LM4935 datasheet(4/112 Pages) NSC

4 / 112 page

Table of Contents

1.0 General Description ..................................................................................................................................... 1

2.0 Applications .................................................................................................................................................. 1

3.0 Key Specifications ........................................................................................................................................ 1

4.0 Features ....................................................................................................................................................... 1

5.0 LM4935 Overview ........................................................................................................................................ 2

6.0 Typical Application ........................................................................................................................................ 3

7.0 Connection Diagrams ................................................................................................................................... 6

7.1 PIN TYPE DEFINITIONS .......................................................................................................................... 7

8.0 Absolute Maximum Ratings

........................................................................................................................ 8

9.0 Operating Ratings ........................................................................................................................................ 8

10.0 Electrical Characteristics ........................................................................................................................... 8

11.0 System Control ......................................................................................................................................... 16

11.1 I

2C SIGNALS ......................................................................................................................................... 16

11.2 I

2C DATA VALIDITY ............................................................................................................................... 16

11.3 I

2C START AND STOP CONDITIONS .................................................................................................. 16

11.4 TRANSFERRING DATA ........................................................................................................................ 16

11.5 I

2C TIMING PARAMETERS

................................................................................................................. 18

12.0 Status & Control Registers ...................................................................................................................... 20

12.1 BASIC CONFIGURATION REGISTER ................................................................................................. 21

12.2 CLOCKS CONFIGURATION REGISTER ............................................................................................. 22

12.3 LM4935 CLOCK NETWORK ................................................................................................................ 23

12.4 COMMON CLOCK SETTINGS FOR THE DAC & ADC ....................................................................... 24

12.5 PLL M DIVIDER CONFIGURATION REGISTER .................................................................................. 25

12.6 PLL N DIVIDER CONFIGURATION REGISTER .................................................................................. 26

12.7 PLL P DIVIDER CONFIGURATION REGISTER .................................................................................. 27

12.8 PLL N MODULUS CONFIGURATION REGISTER ............................................................................... 28

12.9 FURTHER NOTES ON PLL PROGRAMMING ..................................................................................... 29

12.10 ADC_1 CONFIGURATION REGISTER ............................................................................................... 31

12.11 ADC_2 CONFIGURATION REGISTER ............................................................................................... 32

12.12 AGC_1 CONFIGURATION REGISTER

............................................................................................. 33

12.13 AGC_2 CONFIGURATION REGISTER

............................................................................................. 34

12.14 AGC_3 CONFIGURATION REGISTER

............................................................................................. 35

12.15 AGC OVERVIEW ................................................................................................................................. 36

12.16 MIC_1 CONFIGURATION REGISTER ............................................................................................... 37

12.17 MIC_2 CONFIGURATION REGISTER ............................................................................................... 38

12.18 SIDETONE ATTENUATION REGISTER ............................................................................................. 39

12.19 CP_INPUT CONFIGURATION REGISTER ........................................................................................ 40

12.20 AUX_LEFT CONFIGURATION REGISTER ........................................................................................ 41

12.21 AUX_RIGHT CONFIGURATION REGISTER ...................................................................................... 42

12.22 DAC CONFIGURATION REGISTER .................................................................................................. 43

12.23 CP_OUTPUT CONFIGURATION REGISTER .................................................................................... 44

12.24 AUX_OUTPUT CONFIGURATION REGISTER .................................................................................. 45

12.25 LS_OUTPUT CONFIGURATION REGISTER ..................................................................................... 46

12.26 HP_OUTPUT CONFIGURATION REGISTER .................................................................................... 47

12.27 EP_OUTPUT CONFIGURATION REGISTER .................................................................................... 48

12.28 DETECT CONFIGURATION REGISTER ............................................................................................ 49

12.29 HEADSET DETECT OVERVIEW ........................................................................................................ 50

12.30 STATUS REGISTER ........................................................................................................................... 53

12.31 AUDIO INTERFACE CONFIGURATION REGISTER ......................................................................... 54

12.32 DIGITAL AUDIO DATA FORMATS ...................................................................................................... 55

12.33 GPIO CONFIGURATION REGISTER ................................................................................................. 56

12.34 SAR CHANNELS0&1 CONFIGURATION REGISTER .................................................................... 57

12.35 SAR CHANNELS2&3 CONFIGURATION REGISTER .................................................................... 58

12.36 SAR DATA 0 TO 3 REGISTERS ......................................................................................................... 59

12.37 SAR OVERVIEW ................................................................................................................................. 60

12.38 DC VOLUME CONFIGURATION REGISTER .................................................................................... 62

12.39 SAR TRIGGER 1 CONFIGURATION REGISTER .............................................................................. 63

12.40 SAR TRIGGER 1 MSBs CONFIGURATION REGISTER ................................................................... 64

12.41 SAR TRIGGER 2 CONFIGURATION REGISTER .............................................................................. 65

12.42 SAR TRIGGER 2 MSBs CONFIGURATION REGISTER ................................................................... 66

12.43 DEBUG REGISTER

........................................................................................................................... 67

13.0 Typical Performance Characteristics ....................................................................................................... 68

LM4935 Datasheet(PDF) 4 Page - National Semiconductor (TI)

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