VersaLogic SPX-5 Reference Manual

Eight-channel solid state switch serial peripheral expansion (spx) board

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Reference
Manual
DOC. REV. 4/9/2013
SPX-5
Eight-channel Solid State
Switch Serial Peripheral
Expansion (SPX™) Board

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Summary of Contents for VersaLogic SPX-5

  • Page 1 Reference Manual DOC. REV. 4/9/2013 SPX-5 Eight-channel Solid State Switch 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 Product Release Notes Rev. 1  Production release. Support Page The SPX support page, at http://www.versalogic.com/private/SPX5support.asp, contains additional information and resources for this product including:  Reference Manual (PDF format)  Data sheets and manufacturers’ links for chips used in this product ...
  • Page 4: Table Of Contents

    Electrostatic Discharge ..................3 Technical Support ....................... 4 Repair Service ......................4 Physical Details ......................5 SPX-5 Board Layout ......................5 Hardware Assembly ....................6 Connector Functions and Interface Cables ................. 7 Jumper Summary ........................ 7 Connector Pinouts ....................... 8 Operation ........................
  • Page 5: Introduction

    Introduction Description The VersaLogic SPX-5 is an 8-channel FET switch expansion module designed to be used with EBX-11 Rev 6.xx SPX™ enabled base boards. Its features include:   Freescale MC33879 Octal Serial Switch 24VDC Working Voltage   8 High-side/Low-side FET Switches 2 Inputs Configurable for PWM 0.6A –...
  • Page 6: Technical Specifications

    Single channel: 550mA continuous. Compatibility: SPX – EBX-11 Rev 6 and above compatible SPI controller (3.3V signaling SPI interface, 4 MHz maximum clock, manual Slave Select) Weight: Compliance: RoHS – Full compliance Specifications are subject to change without notice. SPX-5 Reference Manual...
  • 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 (503) 747-2261. VersaLogic technical support engineers are also available via e-mail at Support@VersaLogic.com.
  • Page 9: Physical Details

    Physical Details SPX-5 Board Layout The figure below shows the dimensions of the SPX-5 board, as well as the location of connectors, jumpers, and mounting holes. 3.775” 3.375” 1.2” 0.8” 0.55” 0.125” DIA x4 SPX to Base Use 3mm or #4...
  • Page 10: Hardware Assembly

    Physical Details ARDWARE SSEMBLY The SPX-5 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, shown in Figure 2. Standoffs and screws are available as part number VL-HDW-101.
  • Page 11: Connector Functions And Interface Cables

    Switch 5 Input Select. [2-4] = PWM input [4-6] = SPI input * Note the orientation of the V2 jumpers. Pins 2-4-6 control switch 5 input, and pins 1-3-5 control switch 6 input. Switch 5 Input Switch 6 Input SPX-5 Reference Manual...
  • Page 12: Connector Pinouts

    PWM input 1. PWM_IN2 PWM input 2. Not connected. Not connected. Ground. Switch 5 drain. Switch 5 source. Switch 6 drain. Switch 6 source. Ground. Switch 7 drain. Switch 7 source. Switch 8 drain. Switch 8 source. Ground. SPX-5 Reference Manual...
  • Page 13: Operation

    It is controlled through the VersaLogic SPX (SPI) interface, but has two channels that can be configured via jumpers to accept direct control signals such as PWM, GPIO, or pushbutton inputs.
  • Page 14: Applications

    Operation PPLICATIONS Figure 3 provides a simplified view of possible applications. +3.3V +13.6V VPWR MOSI High-Side Drive SCLK SCLK SSx# MISO H-Bridge Configuration PWM1 PWM2 Low-Side Drive Freescale MC33879 Figure 3. Simplified Application Diagram SPX-5 Reference Manual...
  • Page 15: Switch Control Code Example

    The following code example shows how to configure the base board’s SPX registers for the SPX- 5 and turns on switch 3 (SPX-5 J3 pins 1 and 2). The test setup is configured with an appropriate external voltage supply for the load driven and the SPX-5 jumpered for SS0#.
  • Page 16: 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 appropriate base-board reference manual for details and updates.
  • Page 17 SPI Busy Flag – This bit is a status flag that indicates when an SPI BUSY transaction is underway. 0 = SPI bus idle 1 = SCLK is clocking data in and out of the SPIDATA registers This bit is read-only. SPX-5 Reference Manual...
  • Page 18: Spi Data Registers

    SPIDATA3 is sent first, and received data will be shifted into the LSbit of the selected frame size set in the SPILEN field. When LSBIT_1ST = 1, the LSbit of the selected frame size is sent first, and the received data will be shifted into the MSbit of SPIDATA3. SPX-5 Reference Manual...

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