DA7219 datasheet(3/123 Pages) DIALOG

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DA7219

Audio codec with Advanced Accessory Detect

Company confidential

Datasheet

Revision 2.1

17-Dec-2015

3 of 123

Contents

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

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

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

System diagram ................................................................................................................................... 2

Contents ............................................................................................................................................... 3

Terms and definitions ................................................................................................................... 6

References ..................................................................................................................................... 6

Block diagram................................................................................................................................ 7

Pinout ............................................................................................................................................. 8

4.1

Microphone pins .................................................................................................................. 10

4.2

Accessory detect pins ......................................................................................................... 10

4.3

Interface input pins.............................................................................................................. 10

4.4

Interface output pins............................................................................................................ 11

4.5

Interface bidirectional pins .................................................................................................. 11

4.6

Headphone output pins ....................................................................................................... 11

4.7

Charge pump pins ............................................................................................................... 11

4.8

References .......................................................................................................................... 12

4.9

Supply pins.......................................................................................................................... 12

4.10 Ground pins......................................................................................................................... 12

Absolute maximum ratings ........................................................................................................ 13

Recommended operating conditions ........................................................................................ 13

Electrical characteristics ............................................................................................................ 14

Timing characteristics ................................................................................................................ 18

Functional description ................................................................................................................ 21

9.1

Device operating modes ..................................................................................................... 21

9.2

Input paths .......................................................................................................................... 23

9.2.1

Microphone input ................................................................................................. 23

9.2.1.1

Microphone bias .............................................................................. 23

9.2.1.2

Microphone amplifier ....................................................................... 24

9.2.1.3

Input amplifiers ................................................................................ 24

9.2.2

Analogue to Digital Converter (ADC)................................................................... 25

9.3

Digital engine ...................................................................................................................... 26

9.3.1

Input processing .................................................................................................. 27

9.3.1.1

ADC digital gain ............................................................................... 27

9.3.1.2

High-pass filter................................................................................. 27

9.3.1.3

Automatic Level Control (ALC) ........................................................ 28

9.3.2

Sidetone processing ............................................................................................ 29

9.3.3

Tone generator .................................................................................................... 30

9.3.4

Digital router ........................................................................................................ 31

9.3.5

System controller ................................................................................................. 31

9.3.6

Output processing................................................................................................ 32

9.3.6.1

DAC digital gain ............................................................................... 32

9.3.6.2

High-pass filter................................................................................. 32

DA7219 Datasheet(PDF) 3 Page - Dialog Semiconductor

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