CS4201

2

DS483PP3

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 3-11) .................................................................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 3-8) .......................................................................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

4.4 PC_BEEP Volume Register (Index 0Ah) ..................................................................24

4.5 Phone Volume Register (Index 0Ch) ........................................................................24

4.6 Microphone Volume Register (Index 0Eh) ................................................................25

4.7 Analog Mixer Input Gain Registers (Index 10h - 18h) ...............................................26

4.8 Input Mux Select Register (Index 1Ah) .....................................................................27

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