12 hardware management subsystem, 1 hardware monitoring and fan control asic, 2 chassis intrusion and detection – chiliGREEN D945GBO User Manual

Page 35: 3 fan monitoring, Hardware management subsystem, Hardware monitoring and fan control asic, Chassis intrusion and detection, Fan monitoring

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Product Description

35

1.12 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

1.12.1 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

Refer to

The location of the fan connectors and sensors for thermal monitoring

Figure 12, page 36

1.12.2 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.

1.12.3 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

Refer to

The functions of the fan connectors

Section 1.13.2.2, page 40

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