Справочник Пользователя для PC Concepts SHG2 DP

Management controllers (and sensors) communicate on the I

2

C-based IPMB. A bit protocol, 

defined by the I2C Bus Specification, and a byte-level protocol, defined by the Intelligent 
Platform Management Bus Communications Protocol Specification, provide an independent 
interconnect for all devices operating on this I

2

C bus.  

The IPMB extends throughout the server board and system chassis.  An added layer in the 
protocol supports transactions between multiple servers on inter-chassis I

2

C bus segments. 

SCSI HSBP-A 

5V 

0xC0 

 

SCSI HSBP-B 

5V 

0xC2 

 

Front Panel Connector 

5VSB 

0x9A 

 

IPMB Connector 

3VSB 

TBD 

Depends on plug-in card 

 

In addition to the “public” IPMB, the Sahalee BMC also has five private I

2

C buses that are used 

on the baseboard. The Sahalee BMC is the only master on the private buses.   The following 
tables list all server board connections to the Sahalee BMC private I

2

C buses. 

PCI Slot 1 

3VSB 

TBD 

Depends on plug-in card 

PCI Slot 2 

3VSB 

TBD 

Depends on plug-in card 

PCI Slot 3 

3VSB 

TBD 

Depends on plug-in card 

PCI Slot 4 

3VSB 

TBD 

Depends on plug-in card 

PCI Slot 5 

3VSB 

TBD 

Depends on plug-in card 

PCI Slot 6 

3VSB 

TBD 

Depends on plug-in card 

CMIC-LE  

2.5 V 

0xC0 

North Bridge 

CIOB-X2 

2.5 V 

0xC4 

I/O Bridge 

CSB5  

3.3 V 

0xC2 

South Bridge 

DIMM 1 

2.5 V 

0xA0 

DIMM1A 

DIMM 2 

2.5 V 

0xA2 

DIMM1B 

DIMM 3 

2.5 V 

0xA4 

DIMM2A 

DIMM 4 

2.5 V 

0xA6 

DIMM2B 

DIMM 5 

2.5 V 

0xA8 

DIMM3A 

DIMM 6 

2.5 V 

0xAA 

DIMM3B