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DA7217-00U36 Datasheet(PDF) 4 Page - Dialog Semiconductor |
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DA7217-00U36 Datasheet(HTML) 4 Page - Dialog Semiconductor |
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4 / 171 page  DA7217 Ultra-Low Power Stereo Codec Datasheet Revision 2.5 01 Sep 2016 CFR0011-120-00 4 of 171 © 2016 Dialog Semiconductor 4.7.2 VDD_IO................................................................................................................ 14 4.7.3 VDD_MIC............................................................................................................. 14 4.8 Ground Pins ........................................................................................................................ 14 4.8.1 GND ..................................................................................................................... 14 4.8.2 GND_CP .............................................................................................................. 14 5 Absolute Maximum Ratings ....................................................................................................... 15 6 Recommended Operating Conditions....................................................................................... 15 7 Electrical Characteristics ........................................................................................................... 16 8 Digital Interfaces ......................................................................................................................... 23 9 Functional Description ............................................................................................................... 26 9.1 Device Operation ................................................................................................................ 26 9.1.1 Power Modes ....................................................................................................... 26 9.1.1.1 STANDBY Mode.............................................................................. 26 9.1.1.2 ACTIVE Mode.................................................................................. 26 9.2 Input Paths .......................................................................................................................... 26 9.2.1 Microphone Inputs ............................................................................................... 26 9.2.1.1 Microphone Biases .......................................................................... 27 9.2.1.2 Microphone Amplifier ....................................................................... 28 9.2.1.3 Digital Microphones ......................................................................... 28 9.2.1.4 Input Amplifiers ................................................................................ 29 9.2.2 Analog to Digital Converters ................................................................................ 30 9.2.2.1 High Performance Mode.................................................................. 30 9.2.2.2 Low-Power Mode............................................................................. 30 9.2.2.3 Anti-Alias Filters............................................................................... 30 9.3 Digital Engine ...................................................................................................................... 31 9.3.1 Input Processing .................................................................................................. 32 9.3.1.1 Input Filters ...................................................................................... 32 9.3.1.2 High-Pass Filter ............................................................................... 33 9.3.1.3 Automatic Level Control .................................................................. 35 9.3.1.4 Input Dynamic Range Extension ..................................................... 36 9.3.1.5 Automatic Level Control and Input Dynamic Range Extension Calibration........................................................................................ 37 9.3.1.6 Level Detection ................................................................................ 37 9.3.2 Sidetone Processing............................................................................................ 37 9.3.3 Tone Generator ................................................................................................... 40 9.3.4 The tone generator can also be used to produce an S-ramp by setting swg_sel to 0x03. System Controller .................................................................... 40 9.3.5 Output Processing ............................................................................................... 41 9.3.5.1 Output Filters ................................................................................... 41 9.3.5.2 High-Pass Filter ............................................................................... 41 9.3.5.3 5-Band Equalizer ............................................................................. 43 9.3.5.4 5-Stage Biquad Filter ....................................................................... 45 9.3.5.5 Output Dynamic Range Extension .................................................. 48 9.3.5.6 DAC Noise Gate .............................................................................. 48 9.3.5.7 Digital Mixer ..................................................................................... 49 9.3.5.8 Digital Gain ...................................................................................... 52 9.4 Output Paths ....................................................................................................................... 53 |
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Similar Description - DA7217-00U36 |
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