Intel Desktop Board DX48BT2 Technical Product Specification

1.10 Audio Subsystem

The board supports the Intel High Definition audio subsystem based on the

IDT STAC9274D 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 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

1.10.1 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 15

1.10.2 Audio Connectors and Headers

The board contains audio connectors and headers on both the back panel and the

component side of the board. The component-side audio headers include the

following:

• Front panel audio (a 2 x 5-pin header that provides mic in and line out signals for

front panel audio connectors)

• High Definition (HD) Audio Link header (a 2 x 8-pin header for S/PDIF) used for

HDMI Video cards

• S/PDIF audio connector (1 x 3-pin connector) can be used for HDMI Video cards

that do not work with the HD Audio header

• S/PDIF output between the back panel Optical connector and the internal S/PDIF

header can be selected in BIOS setup

For information about Refer to

The locations of the front panel audio header, HD Audio Link header, and

S/PDIF audio connector

Figure 11, page 45

The signal names of the front panel audio header Table 11, page 47

The back panel audio connectors Section 2.2.1, page 44