AK4637 Datasheet, PDF (3/96 Pages) Asahi Kasei Microsystems – 24bit Mono CODEC with MIC - SPK-AMP

[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
■ Pin Layout .......................................................................................................................................... 6
■ Comparison Table of the AK4951EN................................................................................................. 7
■ PIN/FUNCTION.................................................................................................................................. 9
■ Handling of Unused Pin ..................................................................................................................... 9
6. Absolute Maximum Ratings............................................................................................................... 10
7. Recommended Operating Conditions ............................................................................................... 10
8. Electrical Characteristics ................................................................................................................... 11
■ Analog Characteristics ..................................................................................................................... 11
■ Power Consumption on Each Operation Mode ............................................................................... 13
■ Filter Characteristics ........................................................................................................................ 14
■ DC Characteristics ........................................................................................................................... 15
■ Switching Characteristics ................................................................................................................. 16
■ Timing Diagram ................................................................................................................................ 20
9. Functional Descriptions ..................................................................................................................... 27
■ System Clock ................................................................................................................................... 27
■ Master Mode/Slave Mode ................................................................................................................ 27
■ PLL Mode ......................................................................................................................................... 28
■ 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”) ............................................................................ 31
■ EXT Slave Mode (PMPLL bit = “0”, M/S bit = “0”) ........................................................................... 32
■ EXT Master Mode (PMPLL bit = “0”, M/S bit = “1”) ......................................................................... 33
■ System Reset ................................................................................................................................... 34
■ Audio Interface Format .................................................................................................................... 35
■ MIC/LINE Input Selector .................................................................................................................. 39
■ Microphone Gain Amplifier............................................................................................................... 39
■ Microphone Power ........................................................................................................................... 40
■ Digital Microphone ........................................................................................................................... 41
■ Digital Block ..................................................................................................................................... 43
■ Digital HPF1 ..................................................................................................................................... 45
■ Digital Programmable Filter Circuit .................................................................................................. 45
■ ALC Operation ................................................................................................................................. 50
■ Input Digital Volume (Manual Mode) ............................................................................................... 56
■ Sidetone Digital Volume................................................................................................................... 57
■ DAC Input Selector .......................................................................................................................... 57
■ Output Digital Volume ...................................................................................................................... 57
■ Soft Mute .......................................................................................................................................... 58
■ BEEP Input....................................................................................................................................... 59
■ Speaker Output (SPP/SPN pins, LOSEL bit = “0”).......................................................................... 60
■ Thermal Shutdown Function ............................................................................................................ 61
■ Monaural Line Output (AOUT pin, LOSEL bit = “1”)........................................................................ 62
■ Regulator Block................................................................................................................................ 64
■ Serial Control Interface .................................................................................................................... 65
■ Register Map .................................................................................................................................... 68
■ Register Definitions .......................................................................................................................... 70
015010680-E-00
-3-
2015/09