Audio Subsystem; Ad1885 Audio Codec; Audio Connectors; Block Diagram Of Audio Subsystem - Intel D815EEA2 Technical Product Specification

1.11 Audio Subsystem

The D815EEA2 and D815EPEA2 boards both include 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

1.11.1 AD1885 Audio Codec

The AD1885 is a fully AC '97 compliant codec. The codec's features include:
> 90 dB signal-to-noise ratio sound quality
Power management support for APM 1.2 and 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, and
Windows Millennium (Me)
Full-duplex operation at asynchronous hardware record/playback samples rates
Frequency response: 20 Hz to 20 kHz (± 0.1 dB)
Figure 9 is a block diagram of the D815EEA2 and D815EPEA2 boards' 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

1.11.2 Audio Connectors

The audio connectors include the following:
Front panel audio (optional):
Mic in
Line out
ATAPI-style connectors:
CD-ROM
Auxiliary line in
Analog Devices
AC '97 Link
Analog Codec
Figure 9. Block Diagram of Audio Subsystem
CD-ROM
Line In
Audio In
AD1885
Mic In
Front Panel Audio (optional)
Line Out
Refer to
Table 4, page 19
Product Description
OM11888
43