DG31GL Technical Product Specification

Product Description

1.9 Audio Subsystem

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

ALC268-GR 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 95 dB

Table 4 lists the supported functions of the front panel and back panel audio jacks.

Table 4. Audio Jack Retasking Support

Audio Jack

Supports

Microphone?

Supports

Line Out?

Supports

Line In?

Supports

Front Speaker

Headphones?

Front panel – Green No Yes No Yes

Front panel – Pink Yes No No No

Back panel – Blue No No Yes No

Back panel – Green No Yes No Yes

Back panel – Pink Yes No No No

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

1.2, page 15

1.9.2 Audio Connectors

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

component side of the board. The front panel audio header provides mic in and line

out signals for the front panel.

For information about Refer to

The location of the front panel audio header

Figure 10, page 42

The signal names of the front panel audio header Table 11, page 44

The back panel audio connectors Section 2.2.1, page 41