Audio Subsystem; Ad1885 Audio Codec; Block Diagram Of Audio Subsystem - Intel D815EGEWLU - P3 Socket 370 MicroATX Motherboard Specification

1.10 Audio Subsystem

The D815EGEW board includes an Audio Codec '97 (AC '97) compatible audio subsystem
consisting of these devices:
•
Intel 82801BA I/O Controller Hub (ICH2)
•
Analog Devices AD1885 analog codec

1.10.1 AD1885 Audio Codec

The AD1885 is a fully AC '97 compliant codec. The codec's features include:
•
> 85 dB signal-to-noise ratio sound quality
•
Power management support for ACPI 1.0 (driver dependant)
•
Playback sample rates up to 48 kHz
•
16 bit stereo full-duplex codec
•
Software compatible with Windows 98 SE, Windows 2000, Windows NT 4.0,
Windows Millennium (Me), and Windows XP
•
Full-duplex operation at asynchronous hardware record/playback samples rates
•
Frequency response: 20 Hz to 20 kHz (± 0.1 dB)
Figure 4 is a block diagram of the D815EGEW board's audio subsystem, including the
Intel 82801BA ICH2 digital controller, the AD1885 analog codec, and the audio connectors.
82801BA
I/O Controller Hub
(ICH2)
For information about
Obtaining the AC '97 specification
Analog Devices
AC '97 Link
Analog Codec
Figure 4. Block Diagram of Audio Subsystem
Line In
Line Out
Mic In
AD1885
Auxiliary Line In
CD-ROM
Product Description
OM12985
Refer to
Table 3, page 16
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