CS4205 Datasheet, PDF (2/80 Pages) Cirrus Logic – CrystalClear Audio Codec 97 with Portable Computing

CS4205
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................7
Analog Characteristics ........................................................................................................7
Absolute Maximum Ratings ................................................................................................8
Recommended Operating Conditions.................................................................................8
AC ’97 Serial Port Timing..................................................................................................10
2. GENERAL DESCRIPTION ...............................................................................................13
2.1 AC-Link ......................................................................................................................13
2.2 Control Registers .......................................................................................................14
2.3 Sample Rate Converters ...........................................................................................14
2.4 Mixers ........................................................................................................................14
2.5 Input Mux ...................................................................................................................14
2.6 Volume Control ..........................................................................................................14
2.7 Dedicated Mic Record Path .......................................................................................14
3. DIGITAL SIGNAL PATHS ................................................................................................16
3.1 Analog Centric Mode .................................................................................................16
3.2 Digital Centric Mode ..................................................................................................17
3.3 Host Processing Mode ..............................................................................................17
3.4 Multi-Channel Mode ..................................................................................................17
4. AC-LINK FRAME DEFINITION ........................................................................................19
4.1 AC-Link Serial Data Output Frame ............................................................................20
4.1.1 Serial Data Output Slot Tags (Slot 0) ...........................................................20
4.1.2 Command Address Port (Slot 1) ..................................................................20
4.1.3 Command Data Port (Slot 2) ........................................................................21
4.1.4 PCM Playback Data (Slots 3-11) .................................................................21
4.1.5 GPIO Pin Control (Slot12) ............................................................................21
4.2 AC-Link Serial Data Input Frame ..............................................................................22
4.2.1 Serial Data Input Slot Tag Bits (Slot 0) ......................................................22
4.2.2 Status Address Port (Slot 1) .........................................................................22
4.2.3 Status Data Port (Slot 2) ..............................................................................23
4.2.4 PCM Capture Data (Slot 3-8) .......................................................................23
4.2.5 GPIO Pin Status (Slot 12) ...........................................................................23
4.3 AC-Link Protocol Violation - Loss of SYNC ...............................................................24
5. REGISTER INTERFACE .............................................................................................25
5.1 Reset Register (Index 00h) ......................................................................................27
5.2 Master Volume Register (Index 02h) .......................................................................27
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/sales.cfm
Microsoft is a registered trademark of Microsoft Corporation in the United States and/or other countries.
Intel is a registered trademark of Intel Corporation.
CrystalClear is a registered trademark of Cirrus Logic.
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any
kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third
parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of this publi-
cation may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise)
without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no part of the
printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photo-
graphic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture or
sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing in
this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trade-
marks and service marks can be found at http://www.cirrus.com.
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