User`s guide

Appendix D • 59

SMBus Address Map

The SMBus address Map on cPCI-6820 products are as following.

Address (Hex) Function Device

0x A0 SO-DIMM ID

(1)

SO-DIMM

0x 5C Hardware Monitor ADM1026

0x AC SEL data storage (IPMI) 24C64

0x AE FRU data storage (IPMI) 24C64

0x AA BIOS CMOS storage 24C02

Note: ID of SO-DIMM 1~4 are selected by two GPIO pins from CSB5

SO-DIMM selection table:

GPIO13 GPIO12 DIMM

0 0 1

0 1 2

1 0 3

1 1 4