System Management Controller; Sensors Implemented On The Cp308; Processor And Chipset Sensors And Signals - Kontron CP308 User Manual

CP308
2.4

System Management Controller

A dedicated System Management Controller (SMC) on the CP308 manages system relevant
tasks and supports SMC commands and sensors.
The SMC can measure onboard voltages and temperature values, and control and supervise
fans and other CompactPCI cards in a system. The control and supervision of CompactPCI
cards is performed via the I²C bus (IPMB) on the CompactPCI connector J1.
The SMC communicates with the processor via the Keyboard Controller Style (KCS) interface,
which is at the I/O location 0xCA2 and 0xCA3.
To read status information (e.g. POST code) and configure some CPLD registers, the SMC can
directly communicate with the onboard CPLD chip via an I²C interface.
2.4.1

Sensors Implemented on the CP308

The CP308 implements several sensors such as sensors for temperature, voltage, power sup-
ply, fan, etc.
Table 2-20: Processor and Chipset Sensors and Signals
FUNCTION
PLT reset
Board reset
S3 sleep state
Power button
uEFI BIOS Flash select
Table 2-21: CPCI-Specific Sensors
FUNCTION
CPCI GA[4:0]
CPCI SYSEN#
CPCI DEG#
CPCI FAL#
ID 1027-4487, Rev. 3.0
Status of the platform reset signal
Reset the host processor
Status of chipset sleep state
Set chipset power button signal
uEFI BIOS fail-over control
CPCI Geographic address
CPCI System slot indication
CPCI power derate status
CPCI power fail status
Functional Description
DESCRIPTION
DESCRIPTION
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