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 57
CS42L52
3/1/13
6.17 Passthrough x Volume: PASSAVOL (Address 14h) and PASSBVOL (Address 15h)
6.17.1 Passthrough x Volume
Sets the volume/gain of the signal routed from the PGA to the headphone/line output.
Notes:
1. This register is ignored when the PASSTHRUx bit (“Passthrough Analog” on page 52) is disabled.
2. The step size may deviate from 0.5 dB at settings below -40 dB. Code settings 0x95, 0xA1, 0xAD,
and 0xB9 are not guaranteed to be monotonic.
6.18 ADCx Volume Control: ADCAVOL (Address 16h) and ADCBVOL (Address 17h)
6.18.1 ADCx Volume
Sets the volume of the ADC signal out the serial data output (SDOUT).
76543210
PASSxVOL7 PASSxVOL6 PASSxVOL5 PASSxVOL4 PASSxVOL3 PASSxVOL2 PASSxVOL1 PASSxVOL0
PASSxVOL[7:0] Gain
0111 1111 12 dB
... ...
0001 1000 12 dB
... ...
0000 0001 +0.5 dB
0000 0000 0 dB
11111 1111 -0.5 dB
... ...
1000 1000 -60.0 dB
... ...
1000 0000 -60.0 dB
Step Size: 0.5 dB (approximate)
Application: “Analog In to Analog Out Passthrough” on page 31
76543210
ADCAVOL7 ADCAVOL6 ADCAVOL5 ADCAVOL4 ADCAVOL3 ADCAVOL2 ADCAVOL1 ADCAVOL0
ADCxVOL[7:0] Volume
0111 1111 24 dB
... ...
0001 1000 24 dB
... ...
0000 0000 0 dB
1111 1111 -1.0 dB
1111 1110 -2.0 dB
... ...
1010 0000 -96.0 dB
... ...
1000 0000 -96.0 dB
Step Size: 1.0 dB