[AK4951A]
016001936-E-00 2016/03
- 3 -
3. Table of Contents
1. General Description............................................................................................................................. 1
2. Features............................................................................................................................................... 1
3. Table of Contents................................................................................................................................ 3
4. Block Diagram and Functions............................................................................................................. 5
■Block Diagram.................................................................................................................................... 5
■Comparison Table to AK4951............................................................................................................ 6
5. Pin Configurations and Functions....................................................................................................... 7
■Pin Layout........................................................................................................................................... 7
■PIN/FUNCTION.................................................................................................................................. 8
■Handling of Unused Pin ..................................................................................................................... 9
6. Absolute Maximum Ratings................................................................................................................. 9
7. Recommended Operating Conditions............................................................................................... 10
8. Electrical Characteristics................................................................................................................... 11
■Analog Characteristics..................................................................................................................... 11
■Power Consumption on Each Operation Mode ............................................................................... 14
■Filter Characteristics......................................................................................................................... 15
■DC Characteristics ........................................................................................................................... 16
■Switching Characteristics................................................................................................................. 17
■Timing Diagram................................................................................................................................ 20
9. Functional Descriptions..................................................................................................................... 24
■System Clock ................................................................................................................................... 24
■Master Mode/Slave Mode................................................................................................................ 24
■PLL Mode......................................................................................................................................... 25
■PLL Unlock State.............................................................................................................................. 28
■PLL Master Mode (PMPLL bit = “1”, M/S bit = “1”) .......................................................................... 29
■PLL Slave Mode (PMPLL bit = “1”, M/S bit = “0”) ............................................................................ 29
■EXT Slave Mode (PMPLL bit = “0”, M/S bit = “0”)............................................................................ 30
■EXT Master Mode (PMPLL bit = “0”, M/S bit = “1”) ......................................................................... 31
■System Reset................................................................................................................................... 32
■Audio Interface Format..................................................................................................................... 34
■ADC Mono/Stereo Mode.................................................................................................................. 36
■MIC/LINE Input Selector .................................................................................................................. 36
■Microphone Gain Amplifier............................................................................................................... 37
■Microphone Power ........................................................................................................................... 37
■Digital Microphone............................................................................................................................ 38
■Digital Block...................................................................................................................................... 40
■Digital HPF1..................................................................................................................................... 42
■Microphone Sensitivity Correction ................................................................................................... 42
■Automatic Wind Noise Reduction Filter ........................................................................................... 43
■Digital Programmable Filter Circuit.................................................................................................. 44
■ALC Operation.................................................................................................................................. 50
■Input Digital Volume (Manual Mode)................................................................................................ 56
■Sidetone Digital Volume................................................................................................................... 57
■DAC Input Selector........................................................................................................................... 57
■DAC Mono/Stereo Mode.................................................................................................................. 57
■Output Digital Volume...................................................................................................................... 57
■Soft Mute.......................................................................................................................................... 58
■BEEP Input....................................................................................................................................... 59
■Charge Pump Circuit........................................................................................................................ 61
■Headphone Amplifier (HPL/HPR pins)............................................................................................. 61
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