cExpress-AR User’s Guide
PICMG COM.0 R3.0
Page 8
Copyright © 2021 ADLINK Technology, Inc.
Miscellaneous....................................................................................................................................................................................................................................................................................................................37
SMBus ..................................................................................................................................................................................................................................................................................................................................38
I2C bus.................................................................................................................................................................................................................................................................................................................................38
General Purpose I/O (GPIO).........................................................................................................................................................................................................................................................................................39
Serial Interface Signals...................................................................................................................................................................................................................................................................................................39
Power and System Management...............................................................................................................................................................................................................................................................................40
Power and Ground ..........................................................................................................................................................................................................................................................................................................41
CD Connector Signal Descriptions.........................................................................................................................................................................................................................................................................................42
USB 3.0 Extensions ..........................................................................................................................................................................................................................................................................................................42
PCI Express .........................................................................................................................................................................................................................................................................................................................43
DDI1 Port ............................................................................................................................................................................................................................................................................................................................45
DDI2 Port ............................................................................................................................................................................................................................................................................................................................48
DDI3 Port ............................................................................................................................................................................................................................................................................................................................51
PCIe Graphics Port (PEG)...............................................................................................................................................................................................................................................................................................54
Module Type Definition.................................................................................................................................................................................................................................................................................................56
Power and Ground ..........................................................................................................................................................................................................................................................................................................57
Additional Features .................................................................................................................................................................................................................................................................................................58
Debug Connector ........................................................................................................................................................................................................................................................................................................................59
Status LEDs.....................................................................................................................................................................................................................................................................................................................................60
Exception Codes...........................................................................................................................................................................................................................................................................................................................61
Fan Connector...............................................................................................................................................................................................................................................................................................................................62
BIOS Default Reset Button........................................................................................................................................................................................................................................................................................................63
BIOS Boot Select...........................................................................................................................................................................................................................................................................................................................64
BIOS Checkpoints, Beep Codes..........................................................................................................................................................................................................................................................................65
Software Support.....................................................................................................................................................................................................................................................................................................66
Operating Systems ......................................................................................................................................................................................................................................................................................................................66
Mechanical and Thermal.......................................................................................................................................................................................................................................................................................67
Module Dimensions....................................................................................................................................................................................................................................................................................................................67
Thermal Solutions........................................................................................................................................................................................................................................................................................................................68
Heatspreader: HTS...........................................................................................................................................................................................................................................................................................................68
Heatsink: THS ....................................................................................................................................................................................................................................................................................................................69
Heatsink High Profile: THSH ........................................................................................................................................................................................................................................................................................70
Heatsink with Fan: THSF................................................................................................................................................................................................................................................................................................71
