Intel Desktop Board DX79TO Technical Product Specification
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1.9 Audio Subsystem
The board supports the Intel High Definition Audio subsystem based on the Realtek
ALC892 audio codec. The audio subsystem supports the following features:
• Advanced jack sense for the back panel audio jacks that enables the audio codec to
recognize the device that is connected to an audio port. The back panel audio
jacks are capable of retasking according to the user’s definition, or can be
automatically switched depending on the recognized device type.
• Stereo input and output for all back panel jacks
• Line out and Mic in functions for front panel audio jacks
• A signal-to-noise (S/N) ratio of 90 dB
Table 5 lists the supported functions of the front panel and back panel audio jacks.
Table 5. Audio Jack Support
Audio Jack
Micro-
phone
Head-
phones
Front
Speaker
Line In
Side
Surround
FP Green Default
FP Pink Default
Rear Blue Default
Rear Green Ctrl panel Default
Rear Pink Default Ctrl panel
1.9.1 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 1.3, page 16
1.9.2 Audio Subsystem Components
The audio subsystem includes the following components:
• Intel X79 Express Chipset
• Realtek ALC892 audio codec
• Front panel audio header that supports Intel HD audio and AC ’97 audio (a 2 x 5-
pin header that provides mic in and line out signals for front panel audio
connectors) (yellow)
• 3-port analog audio input/output stack on the back panel
The back panel audio connectors are configurable through the audio device drivers.
The available configurable back panel audio connectors are shown in Figure 4.