PC Concepts SHG2 DP - Manual (Page 72)

Connections Intel® SHG2 DP Server Board Technical Product Specification
Intel Order Number C11343-001 Revision 1.0 60
8.8 System Management Interfaces
8.8.1 ICMB Connector
CN21 [Key-N]
The external Intelligent Chassis Management Bus (ICMB) provides external access to IMB
devices that are within the chassis. This makes it possible to externally access chassis
management functions, alert logs, post-mortem data, etc. It also provides a mechanism for
chassis power control. As an option, the server can be configured with an ICMB adapter board
to provide two RJ45 8-pin connectors to allow daisy-chained cabling. Additional information
about the ICMB can be found in the External Intelligent Management Bus Bridge External
Program Specification.
Table 43. ICMB Connector Pin-out
ICMB [Key-N]
Pin Name
1 XP05S
2 ICMB_TX
3 ICMB_TX_ENB
4 ICMB_RX
5 GND
8.8.2 Auxiliary I 2 C* Connector
IPMB CN44 [Key-D]
The baseboard provides a 3-pin auxiliary I
2
C connector for OEM access to the IPMB. This
connector is not isolated when power is off. Any devices connected must remain powered in
this state or the BMC will not work properly.
Caution: A shorted I
2
C connection at the auxiliary I
2
C connector will prevent restoration of main
power because the BMC needs the bus to boot the server from standby power.
Table 44. IPMB Connector Pinout
CN44 [Key-D]
Pin Name
1 IPMB_DATA+00
2 GND
3 IPMB_CLK+00