
Page 4 Express-CVC
Table of Contents
Revision History ............................................................................................................ 2
Preface............................................................................................................................ 3
1. Introduction......................................................................................................... 7
2. Specifications....................................................................................................... 8
2.1. Core System...............................................................................................................................8
2.2. Expansion busses.......................................................................................................................8
2.3. Video .........................................................................................................................................8
2.4. Audio .........................................................................................................................................9
2.5. Ethernet.....................................................................................................................................9
2.6. Multi I/O and Storage................................................................................................................9
2.7. Super I/O (on Carrier using LPC -bus)........................................................................................9
2.8. GPIO...........................................................................................................................................9
2.9. SEMA Board Controller .............................................................................................................9
2.10. TPM (Trusted Platform Module) ............................................................................................ 10
2.11. Fan Control............................................................................................................................. 10
2.12. Power Specifications .............................................................................................................. 10
2.13. Mechanical and Environmental ............................................................................................. 10
2.14. Specification Compliance ....................................................................................................... 10
2.15. Functional Diagram ................................................................................................................ 11
2.16. Mechanical Drawing............................................................................................................... 12
3. COM Express Pinouts and Signal Descriptions ..............................................
13
3.1. AB/CD Pin Definitions............................................................................................................. 13
3.2. Signal Description Terminology.............................................................................................. 16
3.3. AB Signal Descriptions............................................................................................................ 17
3.3.1. Audio Signals .....................................................................................................................................17
3.3.2. Analog VGA........................................................................................................................................17
3.3.3. LVDS...................................................................................................................................................18
3.3.4. Gigabit Ethernet ................................................................................................................................18
3.3.5. Serial ATA ..........................................................................................................................................19
3.3.6. PCI Express.........................................................................................................................................20
3.3.7. Express Card ......................................................................................................................................20
3.3.8. LPC bus ..............................................................................................................................................21
3.3.9. USB ....................................................................................................................................................21
3.3.10. SPI (BIOS only) .................................................................................................................................22
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