Audio Subsystem; Audio Connectors - Intel D845EPI Specification

1.10 Audio Subsystem

The audio subsystem consists of the following devices:
•
Intel 82801DB I/O Controller Hub (ICH4)
•
Realtek ALC202A audio codec
The audio subsystem includes these features:
• Signal-to-noise ratio ≥ 90 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-style connector: CD-ROM
•
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 54 for more information.
1.10.1.2 ATAPI CD-ROM Audio Connector
A 1 x 4-pin ATAPI-style connector connects an internal ATAPI CD-ROM drive to the audio
mixer.
For information about
The location of the ATAPI CD-ROM connector
The signal names of the ATAPI CD-ROM connector
Product Description
Refer to
Figure 5, page 46
Table 17, page 47
Section 1.5, page 17
Refer to
Figure 5, page 46
Table 18, page 47
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