Motherboard Features
16
Hardware Monitor (Optional)
The optional hardware monitor subsystem provides low-cost instrumentation capabilities. The
features of the hardware monitor subsystem include:
• Support for an optional chassis intrusion connector
• An integrated ambient temperature sensor
• Fan speed sensors that monitor the fan 1 and processor active fan connectors (see Figure 15 for
the location of these connectors on the motherboard)
• Power supply voltage monitoring to detect levels above or below acceptable values
When suggested ratings for temperature, fan speed, or voltage are exceeded, an interrupt is
activated. The hardware monitor component connects to the system management (SM) bus.
Audio Subsystem (Optional)
The optional audio subsystem consists of the following:
• Analog Devices AD1819A SoundPort Codec
• Yamaha YMF740 (DS1-L) PCI audio controller
• Back panel and onboard audio connectors
Analog Devices AD1819A SoundPort
Codec
The AC ’97 analog codec features:
• 16-bit stereo full-duplex codec with up to 48 kHz sampling rate
• Variable 7 kHz to 48 kHz sampling rate with 1 Hz resolution
• Phat
†
3D stereo enhancement
Yamaha YMF740 (DS1-L) PCI Audio Controller
The features
include:
• PCI 2.1 compliant
• PC ‘97/PC ’98 specification compliant
• PCI bus Power Management rev. 1.0 compliant
• PCI bus master for PCI audio
• 32 voice XG wavetable synthesizer
• DirectX support
• PC/PCI support for legacy DMAC emulation
• True full duplex playback and capture with different sampling rates
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