PMC-HPDI32A High-speed Parallel Digital I/O PMC Board 100 to 200 Mbytes/s Cable I/O with PCI-DMA engine Features Include: · 100 Mbytes per second (max) input transfer rate via the front panel connector (RS422/485 differential I/O transceivers) · 200 Mbytes per second input transfer rate via the front panel connector (Pseudo ECL I/O transceivers) · 132 Mbytes per second PMC transfer rate in burst mode. · A single board can interface to a wide variety of external high-speed devices. · "Deep FIFO buffers" (up to 512 Kbytes) allow data bursts to be transferred over the PMC bus independent of transfers over the cable. · 32-Bit data transfers on the PMC bus. · On-board cable controller, FIFOs, and DMA engine provide for continuous data transfer capability. · Data input/output clock rate up to 25 MHz · Data input/output width of 32 bits · "Program-and-forget" DMA engine handles D32 transfers, also DMA Chaining · Interrupts available upon DMA-completion, FIFO status, cable status, frame-valid and line-valid. · External interrupt input line · 7 bi-directional signals can be user defined and programmed by the factory to accommodate almost any handshaking protocol (Contact factory). Applications Include: ü High speed data acquisition and control ü Point-to-Point PMC-to-PMC bus communication ü High-speed video data capture ü General Purpose Parallel DMA interface ü Development and research ü Trainers and simulators Overview: The PMC-HPDI32A board is a very high speed parallel digital input/output board. It provides for data I/O via the cable at 100 Mbytes per second (RS422/485 differential I/O) or 200 Mbytes per second (Pseudo ECL Differential I/O) and can transfer data indefinitely without host intervention. The board employs General Standards’ high performance PCI-DMA (PLX) engine. The PCI-DMA is easily set up and operated by writing only a few programming instruction statements to the board. Once the link between the PMC-HPDI32A board and the external customer device is established, the desired data transfers between the two devices are performed and are transparent to the user. The board employs differential (RS-422/485) or Pseudo ECL transceivers and the data path is 32 bits wide. The board will interface to a wide variety of digital I/O devices. Functional Description: The PMC-HPDI32A board includes the PCI-DMA engine, FIFO memory, a 32-Bit cable input/output controller, and cable receivers (Differential Pseudo ECL or RS-422/485). The DMA engine is capable of transferring data to host memory using D32 block transfers; while the FIFO memory provides continuous transmission of data without interrupting the DMA transfers or requiring intervention from the Host CPU. After the DMA is initialized and started, the Host CPU will be free to proceed with other duties and will need to only respond to interrupts. The board also includes interrupt generation for interface flexibility and end-of-transfer indication. Interrupts are also available to indicate FIFO status (Transmit and Receive FIFO almost-empty and almost-full), cable status, and frame and line valid for easy manipulation of the cable interface. The PMC-HPDI32A also offers 7 Bi-directional signals that can be customized to accommodate almost any handshaking protocol. General Standards routinely modifies the cable protocol to meet the customer’s exact interface protocol. Please contact the factory for custom modifications. Cable Interface: The cable interface provides for very high-speed reception of data (up to 100 Mbytes/sec). The cable interface provides for a data interface width of 32 bits. The data receivers are differential (RS- 422/485). An optional Pseudo-ECL interface allows for transfers at up to 200 Mbytes/sec. Clock Frame Valid Line Valid Status Valid Data Invalid <2ns <8ns <8ns TX <16ns fmax=25MHz 100 Mbytes/sec >19n >19n RX >2ns fmax=25MHz 100Mbytes/sec Note: Data is transmitted on the rising edge of the Transmit clock and received on the negative edge of the receive clock. High Performance Architecture: The board is designed for the highest performance level using conventional (and moderately priced) components. The PCI-DMA engine is designed to require minimal intervention from the host; it provides for high-speed transfers between the FIFO and PCI memory using DMA instructions stored in RAM. Data is transferred from the cable to the FIFO using a high-speed dedicated I/O controller. SPECIFICATIONS DMA Transfer Rates · Transfer Rate over cable (RS-422/485 Transceivers): 100 Mbytes/sec at 25 MHz clock rate and 32-bit cable interface. · Transfer Rate over cable (Differential Pseudo ECL Transceivers): 200 Mbytes/sec (max) · PCI transfer rate from on-board FIFO to PCI: 132 Mbytes/sec max (100 Mbytes/sec typ) · Data transfers over the cable do not interrupt data transfers over PCI since data is decoupled using FIFO buffering. DMA Start Latency (when started by cable input or by CPU) Initialization and DMA start: less than 1 microsecond typical FIFO Memory The FIFOs on the PMC-HPDI32 are used for buffering the transmit or receive data. There is a total of eight FIFOs on the board; 1 set of 4 for transmit, and 1 set of 4 for receive. Each set consists of 32 bits of data and 4 status flags. The receive FIFOs are loaded by the cable receive control logic and read by either the CPU or the DMA. The transmit FIFOs are loaded by either the CPU or the DMA and read by the cable transmit control logic. The 4 status flags that accompany the FIFOs are all active low (‘0’ being TRUE) and are as follows: Empty, Almost Empty, Almost Full, Full. The Almost Empty and the Almost Full status flags can be programmed by the software to become true at most desired levels. Cable Interface Transceivers RS-422/485 levels (contact factory for availability of TTL levels) RS-422/485 transceivers provide +- 7.5 Volts of noise immunity and can withstand +- 25 Volt transients without damage. On-board parallel termination (150 ohms) provides the usual transmission line termination. In either case unused inputs can be left open; however, the logic level of unconnected inputs is indeterminate. Pseudo ECL levels (option) is realized using Lucent BTM1A16NB differential pseudo ECL to/from TTL transceivers. The transceiver has a high output driver for up to 50 ohm loads. The driver outputs are terminated internally at 220 ohms and the inputs are terminated at 110 ohms eliminating the need for external resistors. For more information refer to www.lucent.com and search on the above part number. PCI INTERFACE q Compatibility: Conforms to PCI Specification 2.1, with D32 read/write transactions. Supports "plug-n-play" initialization. Single multifunction interrupt. Supports DMA transfers as bus master. MECHANICAL AND ENVIRONMENTAL SPECIFICATIONS q Power Requirements 6.2 – 6.8 watts typical at +5.0 VDC ±0.20 VDC q Physical Characteristics Height: 7.0 mm Depth: 149.0 mm Width: 74.0 mm q Environmental Specifications Ambient Temperature Range: Operating: 0 to +55 degrees Celsius Storage: -40 to +85 degrees Celsius Relative Humidity: Operating: 0 to 80%, non-condensing Storage: 0 to 95%, non-condensing Altitude: Operation to 10,000 ft. q Cooling Requirements 200 LFPM minimum air flow across component side of board; ORDERING INFORMATION Specify the basic product model number (PMC-HPDI32A-XXXK), where "X" is an option code as indicated below. For example, model number PMC-HPDI32A-256K describes a board with a total of 256Kbytes of FIFO buffering. Other Examples Follow: PMC-HPDI32A-64K with 8K x 32-bit FIFOs on each channel (both Tx & Rx, 64K byte total); PMC-HPDI32A-256K with 32K x 32-bit FIFOs on each channel (both Tx & Rx, 256K byte total); PMC-HPDI32A-512K with 64K x 32-bit FIFOs on each channel (both Tx & Rx, 512K byte total); PMC-HPDI32A-1M with 128K x 32-bit FIFOs on each channel (both Tx & Rx, 1M byte total); Differential ECL cable transceiver version: PMC-HPDI32A-64K-ECL with 8Kx32-bit FIFOs on each channel, (both Tx & Rx,64K bytes total); PMC-HPDI32A-256K-ECL with 32Kx32-bit FIFOs on each channel, (both Tx & Rx,256K byte total); PMC-HPDI32A-512K-ECL with 64Kx32-bit FIFOs on each channel, (both Tx & Rx,512K byte total); PMC-HPDI32A-1M-ECL with 128Kx32-bit FIFOs on each channel (both Tx & Rx, 1M byte total); SYSTEM I/O CONNECTIONS System Connector Pin Functions Pin No. Cable Signal Name Pin No. Cable Signal Name 1 CABLE CLK + 41 CABLE D12 + 2 CABLE CLK - 42 CABLE D12 - 3 CABLE COMMAND D0 + 43 CABLE D13 + 4 CABLE COMMAND D0 - 44 CABLE D13 - 5 CABLE COMMAND D1 + 45 CABLE D14 + 6 CABLE COMMAND D1 - 46 CABLE D14 - 7 CABLE COMMAND D2 + 47 CABLE D15 + 8 CABLE COMMAND D2 - 48 CABLE D15 - 9 CABLE COMMAND D3 + 49 CABLE D16 + 10 CABLE COMMAND D3 - 50 CABLE D16 - 11 CABLE COMMAND D4 + 51 CABLE D17 + 12 CABLE COMMAND D4 - 52 CABLE D17 - 13 CABLE COMMAND D5 + 53 CABLE D18 + 14 CABLE COMMAND D5 - 54 CABLE D18 - 15 CABLE COMMAND D6 + 55 CABLE D19 + 16 CABLE COMMAND D6 - 56 CABLE D19 - 17 CABLE D0 + 57 CABLE D20 + 18 CABLE D0 - 58 CABLE D20 - 19 CABLE D1 + 59 CABLE D21 + 20 CABLE D1 - 60 CABLE D21 - 21 CABLE D2 + 61 CABLE D22 + 22 CABLE D2 - 62 CABLE D22 + 23 CABLE D3 + 63 CABLE D23+ System Mating Connector: 24 CABLE D3 - 64 CABLE D23 - Robinson Nugent # P50E-080-S-TG 25 CABLE D4 + 65 CABLE D24 + 26 CABLE D4 - 66 CABLE D24 - 27 CABLE D5 + 67 CABLE D25 + 28 CABLE D5 - 68 CABLE D25 - 29 CABLE D6 + 69 CABLE D26 + 30 CABLE D6 - 70 CABLE D26 - 31 CABLE D7 + 71 CABLE D27 + 32 CABLE D7 - 72 CABLE D27 - 33 CABLE D8 + 73 CABLE D28 + 34 CABLE D8 - 74 CABLE D28 - 35 CABLE D9 + 75 CABLE D29 + 36 CABLE D9 - 76 CABLE D29 - 37 CABLE D10 + 77 CABLE D30 + 38 CABLE D10 - 78 CABLE D30 - 39 CABLE D11 + 79 CABLE D31 + 40 CABLE D11 - 80 CABLE D32 - General Standards Corporation assumes no responsibility for the use of any circuits in this product. No circuit patent licenses are implied. Information included herein supersedes previously published specifications on this product and is subject to change without notice.