ns 85ns 85 ns Typ Max Note nCS can be kept LOW during multiple Read cycles provided nRD is cycled. Rd Cycle Time for Auto Inc Mode Reads is 170 ns minimum. Document 38-08008 Rev. *F Page 26 of 32 [+] Feedback SL811HS DMA Write Cycle t dakrq tackrq nDRQ tdack nD A C K t dw rlo D 0-D 7 tdsu D AT A t dw rp tdhld nW R t ackw rh D A W R IT E C Y C SL811 D M MA Write Cycle LE TIM IN G Parameter tdack tdwrlo tdakrq tdwrp tdhld tdsu tackrq tackwrh twrcycle nDACK low nDACK to nWR low delay nDACK low to nDRQ high delay nWR pulse width Data hold after nWR high Data set-up to nWR strobe low NDACK high to nDRQ low NDACK high to nDRQ low DMA Write Cycle Time Description Min 80 ns 5 ns 5 ns 65 ns 5 ns 60 ns 5 ns 5 ns 150 ns Typ Max Note nWR must go low after nDACK goes low in order for nDRQ to clear. If this sequence is not implemented as requested, the next nDRQ is not inserted. Document 38-08008 Rev. *F Page 27 of 32 [+] Feedback SL811HS DMA Read Cycle nDRQ nDACK t dckdr t dack t ddrdlo tdakrq D 0-D 7 tdaccs t drdp DATA tdhld nRD SL811 DMA Read C Y C L E T IM S L 811 D M A R E A DCycle Timing IN G Parameter tdack tddrdlo tdckdr tdrdp tdhld tddaccs tdrdack tdakrq trdcycle nDACK low nDACK to nRD low delay nDACK low to nDRQ high delay nRD pulse width Date hold after nDACK high Data access from nDACK low nRD high to nDACK high nDRQ low after nDACK high DMA Read Cycle Time Description Min 100 ns 0 ns 5 ns 90 ns 5 ns 85 ns 0 ns 5 ns 150 ns Typ Max Note Data is held until nDACK goes high regardless of state of nREAD. Reset Timing treset nRST tioact nRD or nWR Reset Timing Parameter tRESET tIOACT Description nRst Pulse width nRst HIGH to nRD or nWR active Min 16 clocks 16 clocks Typ Max Note Clock is 48 MHz nominal. Document 38-08008 Rev. *F Page 28 of 32 [+] Feedback SL811HS Clock Timing Specifications tclk CLK thigh tlow tfall trise CClock Timing LOCK TIMING Parameter tCLK tHIGH tLOW tRISE tFALL Description Clock Period (48 MHz) Clock HIGH Time Clock LOW Time Clock Rise Time Clock Fall Time Clock Duty Cycle 45% Min 20.0 ns 9 ns 9 ns Typ 20.8 ns 11 ns 11 ns 5.0 ns 5.0 ns 55% Max Ordering Information Part Number SL811HST-AXC 48-pin Pb-free Package Type – Ordering Code Definitions SL811 HST - A X C Temperature range: C = Commercial X = Pb-free Package Type: TQFP Host/slave Part number Document 38-08008 Rev. *F Page 29 of 32 [+] Feedback SL811HS Package Diagram Figure 7. 48-Pin TQFP 7 × 7 × 1.4 mm 51-85135 *B Acronyms Table 35. Acronyms Used in this Document Acronym CMOS CPU CRC DMA DPLL I/O PCMCIA RAM SIE SOF SRAM USB Description Complementary Metal Oxide Semiconductor Central Processing Unit Cyclical Redundancy Check Direct Memory Access Dynamic Phase Locked Loop Input Output Personal Computer Memory Card International Association Random Access Memory Serial Interface Engine Start of Frame Static Random Access Memory Universal Serial Bus Document Conventions Units of Measure Table 36. Units of Measure Symbol mA Mbps MHz mV mW ns pF ppm V VDC milliamps Megabits per second MegaHertz millivolts milliwatts nanoseconds picofarads parts per million Volts Volts (Direct Current) Unit of Measure Document 38-08008 Rev. *F Page 30 of 32 [+] Feedback SL811HS Document History Page Document Title: SL811HS Embedded USB Host/Slave Controller Document Number: 38-08008 Revision ** *A ECN 110850 112687 Submission Date 12/14/01 03/22/02 Orig. of Change BHA MUL Description of Change Converted to Cypress format from ScanLogic 1) Changed power supply voltage to 4.0 V in section 7.1 2) Changed value of twdsu in section 7.6.2 3) Changed max. power supply voltage to 3.45 V in section 7.2 4) Changed accuracy of adjustment in section 7.2 5) Changed bits 0 and 1 to reserved in section 5.3.8 6) Changed bit 2 to reserved in section 5.3.5 and 5.3.7 7) Changed bit 2 to reserved in section 5.3.1 8) Changed definition of bit 6 in section 5.3.5 & 5.3.7 9) Added section 5.1, Register Values on Power-up and Reset 10) Changed bit description notes in section 5.3.7 11) Changed note about series termination resistors in section 7.5 12) Changed example in section 5.3.9 13) Changed J-K Programming States table in section 5.3.2 14) Added and removed comments for low-power modes in section 5.3.4 15) Removed sections specific to slave operation and SL11H 16) Removed duplicate tables 17) General formatting changes to section headings 18) Fixed all part number references 19) Added comments to section 7.5 and new definitions to section 2.0 Went from single column to 2-column format. Combined information from SL811HS (38-08008) and SL811S/T (83-08009) Added lead free part numbers to new section Ordering Information and corrected references made to these parts. Corrected grammar. Added compliance statement in section USB Host Transceiver Characteristics. Implemented the new template. Changed Figure 4. Labels on pins 2 and 3 were swapped; this has been corrected. Combined the 48-pin TQFP AXC Pin Assignment and Definition table with the 28-pin PLCC Pin Assignment and Definition table. Removed all instances of SL811HST-AC. Corrected the variables. Removed references to the obsolete SL11H. Removed inactive parts from Ordering Information. Updated Packaging Information. Template and style updates. Added ordering code definitions, acroyms and units of measure. Updated table titles and references. Removed all references to 28-pin PLCC Package information as the package is no longer offered. Removed figure “Package Markings (28-pin PLCC)” on page 21 as it refers the PLCC package. Removed figure “48-Pin TQFP Mechanical Dimensions” as this is a duplicate of the Package diagram later in the spec on page 31. *B *C 381894 464641 See ECN See ECN VCS ARI *D 749518 See ECN ARI *E *F 2914091 3202147 04/15/2010 03/22/11 VRD ODC Document 38-08008 Rev. *F Page 31 of 32 [+] Feedback SL811HS Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. Products Automotive Clocks & Buffers Interface Lighting & Power Control Memory Optical & Image Sensing PSoC Touch Sensing USB Controllers Wireless/RF cypress.com/go/automotive cypress.com/go/clocks cypress.com/go/interface cypress.com/go/powerpsoc cypress.com/go/plc cypress.com/go/memory cypress.com/go/image cypress.com/go/psoc cypress.com/go/touch cypress.com/go/USB cypress.com/go/wireless PSoC Solutions psoc.cypress.com/solutions PSoC 1 | PSoC 3 | PSoC 5 © Cypress Semiconductor Corporation, 2001-2011. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. Document 38-08008 Rev. *F Revised March 25, 2011 Page 32 of 32 All products and company names mentioned in this document may be the trademarks of their respective holders. [+] Feedback