FW82801DB S L66K Intel, FW82801DB S L66K Datasheet - Page 230

• Manufacturer Part Number: FW82801DB S L66K
• Manufacturer: Intel

Specifications of FW82801DB S L66K

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Functional Description
5.19.2
230
Figure 5-21. AC ’97 2.3 Controller-Codec Connection
AC-Link Overview
The ICH4 supports the AC ’97 2.3 controller that communicates with companion codecs via a
digital serial link called the AC-link. All digital audio/modem streams and command/status
information is communicated over the AC-link.
The AC-link is a bi-directional, serial PCM digital stream. It handles multiple input and output data
streams, as well as control register accesses, employing a time division multiplexed (TDM)
scheme. The AC-link architecture provides for data transfer through individual frames transmitted
in a serial fashion. Each frame is divided into 12 outgoing and 12 incoming data streams, or slots.
The architecture of the ICH4 AC-link allows a maximum of three codecs to be connected.
Figure 5-21
shows a three codec topology of the AC-link for the ICH4.
Intel
®
ICH4
AC_SDIN2
AC_SDIN1
AC_SDIN0
AC_RST#
AC_SDOUT
AC_SYNC
AC_BIT_CLK
Intel
®
Secondary Codec
AC / MC / AMC
AC / MC / AMC
AC / MC / AMC
Primary Codec
Tertiary Codec
82801DB ICH4 Datasheet