ADLINK Express-CB - Manual (Page 15)

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5 Pinout, Signal and Switch Descriptions
5.1 COM Express ® Type 2 compatible pinout
All signals on AB and CD connectors of the Express-CB comply with pinouts and conventions
used in the original “PICMG
® COM.0 R1.0: COM Express ® Module Base Specification”.
95mm.
CD
AB
125mm.
CD Connector
Parallel ATA, IDE port
alternate definition assigns this to
2 additional Gigabit Ethernet ports
32-bit PCI v2.3 bus
alternate definition assigns this to
10 additional PCI Express x1
lanes
PCI Express x16 for Graphics
these pins can also be assigned
to two SDVO extensions
(multiplexed)
Power / Thermal control
+12V primary power input
5.2 Carrier Board Design Guide
The PICMG COM Express Carrier Design Guide is a
160-page document that provides information on
designing a custom carrier board for COM Express
modules. The design guide includes reference
schematics for the external circuitry required to
implement the various COM Express peripheral
functions, explains how to extend the supported buses,
and how to add additional peripherals and expansion
slots to a COM Express-based system. You can
download the document Carrier Design Guide at:
http://www.adlinktech.com/ccps/picmg_comdg_100.pdf
The above function mappings are a generic description of COM Express pinouts, and not
necessarily supported on the module described in this manual.
AB Connector
1 Gigabit Ethernet port
LPC interface
4 Serial ATA channels
High Definition Audio
8 USB 2.0 ports
5 PCI Express Lanes x1
Dual 24-bit LVDS channels
Analog VGA
8 GPIO pins
SMBus and I
2 C bus
+12V primary power input
+5V standby and 3V RTC