Hardware Management Subsystem; Hardware Monitoring And Fan Control Asic; Chassis Intrusion And Detection; Fan Monitoring - Intel D945PLRN Specification

1.10 Hardware Management Subsystem

The hardware management features enable the board to be compatible with the Wired for
Management (WfM) specification. The board has several hardware management features,
including the following:
•
Chassis intrusion detection
•
Fan monitoring and control (through the hardware monitoring and fan control ASIC)
•
Thermal and voltage monitoring

1.10.1 Hardware Monitoring and Fan Control ASIC

The features of the hardware monitoring and fan control ASIC include:
•
Internal ambient temperature sensor
•
Two remote thermal diode sensors for direct monitoring of processor temperature and ambient
temperature sensing
•
Power supply monitoring of five voltages (+5 V, +12 V, +3.3 VSB, +1.5 V, and +VCCP) to
detect levels above or below acceptable values
•
Thermally monitored closed-loop fan control, for all three fans, that can adjust the fan speed or
switch the fans on or off as needed
•
SMBus interface
For information about
The location of the fan connectors and sensors for thermal monitoring

1.10.2 Chassis Intrusion and Detection

The board supports a chassis security feature that detects if the chassis cover is removed. The
security feature uses a mechanical switch on the chassis that attaches to the chassis intrusion
connector. When the chassis cover is removed, the mechanical switch is in the closed position.

1.10.3 Fan Monitoring

Fan monitoring can be implemented using Intel Desktop Utilities or third-party software. The level
of monitoring and control is dependent on the hardware monitoring ASIC used with the board.
For information about
The functions of the fan connectors
Product Description
Refer to
Figure 10, page 34
Refer to
Section 1.11.2.2, page 38
33