ii
11050A–PMAAC–07-Apr-10
AT73C246
12 Audio Codec Functional Description ................................................... 55
12.1Description .............................................................................................................55
12.2Audio Codec Block Diagram ..................................................................................55
12.3Audio Codec Controls ............................................................................................56
12.4Audio Controller .....................................................................................................57
12.5Audio Codec Power Consumption Versus Programmed Audio Path ....................63
12.6Digital Audio Interface ...........................................................................................66
12.7Digital Filters Transfer Function .............................................................................68
12.8Analog Audio Interfaces ........................................................................................74
13 Two Wire Interface and Control Registers ........................................... 77
13.1Two-wire Interface (TWI) Protocol .........................................................................77
13.2PMU Register Tables ............................................................................................79
14 PMU and Audio Soft Control: Quick Start ......................................... 132
14.1RTC Examples ....................................................................................................132
14.2Audio Examples ...................................................................................................134
15 Typical Performance Characteristics ................................................. 139
15.1PMU: Power Supply Sequences .........................................................................139
15.2DCDC0 and DCDC1 ............................................................................................142
15.3LDO2 ...................................................................................................................146
15.4LDO3 ...................................................................................................................147
15.5AUDIO .................................................................................................................148
16 Package Information ............................................................................ 153
17 Ordering Information ........................................................................... 154
18 Revision History ................................................................................... 155
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