General Information
COM Express® Carrier Board Design Guide
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Chapter 1
General Information
This design guide provides suggestions on designing IBASE COM-Express products
including carrier boards and systems. For other carrier board schematic guidelines
please refer to the full specification in the PICMG® COM Express® Carrier Board
Design Guide.
This design guide is not a specification and should not be your sole reference. The
guide is intended for electronics engineers and PCB layout engineers involved in the
design of the COM Express Modules Carrier Boards. The schematic examples in
this document are believed to be correct, however, no guarantee is given. The
examples shown here have been taken from the designs that were already tested.
For any questions that you may have in the design of carrier boards, please contact
IBASE sales representatives or engineers in your area.
1.1 ABOUT COM EXPRESS
COM Express is a highly integrated computer module that is integrated with the
CPU, memory and I/O functions including USB, audio, graphics and Ethernet, which
signals are mapped to two high-density, low-profile connectors at the bottom of the
module.
COM Express uses a mezzanine concept, with a module inserted onto customized
base boards. The module and base boards can be both upgraded to newer versions
and to earlier-designed compatible versions. Common applications for COM Express
modules are in various applications in the field of IoT, industrial automation, military,
gaming, medical and transportation.
Summary of Contents for ET976
Page 1: ...COM EXPRESS CARRIER BOARD DESIGN GUIDE Version 1 0 January 2022...
Page 11: ...COM Express Carrier Board Design Guide 5 Figure 3 PCI Express x4 Slot Example...
Page 12: ...6 COM Express Carrier Board Design Guide Figure 4 PCIe Mini Card Reference Circuitry...
Page 19: ...COM Express Carrier Board Design Guide 13 Figure 7 HDMI Example 1...
Page 20: ...14 COM Express Carrier Board Design Guide Figure 7 HDMI Example 2...
Page 21: ...COM Express Carrier Board Design Guide 15 Figure 8 DVI Example 1...
Page 22: ...16 COM Express Carrier Board Design Guide Figure 8 DVI Example 2...
Page 31: ...COM Express Carrier Board Design Guide 25 Figure 12 USB 3 0 Example 2...
Page 37: ...COM Express Carrier Board Design Guide 31 Figure 14 LVDS Reference Schematic 2...
Page 44: ...38 COM Express Carrier Board Design Guide Figure 16 VGA Reference Schematics 2...
Page 48: ...42 COM Express Carrier Board Design Guide Figure 18 HDA Example Schematic 2...
Page 52: ...46 COM Express Carrier Board Design Guide Figure 19 LPC Super I O Example 2...
Page 61: ...COM Express Carrier Board Design Guide 55 Figure 24 General Purpose Serial Port Example 2...
Page 70: ...64 COM Express Carrier Board Design Guide Figure 28 PWRBTN and SYS_RESET Circuitry...
Page 84: ...78 COM Express Carrier Board Design Guide Chapter 4 Carrier Board PCB Layout Guidelines...
