CS4294

2

DS326PP4

TABLE OF CONTENTS

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

AUDIO ANALOG CHARACTERISTICS.................................................................................... 5

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 6

RECOMMENDED OPERATING CONDITIONS ....................................................................... 6

MIXER CHARACTERISTICS.................................................................................................... 6

DIGITAL CHARACTERISTICS ................................................................................................. 6

SERIAL PORT TIMING............................................................................................................. 7

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

2.1 Overview .......................................................................................................................... 10

2.2 Modes of Operation .........................................................................................................10

2.2.1 Mode 0 ................................................................................................................ 10

2.2.2 Mode 1 ................................................................................................................ 10

3. DIGITAL SECTION ................................................................................................................. 10

3.1 AC-Link ............................................................................................................................ 10

3.2 Control registers ............................................................................................................... 11

4. ANALOG SECTION ................................................................................................................ 11

4.1 Audio Output Mixer .......................................................................................................... 12

4.2 Audio Input Mux ............................................................................................................... 12

4.3 Audio Input Mixer ............................................................................................................. 12

4.4 Audio Volume Control ...................................................................................................... 12

5. AC ‘97 ..................................................................................................................................... 12

5.1 AC ‘97 Frame Definition ................................................................................................... 12

5.2 AC-Link Serial Data Output Frame .................................................................................. 12

5.3 AC-Link Audio Output Frame ........................................................................................... 13

5.3.1 Serial Data Output Slot Tags (Slot 0)................................................................... 13

5.3.2 Register Address (Slot 1) ..................................................................................... 13

5.3.3 Register Write Data (Slot 2) ................................................................................. 14

5.3.4 Playback Data (Slots 3-11) .................................................................................. 14

5.3.5 GPIO Data (Slot12) .............................................................................................. 14

5.4 AC-Link Audio Input Frame .............................................................................................. 14

5.4.1 Serial Data Input Slot Tag Bits (Slot 0) ............................................................... 14

5.4.2 Read-Back Address Port (Slot 1) ......................................................................... 15

5.4.3 Read-Back Data Port (Slot 2)............................................................................... 15

5.4.4 PCM Capture Data (Slot 3-11) ............................................................................. 15

5.4.5 GPIO Pin Status (Slot 12) .................................................................................... 15

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