Sm Bus Connector (J9E4); Icmb Connector (J1D2); Table A-28 Sm Bus Connector (J9E4) - Silicon Graphics 1450 Maintenance Manual

SM Bus Connector (J9E4)

ICMB Connector (J1D2)

007-4276-001
Table A-27 (continued)
Pin Signal
18 Reserved
19 Reserved
20 GROUND
21 Reserved
22 Reserved
23 Reserved
24 Reserved
25 Key
26 Reserved
This connector allows connection to the Memory Module I2C bus on which the DIMMs
EEPROMs reside. A shorted I2C connection at the SM Bus I2C connector will prevent the
system BIOS from sizing and configuring main memory. Table A-28 shows the cable
pinout assignments for the SM bus connector.
Table A-28 SM Bus Connector (J9E4)
Pin Signal Description
1 Local I2C SDA OSB4 SM bus data line
2 GROUND
3 Local I2C SCL OSB4 SM bus data line
The external Intelligent Chassis Management Bus (ICMB) provides external access to
ICMB devices that are within the chassis. For example, you can externally access chassis
management functions, alert logs, and post-mortem data. The ICMB connector also
Server Monitor Module Connector Pinout
Type Description-Implementation
Reserved pin: NC on baseboard
Reserved pin: NC on baseboard
Ground Ground
Reserved pin: NC on baseboard
Reserved pin: NC on baseboard
Reserved pin: NC on baseboard
Reserved pin: NC on baseboard
No connect on baseboard
Reserved pin: NC on baseboard
Baseboard Connectors
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