Audio Subsystem; Audio Connectors - Intel BOXD845GLVAL - 845GL CEL/P4 400MHZ FSB UATX Specification

1.10 Audio Subsystem

The audio subsystem consists of the following devices:
•
Intel 82801DB I/O Controller Hub (ICH4)
•
SigmaTel STAC9750 audio codec
The audio subsystem includes these features:
• SigmaTel Σ∆ technology for a S/N (signal-to-noise) ratio: ≥ 85 dB
•
Supports wake events (driver dependent)
•
Mic in pre-amp that supports dynamic, condenser, and electret microphones
The audio subsystem supports the following audio interfaces:
•
ATAPI CD-ROM connector
•
ATAPI-style auxiliary line input connector (optional)
•
Front panel audio connector, including pins for:
 Line out
 Mic in
•
Back panel audio connectors:
 Line out
 Line in
 Mic in

1.10.1 Audio Connectors

1.10.1.1 Front Panel Audio Connector
A 2 x 5-pin connector provides mic in and line out signals for front panel audio connectors.
For information about
The location of the connector
The signal names of the front panel audio connector
Obtaining the Front Panel I/O Connectivity Design Guide
✏
NOTE
The front panel audio connector is alternately used as a jumper block for routing audio signals.
Refer to Section 2.9.1 on page 58 for more information.
1.10.1.2 Auxiliary Line In Connector (Optional)
An 1 x 4-pin ATAPI-style connector connects the left and right channel signals of an internal audio
device to the audio subsystem.
For information about
The location of the optional auxiliary line in connector
The signal names of the optional auxiliary line in connector
Product Description
Refer to
Figure 5, page 50
Table 21, page 51
Section 1.5, page 17
Refer to
Figure 5, page 50
Table 22, page 51
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