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Local I2C Buses
Local I2C Buses
Discovery I2C Bus
5 - 18
The board provides two local I2C buses, the Discovery and the SENTINEL
I2C bus.
The Discovery I2C bus provides access to board information memory
devices of the board itself and attached accessories like an RTB or PMC
modules.
Table 22: On-Board I2C Devices
Device
Board ID-ROM
IPMI ID-ROM
Table 23: Off-Board I2C Devices
Device
Type
PIB1
Depends on used PMC module
PIB2
Depends on used PMC module
RTB ID-
24C02
ROM
This I2C bus can be accessed via:
• IPMI controller and Master write/read command
• JTAG connector
• I2C interface integrated in system controller
Type
24LC128
24C02
Size in KByte
-
-
2
Buses
Size in KByte
128
2
Description
PMC 1 information
block
PMC 2 information
block
-
PPC/CPCI-690
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