CS4202

2

DS549PP2

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

3. AC-LINK FRAME DEFINITION .............................................................................................. 16

3.1 AC-Link Serial Data Output Frame .................................................................................. 17

3.1.1 Serial Data Output Slot Tags (Slot 0)............................................................................. 17

3.1.2 Command Address Port (Slot 1) .................................................................................... 17

3.1.3 Command Data Port (Slot 2).......................................................................................... 18

3.1.4 PCM Playback Data (Slots 3-4,6-11) ............................................................................. 18

3.1.5 GPIO Pin Control (Slot12).............................................................................................. 18

3.2 AC-Link Serial Data Input Frame ..................................................................................... 19

3.2.1 Serial Data Input Slot Tag Bits (Slot 0) ........................................................................ 19

3.2.2 Status Address Port (Slot 1) .......................................................................................... 19

3.2.3 Status Data Port (Slot 2) ................................................................................................ 20

3.2.4 PCM Capture Data (Slot 3-4,6-8,11).............................................................................. 20

3.2.5 GPIO Pin Status (Slot 12) ............................................................................................. 20

3.3 AC-Link Protocol Violation - Loss of SYNC ..................................................................... 21

4. REGISTER INTERFACE

..................................................................................................... 22

4.1 Reset Register (Index 00h) .............................................................................................. 23

4.2 Analog Mixer Output Volume Registers (Index 02h - 04h) .............................................. 23

4.3 Mono Volume Register (Index 06h) .................................................................................. 24

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

IMPORTANT NOTICE

"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. Cirrus Logic, Inc. and its

subsidiaries ("Cirrus") believe 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). Customers are advised to obtain the latest version of relevant information to

verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied

at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for

the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of

third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask

work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained here-

in and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of

Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for

resale.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE

PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED

FOR USE IN AIRCRAFT SYSTEMS, MILITARY APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SE-

CURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS

IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IM-

PLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS

PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PROD-

UCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES,

DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR

ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trade-

marks or service marks of their respective owners.