AK4951AEN Datasheet, PDF (3/105 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4951A]
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
016001936-E-00
-3-
2016/03