Intel S845WD1-E Product Guide - Page 17

Hardware Management ASIC, Fan Monitoring, Chassis Intrusion and Detection, Real-Time Clock, CMOS SRAM - power supply

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Page 17 highlights

Hardware Management ASIC The Hardware Management ASIC provides low-cost instrumentation capabilities. The features of the component include: • Internal ambient temperature sensing • Remote thermal diode sensing for direct monitoring of processor temperature • Power supply monitoring (+5 V, +3.3 V, +1.5 V, 3.3 VSB, and Vccp) to detect levels above or below acceptable values • SMBus interface Fan Monitoring The Hardware Management ASIC provides four fan tachometer inputs. Monitoring can be implemented using Intel® LANDesk® Client Manager or third-party software. Chassis Intrusion and Detection The S845WD1H server board supports a chassis security feature that detects if the chassis cover is removed. For the chassis intrusion circuit to function, the chassis' power supply must be connected to AC power. 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. ✏ NOTE Chassis intrusion detection may be implemented using Intel LANDesk Client Manager or third-party software. Real-Time Clock, CMOS SRAM, and Battery The real-time clock provides a time-of-day clock and a multi-century calendar with alarm features. The real-time clock supports 256 bytes of battery-backed CMOS SRAM in two banks that are reserved for BIOS use. A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied. The time, date, and CMOS values can be specified in the BIOS Setup program. The CMOS values can be returned to their defaults by using the BIOS Setup program. ✏ NOTE If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on. Description 17

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Description
17
Hardware Management ASIC
The Hardware Management ASIC provides low-cost instrumentation capabilities.
The features of
the component include:
•
Internal ambient temperature sensing
•
Remote thermal diode sensing for direct monitoring of processor temperature
•
Power supply monitoring (+5 V, +3.3 V, +1.5 V, 3.3 VSB, and Vccp) to detect levels above or
below acceptable values
•
SMBus interface
Fan Monitoring
The Hardware Management ASIC provides four fan tachometer inputs.
Monitoring can be
implemented using Intel
®
LANDesk
®
Client Manager or third-party software.
Chassis Intrusion and Detection
The S845WD1H server board supports a chassis security feature that detects if the chassis cover is
removed.
For the chassis intrusion circuit to function, the chassis’ power supply must be
connected to AC power.
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.
NOTE
Chassis intrusion detection may be implemented using Intel LANDesk
Client Manager or third-party software.
Real-Time Clock, CMOS SRAM, and Battery
The real-time clock provides a time-of-day clock and a multi-century calendar with alarm features.
The real-time clock supports 256 bytes of battery-backed CMOS SRAM in two banks that are
reserved for BIOS use.
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory.
When the computer
is not plugged into a wall socket, the battery has an estimated life of three years.
When the
computer is plugged in, the standby current from the power supply extends the life of the battery.
The clock is accurate to
±
13 minutes/year at 25 ºC with 3.3 VSB applied.
The time, date, and CMOS values can be specified in the BIOS Setup program.
The CMOS values
can be returned to their defaults by using the BIOS Setup program.
NOTE
If the battery and AC power fail, custom defaults, if previously saved, will
be loaded into CMOS RAM at power-on.