cs4924 Cirrus Logic, Inc., cs4924 Datasheet - Page 22

• Manufacturer Part Number: cs4924
• Description: Multi-channel Digital Audio Decoders Logic
• Manufacturer: Cirrus Logic, Inc.

understanding of both. The ‘ANXXX’ notation
denotes the application note number under which
the respective user’s guide was released.
2.2.1 Hardware Documentation
CS4923/4/5/6/7/8/9 Family Data Sheet - This
document describes the electrical characteristics of
the device from timing to base functionality. This is
the hardware designers tool to learn the part’s
electrical and systems requirements.
AN115 - CS4923/4/5/6/7/8/9 Hardware User’s
Guide - describes the functional aspects of the
device. An in depth description of communication,
boot procedure, external memory and hardware
configuration are given in this document. This
document will be valuable to both the hardware
designer and the system programmer.
2.2.2 CS4923/4/5/6/7/8/9 Application Code
The following application notes describe the
application
CS4923/4/5/6/7/8/9. Whenever an application code
user’s guide is referred to, it should be assumed that
one or more of the below documents are being
referenced. The following list covers currently
released application notes. This list will grow with
each new application released. For a current list of
released user’s guides please see www.crystal.com
and search for the part number.
AN120 - Dolby Digital User’s Guide for the
CS4923/4/5/6. This document covers the features
available in the Dolby Digital code including
delays, pink noise, bass management, Pro Logic,
PCM pass through and Dolby Digital processing
features. Optional appendices are available that
document code for Dolby Virtual, Q-Surround and
VMAx.
AN121 - MPEG User’s Guide for the CS4925.
This document covers the features available in the
22
User’s Guides
codes
used
with
the
MPEG Multi-Channel code including delays, bass
management, Pro Logic, and MPEG processing
features.
AN122 - DTS User’s Guide for the CS4926,
CS4928. This document covers the features
available in the DTS code including bass
management and DTS processing features.
AN123 - Surround User’s Guide for the
CS4923/4/5/6/7/8. This code covers the different
Stereo PCM to surround effects processing code.
Optional appendices are available that document
Crystal Original Surround, Circle Surround and
Logic 7.
AN140 - Broadcast Systems Guide for the
CS4923/4/5/6/7/8/9. This guide describes all
application code (e.g. Dolby Digital, MPEG, AAC)
designed for broadcast systems such as HDTV and
set-top box receivers. This document also provides
a discussion of broadcast system considerations
and dependencies such as A/V synchronization and
channel change procedures.
2.3 Using the CS4923/4/5/6/7/8/9
No matter what application is being used on the
chip, the following four steps are always followed
to use the CS4923/4/5/6/7/8/9 in system.
1) Reset and/or Download Code - Detailed
2) Hardware Configuration - Detailed information
3) Application
4) Kickstart - This is the “Go” command to the
information in AN115
in AN115
information in the appropriate Application
Code User’s guide
CS492X
configured. Information can be found in the
appropriate Application Code User’s guide.
once
configuration
CS4923/4/5/6/7/8/9
the
system
-
is
DS262F2
Detailed
properly