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AK4637EN Datasheet(PDF) 3 Page - Asahi Kasei Microsystems |
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AK4637EN Datasheet(HTML) 3 Page - Asahi Kasei Microsystems |
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3 / 96 page  [AK4637] 015010680-E-00 2015/09 - 3 - 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 |
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