Cirrus Logic CS42L52 manuals

Cirrus logic CS42L52 User Manual (82 pages)

Brand: Cirrus-logic | Category: Hardware | Size: 3.20 MB |

English

Table of contents

Stereo CODEC

1

Stereo Headphone Amplifier

1

System Features

2

™ Control Port Operation

2

Applications

2

General Description

2

TABLE OF CONTENTS

3

LIST OF TABLES

7

LIST OF FIGURES

7

1. PIN DESCRIPTIONS

8

DS680F2 9

9

1.1 I/O Pin Characteristics

10

2. TYPICAL CONNECTION DIAGRAM

11

ABSOLUTE MAXIMUM RATINGS

12

DS680F2 13

13

VA = 2.5V VA = 1.8V

13

14 DS680F2

14

PWM OUTPUT CHARACTERISTICS

17

0.022 F

18

Repeated

21

(Note 18)

22

(Note 23)

23

4. APPLICATIONS

24

4.2 Analog Inputs

25

4.2.1 MIC Inputs

26

4.2.3 Noise Gate

27

4.3 Analog Outputs

28

4.3.1 Beep Generator

29

4.3.2 Limiter

30

RRATE[5:0]ARATE[5:0]

31

4.5 PWM Outputs

32

4.5.2 VP Battery Compensation

33

4.6 Serial Port Clocking

33

34 DS680F2

34

4.7.1 DSP Mode

35

4.8 Initialization

36

4.12 Control Port Operation

38

4.12.1 I²C Control

38

4.12.2.1 Map Increment (INCR)

39

5. REGISTER QUICK REFERENCE

40

DS680F2 41

41

6. REGISTER DESCRIPTION

42

6.4.1 Headphone Power Control

44

6.4.2 Speaker Power Control

44

6.5.1 Auto-Detect

44

6.5.2 Speed Mode

45

6.5.3 32kHz Sample Rate Group

45

6.5.4 27 MHz Video Clock

45

(Examples)

49

50 DS680F2

50

INV_ADCx ADC Signal Polarity

51

ADCxMUTE ADC Mute

51

INV_PCMx PCM Signal Polarity

52

MSTxMUTE Master Mute

52

PASSxMUTE Passthrough Mute

52

FREEZE Control Port Status

52

6.13.4 HP/Speaker De-emphasis

53

6.13.5 Digital Soft Ramp

53

6.13.6 Digital Zero Cross

53

DS680F2 55

55

6.16.3 PGAx Volume

56

6.17.1 Passthrough x Volume

57

6.18.1 ADCx Volume

57

58 DS680F2

58

6.21.1 Beep Frequency

59

6.21.2 Beep On Time

60

6.22.1 Beep Off Time

60

6.22.2 Beep Volume

61

6.23.1 Beep Configuration

61

6.23.2 Beep Mix Disable

61

62 DS680F2

62

6.24.2 Bass Gain

63

6.25.1 Master Volume Control

63

6.28.1 PCM Mix Channel Swap

64

6.28.2 ADC Mix Channel Swap

64

6.33.1 ALC Release Rate

68

6.34.1 ALC Maximum Threshold

68

6.37.3 VP Reference

72

6.40.1 Charge Pump Frequency

73

7. ANALOG PERFORMANCE PLOTS

74

8.1 Auto Detect Enabled

76

8.2 Auto Detect Disabled

76

9. PCB LAYOUT CONSIDERATIONS

77

78 DS680F2

78

11.PARAMETER DEFINITIONS

79

12.PACKAGE DIMENSIONS

80

THERMAL CHARACTERISTICS

80

13.ORDERING INFORMATION

81

14.REFERENCES

81

15.REVISION HISTORY

81

82 DS680F2

82

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