Datasheet

Intel Desktop Board D925XHY Technical Product Specification
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1.8 Audio Subsystem
The board supports the Intel High Definition audio subsystem based on the Realtek ALC880 audio
codec. The audio subsystem supports the following features:
• Advanced jack sense (front and rear panel) that enables the audio codec to recognize the device
that is connected to an audio port. All jacks are capable of retasking according to user’s
definition, or can be automatically switched depending on the recognized device type.
• Stereo input and output for all jacks
• A signal-to-noise (S/N) ratio of 90 dB
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INTEGRATOR’S NOTE
For the front panel jack sensing and automatic retasking feature to function, a front panel daughter
card that is designed for Intel High Definition Audio must be used. Otherwise, an AC ’97 style
audio front panel connector will be assumed and the Line Out and Mic In functions will be
permanent.
1.8.1 Audio Subsystem Software
Audio software and drivers are available from Intel’s World Wide Web site.
For information about
Refer to
Obtaining audio software and drivers Section 1.2, page 15
1.8.2 Audio Connectors
The board contains audio connectors on both the back panel and the component side of the board.
The front panel audio connector (a 2 x 5-pin connector that provides mic in and line out signals for
front panel audio connectors) is located on the component side of the board.
For information about Refer to
The location of the front panel audio connector Figure 16, page 52
The signal names of the front panel audio connector Table 16, page 54
The back panel audio connectors Section 2.8.1, page 50
1.8.3 8-Channel (7.1) Audio Subsystem
The 8-channel (7.1) audio subsystem includes the following:
• Intel 82801FR I/O Controller Hub (ICH6-R)
• Realtek ALC880 audio codec
• Microphone input that supports a single dynamic, condenser, or electret microphone
The front and back panel audio connectors are configurable through the audio device drivers. The
available configurable audio ports are shown in Figure 9.
For information about Refer to
The back panel audio connectors Section 2.8.1, page 50