Hardware Assembly; Stack Arrangement Example - VersaLogic Ocelot Reference Manual

Intel atom-based sbc with ethernet, video, sumit, and pc/104 interface

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Distributor of VersaLogic Corporation: Excellent Integrated System Limited

Datasheet of VL-CBR-2012 - 20" 24-BIT LVDS CABLE

ARDWARE

SSEMBLY

The VL-EPMs-21 uses pass-through SUMIT (PCIe, USB, LPC, and SPI) and PC/104 (ISA)

connectors so that expansion modules can be added to the top of the stack. A SUMIT expansion

module with a PCIe x4 lane must be closest to the CPU board (for SUMIT CPU boards

supporting a PCIe x4 lane). Next on the stack would be an expansion module with a PCIe x1

lane. Above that, USB, SPI, SMBus, and/or LPC SUMIT modules can be stacked. PC/104-only

(ISA) modules must not be positioned between the VL-EPMs-21 and any SUMIT modules on the

stack.

The entire assembly can sit on a table top or be secured to a base plate. When bolting the unit

down, make sure to secure all four standoffs to the mounting surface to prevent circuit board

flexing. Standoffs are secured to the top circuit board using four pan head screws. See page 11 for

dimensional details. Standoffs and screws are available as part number VL-HDW-105. Note that

the standoffs in this kit are 15.25 mm (0.60"), and must not be mixed with the 15 mm standoffs

used for non-SUMIT boards.

An extractor tool is available (part number VL-HDW-201) to separate the PC/104 modules from

the stack. Use caution when using the extractor tool not to damage any board components.

TACK

RRANGEMENT

VL-EPMs-21 Reference Manual

XAMPLE

Figure 6. Stack Arrangement Example

Physical Details

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Vl-epms-21