lm4935rlx National Semiconductor Corporation, lm4935rlx Datasheet - Page 4

• Manufacturer Part Number: lm4935rlx
• Description: Audio Sub-system With Dual-mode Stereo Headphone And Mono High Efficiency Loudspeaker Amplifiers And Multi-purpose Adc
• Manufacturer: National Semiconductor Corporation

www.national.com
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
8.0 Absolute Maximum Ratings
9.0 Operating Ratings ........................................................................................................................................ 9
10.0 Electrical Characteristics ........................................................................................................................... 9
11.0 System Control ......................................................................................................................................... 17
12.0 Status & Control Registers ...................................................................................................................... 21
13.0 Typical Performance Characteristics ....................................................................................................... 69
7.1 PIN TYPE DEFINITIONS .......................................................................................................................... 8
11.1 I
11.2 I
11.3 I
11.4 TRANSFERRING DATA ........................................................................................................................ 17
11.5 I
12.1 BASIC CONFIGURATION REGISTER ................................................................................................. 22
12.2 CLOCKS CONFIGURATION REGISTER ............................................................................................. 23
12.3 LM4935 CLOCK NETWORK ................................................................................................................ 24
12.4 COMMON CLOCK SETTINGS FOR THE DAC & ADC ....................................................................... 25
12.5 PLL M DIVIDER CONFIGURATION REGISTER .................................................................................. 26
12.6 PLL N DIVIDER CONFIGURATION REGISTER .................................................................................. 27
12.7 PLL P DIVIDER CONFIGURATION REGISTER .................................................................................. 28
12.8 PLL N MODULUS CONFIGURATION REGISTER ............................................................................... 29
12.9 FURTHER NOTES ON PLL PROGRAMMING ..................................................................................... 30
12.10 ADC_1 CONFIGURATION REGISTER ............................................................................................... 32
12.11 ADC_2 CONFIGURATION REGISTER ............................................................................................... 33
12.12 AGC_1 CONFIGURATION REGISTER
12.13 AGC_2 CONFIGURATION REGISTER
12.14 AGC_3 CONFIGURATION REGISTER
12.15 AGC OVERVIEW ................................................................................................................................. 37
12.16 MIC_1 CONFIGURATION REGISTER ............................................................................................... 38
12.17 MIC_2 CONFIGURATION REGISTER ............................................................................................... 39
12.18 SIDETONE ATTENUATION REGISTER ............................................................................................. 40
12.19 CP_INPUT CONFIGURATION REGISTER ........................................................................................ 41
12.20 AUX_LEFT CONFIGURATION REGISTER ........................................................................................ 42
12.21 AUX_RIGHT CONFIGURATION REGISTER ...................................................................................... 43
12.22 DAC CONFIGURATION REGISTER .................................................................................................. 44
12.23 CP_OUTPUT CONFIGURATION REGISTER .................................................................................... 45
12.24 AUX_OUTPUT CONFIGURATION REGISTER .................................................................................. 46
12.25 LS_OUTPUT CONFIGURATION REGISTER ..................................................................................... 47
12.26 HP_OUTPUT CONFIGURATION REGISTER .................................................................................... 48
12.27 EP_OUTPUT CONFIGURATION REGISTER .................................................................................... 49
12.28 DETECT CONFIGURATION REGISTER ............................................................................................ 50
12.29 HEADSET DETECT OVERVIEW ........................................................................................................ 51
12.30 STATUS REGISTER ........................................................................................................................... 54
12.31 AUDIO INTERFACE CONFIGURATION REGISTER ......................................................................... 55
12.32 DIGITAL AUDIO DATA FORMATS ...................................................................................................... 56
12.33 GPIO CONFIGURATION REGISTER ................................................................................................. 57
12.34 SAR CHANNELS 0 & 1 CONFIGURATION REGISTER .................................................................... 58
12.35 SAR CHANNELS 2 & 3 CONFIGURATION REGISTER .................................................................... 59
12.36 SAR DATA 0 TO 3 REGISTERS ......................................................................................................... 60
12.37 SAR OVERVIEW ................................................................................................................................. 61
12.38 DC VOLUME CONFIGURATION REGISTER .................................................................................... 63
12.39 SAR TRIGGER 1 CONFIGURATION REGISTER .............................................................................. 64
12.40 SAR TRIGGER 1 MSBs CONFIGURATION REGISTER ................................................................... 65
12.41 SAR TRIGGER 2 CONFIGURATION REGISTER .............................................................................. 66
12.42 SAR TRIGGER 2 MSBs CONFIGURATION REGISTER ................................................................... 67
12.43 DEBUG REGISTER ........................................................................................................................... 68
2
2
2
2
C SIGNALS ......................................................................................................................................... 17
C DATA VALIDITY ............................................................................................................................... 17
C START AND STOP CONDITIONS .................................................................................................. 17
C TIMING PARAMETERS
........................................................................................................................ 9
................................................................................................................. 19
Table of Contents
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