DA7212 datasheet(2/136 Pages) RENESAS

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DA7212

Ultra-Low Power Stereo Codec

Datasheet

Revision 3.5

05-Jan-2022

CFR0011-120-00

2 of 135

Contents

General description ............................................................................................................................. 1

Key features ......................................................................................................................................... 1

Applications ......................................................................................................................................... 1

Contents ............................................................................................................................................... 2

Figures.................................................................................................................................................. 4

Tables ................................................................................................................................................... 5

Terms and definitions ................................................................................................................... 7

Block diagram................................................................................................................................ 8

Pinout ............................................................................................................................................. 9

Absolute maximum ratings ........................................................................................................ 11

Recommended operating conditions ........................................................................................ 11

Electrical characteristics ............................................................................................................ 12

Parametric specifications........................................................................................................... 13

Digital signal processing............................................................................................................ 16

Audio outputs .............................................................................................................................. 18

10 Clock generation ......................................................................................................................... 22

11 Phase locked loop (PLL)............................................................................................................. 22

12 Digital interfaces ......................................................................................................................... 23

12.1 Codec start-up time............................................................................................................. 26

13 Functional description ................................................................................................................ 28

13.1 General description ............................................................................................................. 28

13.2 Input signal chain ................................................................................................................ 29

13.3 Microphone inputs ............................................................................................................... 30

13.4 Digital microphones............................................................................................................. 30

13.5 Auxiliary inputs .................................................................................................................... 31

13.6 Input mixers......................................................................................................................... 32

13.7 Stereo audio ADC ............................................................................................................... 32

13.8 Automatic level control (ALC) ............................................................................................. 33

13.9 Beep generator and controller ............................................................................................ 35

13.10 Output signal chain ............................................................................................................. 36

13.11 Stereo audio DAC ............................................................................................................... 36

13.12 Output mixer........................................................................................................................ 37

13.13 Headphone amplifier ........................................................................................................... 37

13.14 Speaker amplifier ................................................................................................................ 38

13.15 Charge pump control........................................................................................................... 38

13.16 Charge pump clock control ................................................................................................. 40

13.17 Boosting the charge pump using demand feedback control ............................................... 41

13.17.1

Tracking the demands on the charge pump output ............................................. 41

13.17.1.1

CP_MCHANGE = 00 (manual mode) .............................................. 41

13.17.1.2

CP_MCHANGE = 01 (tracking the PGA gain setting) ..................... 41

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