SMART 6873M Artwork, Installation And Use Manual

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74 ATCA-F125 (6873M Artwork) Installation and Use (6806800J94N)
Functional Description
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.
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
Table 4-1 Temperature Sensors
Device Temperature Thresholds
Lower Non
Critical Lower
Critical Lower Non
Recoverable Upper Non
Critical Upper
Critical Upper Non
Recoverable
Air Inlet Component
Side 1
0 C -5 C -10 C 54 C 61 C 72 C
BIX (BCM56334) 0 C -5 C -10 C 50 C 100 C 115 C
FIX (BCM56820) 0 C -5 C -10 C 55 C 100 C 115 C
SP (P2020) 0 C -5 C -10 C 50 C 100 C 115 C