COM-HPC-ALT User's Guide
Table
Contents
of
Revision History ................................................................................................................................................................................................................................................................................................................ 2
Preface .................................................................................................................................................................................................................................................................................................................................. 3
1. Introduction ................................................................................................................................................................................................................................................................................................................. 3
2. Specifications ............................................................................................................................................................................................................................................................................................................... 4
2.1
Core System ..................................................................................................................................................................................................................................................................................................................................... 4
2.2
Expansion Busses ........................................................................................................................................................................................................................................................................................................................... 5
2.3
Ethernet ............................................................................................................................................................................................................................................................................................................................................. 8
2.4
Multi I/O and Storage .................................................................................................................................................................................................................................................................................................................. 9
2.5
Others ............................................................................................................................................................................................................................................................................................................................................... 10
2.6
Security ............................................................................................................................................................................................................................................................................................................................................ 10
2.7
Module Management Controller (MMC) ............................................................................................................................................................................................................................................................................ 11
2.8
Debug............................................................................................................................................................................................................................................................................................................................................... 17
2.9
Power ................................................................................................................................................................................................................................................................................................................................................ 17
2.10 Mechanical and Environmental............................................................................................................................................................................................................................................................................................... 18
3. Block Diagram ........................................................................................................................................................................................................................................................................................................... 20
4. Pinout and Signal Descriptions .......................................................................................................................................................................................................................................................................... 21
4.1
Pin Summary .................................................................................................................................................................................................................................................................................................................................. 21
4.2
Signal Terminology Descriptions ............................................................................................................................................................................................................................................................................................. 7
4.3
Signal Descriptions on J1/J2 Connectors .............................................................................................................................................................................................................................................................................. 8
4.3.1
Ethernet KR/KX ................................................................................................................................................................................................................................................................................................................... 8
4.3.2
NBASE-T Ethernet .............................................................................................................................................................................................................................................................................................................. 9
4.3.3
PCI Express ......................................................................................................................................................................................................................................................................................................................... 11
4.3.4
USB ........................................................................................................................................................................................................................................................................................................................................ 18
4.3.5
Asynchronous Serial Port .............................................................................................................................................................................................................................................................................................. 20
4.3.6
I2C ......................................................................................................................................................................................................................................................................................................................................... 21
4.3.7
Port 80 Support on USB_PD I2C Bus ........................................................................................................................................................................................................................................................................ 22
4.3.8
IPMB ..................................................................................................................................................................................................................................................................................................................................... 22
4.3.9
General Purpose SPI ....................................................................................................................................................................................................................................................................................................... 23
4.3.10
Power & System Management ................................................................................................................................................................................................................................................................................... 24
4.3.11
Thermal Protection .......................................................................................................................................................................................................................................................................................................... 25
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PICMG COM-HPC R1.0
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