User Manual
Table Of Contents
- 1. Pin Descriptions
- 2. Typical Connection Diagram
- 3. Characteristic and Specifications
- Recommended Operating Conditions
- Absolute Maximum Ratings
- Analog Input Characteristics
- ADC Digital Filter Characteristics
- Analog Output Characteristics
- Analog Passthrough Characteristics
- PWM Output Characteristics
- Headphone Output Power Characteristics
- Line Output Voltage Level Characteristics
- Combined DAC Interpolation and onChip Analog FIlter Response
- Switching Specifications - Serial Port
- Switching Specifications - I²C Control Port
- DC Electrical Characteristics
- Digital Interface Specifications and Characteristics
- Power Consumption
- 4. Applications
- 4.1 Overview
- 4.2 Analog Inputs
- 4.3 Analog Outputs
- 4.4 Analog In to Analog Out Passthrough
- 4.5 PWM Outputs
- 4.6 Serial Port Clocking
- 4.7 Digital Interface Formats
- 4.8 Initialization
- 4.9 Recommended Power-up Sequence
- 4.10 Recommended Power-Down Sequence
- 4.11 Required Initialization Settings
- 4.12 Control Port Operation
- 5. Register Quick Reference
- 6. Register Description
- 6.1 Chip I.D. and Revision Register (Address 01h) (Read Only)
- 6.2 Power Control 1 (Address 02h)
- 6.3 Power Control 2 (Address 03h)
- 6.4 Power Control 3 (Address 04h)
- 6.5 Clocking Control (Address 05h)
- 6.6 Interface Control 1 (Address 06h)
- 6.7 Interface Control 2 (Address 07h)
- 6.8 Input x Select: ADCA and PGAA (Address 08h), ADCB and PGAB (Address 09h)
- 6.9 Analog and HPF Control (Address 0Ah)
- 6.10 ADC HPF Corner Frequency (Address 0Bh)
- 6.11 Misc. ADC Control (Address 0Ch)
- 6.12 Playback Control 1 (Address 0Dh)
- 6.13 Miscellaneous Controls (Address 0Eh)
- 6.14 Playback Control 2 (Address 0Fh)
- 6.15 MICx Amp Control:MIC A (Address 10h) and MIC B (Address 11h)
- 6.16 PGAx Vol. and ALCx Transition Ctl.: ALC, PGA A (Address 12h) and ALC, PGA B (Address 13h)
- 6.17 Passthrough x Volume: PASSAVOL (Address 14h) and PASSBVOL (Address 15h)
- 6.18 ADCx Volume Control: ADCAVOL (Address 16h) and ADCBVOL (Address 17h)
- 6.19 ADCx Mixer Volume: ADCA (Address 18h) and ADCB (Address 19h)
- 6.20 PCMx Mixer Volume: PCMA (Address 1Ah) and PCMB (Address 1Bh)
- 6.21 Beep Frequency and On Time (Address 1Ch)
- 6.22 Beep Volume and Off Time (Address 1Dh)
- 6.23 Beep and Tone Configuration (Address 1Eh)
- 6.24 Tone Control (Address 1Fh)
- 6.25 Master Volume Control: MSTA (Address 20h) and MSTB (Address 21h)
- 6.26 Headphone Volume Control: HPA (Address 22h) and HPB (Address 23h)
- 6.27 Speaker Volume Control: SPKA (Address 24h) and SPKB (Address 25h)
- 6.28 ADC and PCM Channel Mixer (Address 26h)
- 6.29 Limiter Control 1, Min/Max Thresholds (Address 27h)
- 6.30 Limiter Control 2, Release Rate (Address 28h)
- 6.31 Limiter Attack Rate (Address 29h)
- 6.32 ALC Enable and Attack Rate (Address 2Ah)
- 6.33 ALC Release Rate (Address 2Bh)
- 6.34 ALC Threshold (Address 2Ch)
- 6.35 Noise Gate Control (Address 2Dh)
- 6.36 Status (Address 2Eh) (Read Only)
- 6.37 Battery Compensation (Address 2Fh)
- 6.38 VP Battery Level (Address 30h) (Read Only)
- 6.39 Speaker Status (Address 31h) (Read Only)
- 6.40 Charge Pump Frequency (Address 34h)
- 7. Analog Performance Plots
- 8. Example System Clock Frequencies
- 9. PCB Layout Considerations
- 10. ADC and DAC Digital Filters
- 11. Parameter Definitions
- 12. Package Dimensions
- 13. Ordering Information
- 14. References
- 15. Revision History

DS680F2 5
CS42L52
3/1/13
6.12 Playback Control 1 (Address 0Dh) ............................................................................................... 51
6.12.1 Headphone Analog Gain ..................................................................................................... 51
6.12.2 Playback Volume Setting B=A ............................................................................................ 51
6.12.3 Invert PCM Signal Polarity .................................................................................................. 52
6.12.4 Master Playback Mute ......................................................................................................... 52
6.13 Miscellaneous Controls (Address 0Eh) ........................................................................................ 52
6.13.1 Passthrough Analog ............................................................................................................ 52
6.13.2 Passthrough Mute ............................................................................................................... 52
6.13.3 Freeze Registers ................................................................................................................. 52
6.13.4 HP/Speaker De-emphasis ................................................................................................... 53
6.13.5 Digital Soft Ramp ................................................................................................................ 53
6.13.6 Digital Zero Cross ................................................................................................................ 53
6.14 Playback Control 2 (Address 0Fh) ................................................................................................ 54
6.14.1 Headphone Mute ................................................................................................................. 54
6.14.2 Speaker Mute ...................................................................................................................... 54
6.14.3 Speaker Volume Setting B=A ..............................................................................................54
6.14.4 Speaker Channel Swap ....................................................................................................... 54
6.14.5 Speaker MONO Control ...................................................................................................... 54
6.14.6 Speaker Mute 50/50 Control ............................................................................................... 54
6.15 MICx Amp Control:MIC A (Address 10h) and MIC B (Address 11h) ............................................ 55
6.15.1 MIC x Select ........................................................................................................................ 55
6.15.2 MICx Configuration .............................................................................................................. 55
6.15.3 MICx Gain ........................................................................................................................... 55
6.16 PGAx Vol. and ALCx Transition Ctl.:
ALC, PGA A (Address 12h) and ALC, PGA B (Address 13h) .............................................................. 55
6.16.1 ALCx Soft Ramp Disable ..................................................................................................... 55
6.16.2 ALCx Zero Cross Disable .................................................................................................... 56
6.16.3 PGAx Volume ...................................................................................................................... 56
6.17 Passthrough x Volume: PASSAVOL (Address 14h) and PASSBVOL (Address 15h) ................. 57
6.17.1 Passthrough x Volume ........................................................................................................ 57
6.18 ADCx Volume Control: ADCAVOL (Address 16h) and ADCBVOL (Address 17h) ....................... 57
6.18.1 ADCx Volume ...................................................................................................................... 57
6.19 ADCx Mixer Volume: ADCA (Address 18h) and ADCB (Address 19h) ........................................ 58
6.19.1 ADC Mixer Channel x Mute ................................................................................................. 58
6.19.2 ADC Mixer Channel x Volume ............................................................................................. 58
6.20 PCMx Mixer Volume: PCMA (Address 1Ah) and PCMB (Address 1Bh) ...................................... 58
6.20.1 PCM Mixer Channel x Mute ................................................................................................58
6.20.2 PCM Mixer Channel x Volume ............................................................................................ 58
6.21 Beep Frequency and On Time (Address 1Ch) ............................................................................. 59
6.21.1 Beep Frequency .................................................................................................................. 59
6.21.2 Beep On Time ..................................................................................................................... 60
6.22 Beep Volume and Off Time (Address 1Dh) .................................................................................. 60
6.22.1 Beep Off Time ..................................................................................................................... 60
6.22.2 Beep Volume ....................................................................................................................... 61
6.23 Beep and Tone Configuration (Address 1Eh) ............................................................................... 61
6.23.1 Beep Configuration .............................................................................................................. 61
6.23.2 Beep Mix Disable ................................................................................................................ 61
6.23.3 Treble Corner Frequency .................................................................................................... 62
6.23.4 Bass Corner Frequency ...................................................................................................... 62
6.23.5 Tone Control Enable ........................................................................................................... 62
6.24 Tone Control (Address 1Fh) ......................................................................................................... 62
6.24.1 Treble Gain .......................................................................................................................... 62
6.24.2 Bass Gain ............................................................................................................................ 63
6.25 Master Volume Control: MSTA (Address 20h) and MSTB (Address 21h) .................................... 63