Temperature Sensors; Fpga; Table 4-1 Temperature Sensors - SMART Embedded Computing ATCA-F125 Assembly, Installation And Use

Functional Description
4.4.1

Temperature Sensors

The on-board temperature sensors are implemented using National LM75 digital
temperature sensors. The following table provides the location, the upper non critical,
critical and non recoverable temperature thresholds for each of the on-board temperature
sensors. These thresholds will be determined by correlating the sensor temperature to the
critical component temperature during thermal testing.
Table 4-1
Device
Air Inlet Component
Side 1
BIX (BCM56334)
FIX (BCM56820)
SP (P2020)
4.5

FPGA

A Xilinx XC3S700A Spartan 3A family FPGA is used on the board to provide a combination
of glue logic functions and telecom clock support functions. The FPGA functions include
the following:
Local Bus Interface

Local Bus Address Latch and Decoder

Low Pin Count Interface between Host and IPMC

Interrupt Routing Unit

Reset Controller

Local Bus to SPI Interface

Telecom Clocking Support

Service Processor Watchdog Timer

74
Temperature Sensors
Temperature Thresholds
Lower Non Lower
Critical Critical
0 C -5 C
0 C -5 C
0 C -5 C
0 C -5 C
ATCA-F125 (6873M Artwork) Installation and Use (6806800J94P)
Lower Non Upper Non
Recoverable Critical
-10 C 54 C
-10 C 50 C
-10 C 55 C
-10 C 50 C
Functional Description
Upper Upper Non
Critical Recoverable
61 C 72 C
100 C 115 C
100 C 115 C
100 C 115 C