CS4299

2

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS .................................................................5

Analog Characteristics ........................................................................................................5

Mixer Characteristics ..........................................................................................................6

Absolute Maximum Ratings ................................................................................................6

Recommended Operating Conditions.................................................................................6

Digital Characteristics .........................................................................................................6

AC ’97 Serial Port Timing....................................................................................................7

2. GENERAL DESCRIPTION ...............................................................................................10

2.1 AC-Link ....................................................................................................................10

2.2 Control registers ......................................................................................................10

2.3 Output Mixer .............................................................................................................11

2.4 Input Mux .................................................................................................................11

2.5 Volume Control ........................................................................................................11

3. AC LINK FRAME DEFINITION .........................................................................................13

3.1 AC-Link Serial Data Output Frame ..........................................................................14

3.1.1 Serial Data Output Slot Tags (Slot 0) ...........................................................14

3.1.2 Command Address Port (Slot 1) ..................................................................15

3.1.3 Command Data Port (Slot 2) ........................................................................15

3.1.4 PCM Playback Data (Slots 3-10) .................................................................15

3.2 AC-Link Audio Input Frame ......................................................................................16

3.2.5 Serial Data Input Slot Tag Bits (Slot 0) .......................................................16

3.2.6 Status Address Port (Slot 1) .........................................................................16

3.2.7 Status Data Port (Slot 2) ..............................................................................17

3.2.8 PCM Capture Data (Slot 3-10) .....................................................................17

3.3 AC-Link Protocol Violation - Loss of SYNC ..............................................................18

4. REGISTER INTERFACE ..................................................................................................19

4.3 Reset Register (Index 00h) ......................................................................................20

4.4 Master Volume Register (Index 02h) .......................................................................20

4.5 Alternate Volume Register (Index 04h) ....................................................................21

4.6 Mono Volume Register (Index 06h) .........................................................................21

4.7 PC_BEEP Volume Register (Index 0Ah) .................................................................22

4.8 Phone Volume Register (Index 0Ch) ........................................................................22

4.9 Microphone Volume Register (Index 0Eh) ................................................................23

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