OCPRF100 MP Server System Technical Product Specification

Revision 1.0

OCPRF100FPC Private I2C Bus Diagram

FPC MPU

I2C

80651

I2C

I2C

I2C

Temp Monitor DS1621*

I2C Address: 90h / 91h

EEPROM (FRU) AT24C02*

I2C Address: A0h / A1h

Front Panel Board

I/O Expender PCF8574*

 

EEPROM (FRU) AT24C02

I2C Address: 40h /41h

 

I2C Address: A2h / A3h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O Expender PCF8574

I2C Address: 42h / 43h

Midplane Board

EEPROM (FRU) AT24C02

I2C Address: AAh / ABh

Inside

Power Supply 1

I2C

 

 

EEPROM (FRU) AT24C02

 

 

 

 

I2C Address: ACh / ADh

I2C

Inside

Power Supply 2

EEPROM (FRU) AT24C02

I2C Address: AEh / AFh

Inside

Power Supply 3

Figure 10-2: Devices Not Supporting Multimaster Mode10.2.12.2 Global I2C Bus

The global I2C bus is connected automatically to the IPMB whenever power is valid. This bus is used to allow communication between smart I2C devices that operate in multimaster mode. Spe-

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