FW82801EB S L73Z Intel, FW82801EB S L73Z Datasheet - Page 47

• Manufacturer Part Number: FW82801EB S L73Z
• Manufacturer: Intel

Specifications of FW82801EB S L73Z

• Lead Free Status / RoHS Status: Not Compliant

Introduction
AC ’97 2.3 Controller
The AC ’97 v2.3 Specification defines a digital interface that can be used to attach an audio codec
(AC), a modem codec (MC), an audio/modem codec (AMC) or a combination of ACs and MC. The
AC ’97 v2.3 Specification defines the interface between the system logic and the audio or modem
codec, known as the AC-link.
By using an audio codec, the AC-link allows for cost-effective, high-quality, integrated audio on
Intel’s chipset-based platform. In addition, an AC ’97 soft modem can be implemented with the use
of a modem codec. Several system options exist when implementing AC ’97. The ICH5-integrated
digital link allows several external codecs to be connected to the ICH5. The system designer can
provide audio with an audio codec, a modem with a modem codec, or an integrated audio/modem
codec. The digital link is expanded to support three audio codecs or two audio codecs and one
modem codec.
The modem implementations for different countries must be taken into consideration, because
telephone systems may vary. By using a split design, the audio codecs can be on-board and the
modem codec can be placed on a riser.
The digital link in the ICH5 supports the AC ’97 v2.3 Specification, so it supports three codecs with
independent PCI functions for audio and modem. Microphone input and left and right audio
channels are supported for a high quality, two-speaker audio solution. Wake on Ring from Suspend
also is supported with the appropriate modem codec.
The ICH5 expands the audio capability with support for up to six channels of PCM audio output
(full AC3 decode). Six-channel audio consists of Front Left, Front Right, Back Left, Back Right,
Center, and Subwoofer, for a complete surround-sound effect. ICH5 has expanded support for three
audio codecs on the AC-link.
Alert Standard Format (ASF) Controller
The Alert Standard Format Specification, Version 1.03 supported by the ICH5, defines ASF
alerting capabilities including system health information such as BIOS messages, POST alerts, OS
failure notifications, and heartbeat signals to indicate the system is up and running on the network.
Also included are environmental notifications such as thermal, voltage and fan alerts, which send
proactive warnings that something is wrong with the hardware. In addition, asset security is
provided by messages such as “cover tamper” and “CPU missing” that notify an IT manager of
potential system break-ins and processor or memory theft.
®
Intel
82801EB ICH5 / 82801ER ICH5R Datasheet
47