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AK4637EN Datasheet, PDF (3/96 Pages) Asahi Kasei Microsystems – 24bit Mono CODEC with MIC/SPK-AMP | |||
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[AK4637]
3. Table of Contents
1. General Description............................................................................................................................. 1
2. Features............................................................................................................................................... 1
3. Table of Contents ................................................................................................................................ 3
4. Block Diagram ..................................................................................................................................... 5
5. Pin Configurations and Functions ....................................................................................................... 6
â Pin Layout .......................................................................................................................................... 6
â Comparison Table of the AK4951EN................................................................................................. 7
â PIN/FUNCTION.................................................................................................................................. 9
â Handling of Unused Pin ..................................................................................................................... 9
6. Absolute Maximum Ratings............................................................................................................... 10
7. Recommended Operating Conditions ............................................................................................... 10
8. Electrical Characteristics ................................................................................................................... 11
â Analog Characteristics ..................................................................................................................... 11
â Power Consumption on Each Operation Mode ............................................................................... 13
â Filter Characteristics ........................................................................................................................ 14
â DC Characteristics ........................................................................................................................... 15
â Switching Characteristics ................................................................................................................. 16
â Timing Diagram ................................................................................................................................ 20
9. Functional Descriptions ..................................................................................................................... 27
â System Clock ................................................................................................................................... 27
â Master Mode/Slave Mode ................................................................................................................ 27
â PLL Mode ......................................................................................................................................... 28
â PLL Unlock State ............................................................................................................................. 28
â PLL Master Mode (PMPLL bit = â1â, M/S bit = â1â) .......................................................................... 29
â PLL Slave Mode (PMPLL bit = â1â, M/S bit = â0â) ............................................................................ 31
â EXT Slave Mode (PMPLL bit = â0â, M/S bit = â0â) ........................................................................... 32
â EXT Master Mode (PMPLL bit = â0â, M/S bit = â1â) ......................................................................... 33
â System Reset ................................................................................................................................... 34
â Audio Interface Format .................................................................................................................... 35
â MIC/LINE Input Selector .................................................................................................................. 39
â Microphone Gain Amplifier............................................................................................................... 39
â Microphone Power ........................................................................................................................... 40
â Digital Microphone ........................................................................................................................... 41
â Digital Block ..................................................................................................................................... 43
â Digital HPF1 ..................................................................................................................................... 45
â Digital Programmable Filter Circuit .................................................................................................. 45
â ALC Operation ................................................................................................................................. 50
â Input Digital Volume (Manual Mode) ............................................................................................... 56
â Sidetone Digital Volume................................................................................................................... 57
â DAC Input Selector .......................................................................................................................... 57
â Output Digital Volume ...................................................................................................................... 57
â Soft Mute .......................................................................................................................................... 58
â BEEP Input....................................................................................................................................... 59
â Speaker Output (SPP/SPN pins, LOSEL bit = â0â).......................................................................... 60
â Thermal Shutdown Function ............................................................................................................ 61
â Monaural Line Output (AOUT pin, LOSEL bit = â1â)........................................................................ 62
â Regulator Block................................................................................................................................ 64
â Serial Control Interface .................................................................................................................... 65
â Register Map .................................................................................................................................... 68
â Register Definitions .......................................................................................................................... 70
015010680-E-00
-3-
2015/09
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