Related Manuals for VersaLogic SPX-2
Summary of Contents for VersaLogic SPX-2
- Page 1 Reference Manual DOC. REV. 4/7/2008 SPX-2 Sixteen-line Digital I/O Serial Peripheral Expansion (SPX™) Board...
- Page 2 All Rights Reserved Notice: Although every effort has been made to ensure this document is error-free, VersaLogic makes no representations or warranties with respect to this product and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
- Page 3 Data sheets and manufacturers’ links for chips used in this product Utility routines and benchmark software This is a private page for SPX-2 users that can be accessed only be entering this address directly. It cannot be reached from the VersaLogic homepage.
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Page 4: Table Of Contents
Warnings..........................3 Electrostatic Discharge ..................3 Technical Support ....................... 4 Repair Service......................4 Physical Details ....................... 5 SPX-2 Board Layout......................5 Hardware Assembly....................6 Connector Functions and Interface Cables ................. 7 Jumper Summary ........................ 7 J1 Connector Pinout......................7 Digital I/O ......................... 8 Description.......................... -
Page 5: Introduction
Introduction Description The VersaLogic SPX-2 is a 16-channel digital I/O expansion module designed to be used with any SPX™ enabled base board. Its features include: Microchip MCP23S17 16-bit I/O Expander Compatible with any SPX enabled base board VersaLogic SPX boards are a line of I/O expansion boards using the industry standard Serial Peripheral Interface (SPI) bus. -
Page 6: Technical Specifications
Introduction Technical Specifications Specifications are typical at 25°C with 5.0V supply unless otherwise noted. Board Size: 1.2" x 3.775", SPX compliant Storage Temperature: -40° C to 85° C Free Air Operating Temperature: -40° C to +85° C Power Requirements: +5.0V ± 5% @ 9.0 mA (45 mW) typ., 155 mA (773 mW) max. -
Page 7: Rohs-Compliance
(PBDE) flame retardants, in certain electrical and electronic products sold in the European Union (EU) beginning July 1, 2006. VersaLogic Corporation is committed to supporting customers with high-quality products and services meeting the European Union’s RoHS directive. -
Page 8: Technical Support
If you are unable to solve a problem with this manual please visit the SPX Product Support web page listed below. If you have further questions, contact VersaLogic technical support at (541) 485-8575. VersaLogic technical support engineers are also available via e-mail at Support@VersaLogic.com. -
Page 9: Physical Details
Physical Details SPX-2 Board Layout The figure below shows the dimensions of the SPX-2 board, as well as the location of connectors, jumpers, and mounting holes. 3.775” 3.375” Slave Select 1.2” SPX to Base Board 0.39” Figure 1. SPX-2 Board Layout (Not to scale. -
Page 10: Hardware Assembly
Physical Details ARDWARE SSEMBLY The SPX-2 mounts on two hardware standoffs using the corner mounting holes. These standoffs are secured to the board, typically across the PC/104 and PC/104-Plus stack locations, using pan head screws. Standoffs and screws are available as part number VL-HDW-101. -
Page 11: Connector Functions And Interface Cables
Physical Details Connector Functions and Interface Cables The following table shows the function of each connector, as well as mating connectors and cables. Table 1: Connector Functions and Interface Cables Mating Transition Cable Connector Function Connector Cable Description SPX to Base FCI 89361-714LF or CBR-1401 2 SPX Module Cable... -
Page 12: Digital I/O
Input data can be inverted through register settings. Any I/O pin(s) can generate an interrupt on change of state. As outputs, the I/O pins drive at 3.3 volt CMOS levels. The SPX-2 I/O inputs are not 5 volt tolerant. Inputs have external 10k pull-ups to 3.3 volts. -
Page 13: Digital I/O Port Configuration
RITING TO A IGITAL The SPX-2 can take advantage of the EBX-11 Rev 6 and above as well as the EBX-22 Rev 3 and above data streaming capability. See the MCP23S17 datasheet for information on Sequential Mode. The following code example initiates a write of 55h to SPX-2 I/O port bits GPA7-GPA0 using the standard 24-bit SPI frame with auto slave select. - Page 14 Digital I/O AL, 00h ;SPIDATA2: MCP23S17 register address 00h DX, AL DX, 1DDh AL, 40h ;SPIDATA3: MCP23S17 write command DX, AL CALL BUSY ;Poll busy flag to wait for SPI transaction ;Write 55h to MCP23S17 register GPIOA DX, 1DBh AL, 55h ;SPIDATA1: data to write DX, AL DX, 1DCh...
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Page 15: Base Board Spi Registers
The following tables describe the SPI control and data registers of the EBX-11 Rev. 6.00 and later. This is the standard set of SPI registers for VersaLogic CPU boards with an SPX interface. See the reference manual for details and updates. - Page 16 Base Board SPI Registers SPISTATUS (READ/WRITE) 1D9h IRQSEL1 IRQSEL0 SPICLK1 SPICLK0 HW_IRQ_EN LSBIT_1ST HW_INT BUSY Table 6: SPI Control Register 2 Bit assignments Mnemonic Description D7-D6 IRQSEL IRQ Select – These bits select which IRQ will be asserted when a hardware interrupt from a connected SPI device occurs.
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Page 17: Spi Data Registers
Base Board SPI Registers SPI D EGISTERS SPIDATA0 (READ/WRITE) 1DAh MSbit LSbit SPIDATA1 (READ/WRITE) 1DBh MSbit LSbit SPIDATA2 (READ/WRITE) 1DCh MSbit LSbit SPIDATA3 (READ/WRITE) 1DDh MSbit LSbit SPIDATA3 contains the most significant byte (MSB) of the SPI data word. A write to this register will initiate the SPI clock and, if the MAN_SS bit = 0, will also assert a slave select to begin an SPI bus transaction.
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