Temperature Sensor; Figure 17 Location Of Temperature Sensor - Motorola PPC/CPCI-690 Reference Manual

Device Bus

Temperature Sensor

5 - 16
The board provides the temperature sensor LM75.
Figure 17: Location of Temperature Sensor
The temperature sensor is connected to the IPMI controller's I2C bus 3 and
can be configured and read via the IPMI controller. The Motorola IPMI
firmware already provides sensor data records (SDRs) containing sensor
configuration data such as temperature threshold values. To check how
many SDRs are provided, use the IPMI command "Get Device SDR Info"
together with the API of the Motorola VxWorks IPMI driver. To read the
SDRs into your system management software, use the IPMI command "Get
Device SDR". To add the provided SDRs to the repository use the IPMI
command "Add SDR".
The temperature values can be read via the Master Write-Read I2C IPMI
command and the I2C slave address together with the API of the Motorola
VxWorks IPMI driver and via the Get Sensor Reading command.
For further information, refer to the VxWorks 5.4/Tornado 2.0 BSP Rel. 2-1 In-
stallation Guide and Release Notes and the IPMI Specification V. 1.0.
Buses
PPC/CPCI-690