70 SBC329 3U VPX Single Board Computer
Publication No. SBC329-HRM/1
The on-board sensors can be accessed at the following addresses:
Table 5-18 BMM I
2
C Bus Devices
Device
7-bit Address 8-bit Write Address
BMM (Master)
Master only
Master only
TMP442A temperature sensor
0x4C
0x9A
XMC EEPROM (if fitted)
0x50
0xA0
LTC3880 power supply PMBus interface (VDDQ & VCC_IO internal rails)
0x43
0x86
LTC3880 power supply PMBus interface (P1V0 internal rail)
0x4A
0x94
LTC3880 power supply PMBus interface (P0V9 & P0V9A internal rails)
0x40
0x80
LT2975 Backplane PMBus power monitor
0x5C
0xD8
5.18.1
Board Temperature Sensor
A Texas Instruments TPM442A digital temperature sensor monitors the locations
shown below, which can be used by system health monitoring software (either on
the SBC329 or on an external IPMI controller) to determine the ambient operating
temperature of the board. The sensor t
ypically has an accuracy of ±0.25˚C.
Table 5-19 Temperature Sensor Monitor Locations
Location
TPM442A Channel
Local PCB
Local
PEX8725 Core
Remote 1
Remote PCB
Remote 2
Figure 5-8 Local and Remote PCB Sensor Locations
Local
Remote