Emerson ATCA-F120 Installation And Use Manual page 95

The IPMC is fully compliant to the IPMI V1.5 standard and provides the following interfaces:
IPMB0A and IPMB0B available via the backplane
IPMB-L connected to rear transition module and the two AMC bays on-board
I2C interface connected to on-board PMC slot and sensors
Analog-to-Digital Conversion (ADC) interfaces connected to on-board sensors
Digital I/O interfaces connected to on-board sensors
Watchdog
One of the main tasks of the IPMC is to control the power up and power down of the blade. For
this purpose the IPMC is connected to the on-board power supply module via control and
status lines. Various on-board IPMI sensors provide detailed information on the current power
status of the blade to any interested party connected to the IPMI network.
The following figure gives an overview of the IPMI structure used on-board.
Figure 4-6
Blade
AMC Bay B1
Power Supply
Module
ATCA-F120 Installation and Use (6806800D06F)
IPMI Structure
Host
IDROM
I2C
Sensors
Control and
Status Signals
Functional Description
FPGA
IPMC
I2C
IMC
Dig. I/O
Atmega256
ADC
SPI ISC0
ADC
Atmega 168L
ISC1
ADC
Atmega 168L
IPMB-L
RTM
MMC
IPMB-L
Atmega 128L
IPMB0A
Backplane
IPMB0B
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