CS4205 datasheet(2/80 Pages) CIRRUS

2 / 80 page

CS4205

DS489PP2

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

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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

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