User Manual

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
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http://www.cirrus.com/corporate/contacts/sales.cfm
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