DA7212 datasheet(2/136 Pages) RENESAS

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Ultra-Low Power Stereo Codec

DA7212 Revision 3.6

Nov 1, 2024

CFR011-120-00

Page 2

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 ....................................................................................................... 12

Electrical Characteristics............................................................................................................................ 13

Parametric Specifications........................................................................................................................... 14

Digital Signal Processing............................................................................................................................ 16

Audio Outputs .............................................................................................................................................. 18

10. Clock Generation ......................................................................................................................................... 22

11. Phase Locked Loop..................................................................................................................................... 23

12. Digital Interfaces .......................................................................................................................................... 24

12.1 Codec Start-up Time............................................................................................................................ 27

13. Functional Description................................................................................................................................ 28

13.1 General Description ............................................................................................................................. 28

13.2 Input Signal Chain ............................................................................................................................... 29

13.3 Microphone Inputs ............................................................................................................................... 30

13.4 Digital Microphones ............................................................................................................................. 31

13.5 Auxiliary Inputs .................................................................................................................................... 32

13.6 Input Mixers ......................................................................................................................................... 32

13.7 Stereo Audio ADC ............................................................................................................................... 33

13.8 Automatic Level Control ...................................................................................................................... 34

13.9 Beep Generator and Controller ........................................................................................................... 36

13.10 Output Signal Chain............................................................................................................................. 37

13.11 Stereo Audio DAC ............................................................................................................................... 38

13.12 Output Mixer ........................................................................................................................................ 39

13.13 Headphone Amplifier ........................................................................................................................... 39

13.14 Speaker Amplifier ................................................................................................................................ 40

13.15 Charge Pump Control .......................................................................................................................... 41

13.16 Charge Pump Clock Control ................................................................................................................ 43

13.17 Boosting The Charge Pump Using Demand Feedback Control.......................................................... 44

13.17.1 Tracking The Demands On The Charge Pump Output ........................................................ 44

13.17.1.1

CP_MCHANGE = 00 (Manual Mode) ................................................................ 44

13.17.1.2

CP_MCHANGE = 01 (Tracking the PGA Gain Setting) .................................... 44

13.17.1.3

CP_MCHANGE = 10 (Tracking the DAC Signal Setting) .................................. 44

13.17.1.4

CP_MCHANGE = 11 (Tracking the Output Signal Magnitude) ......................... 44

13.17.2 Specifying Clock Frequencies when Tracking the Charge Pump Output Demand .............. 44

13.17.3 Controlling the Boost Of the Charge Pump Clock-Frequency .............................................. 44

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