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 45
CS42L52
3/1/13
6.5.2 Speed Mode
Configures the speed mode of the CODEC in slave mode and sets the appropriate MCLK divide ratio for
LRCK and SCLK in master mode.
Notes:
1. Slave/Master Mode is determined by the M/S
bit in “Master/Slave Mode” on page 46.
2. Certain sample and MCLK frequencies require setting the SPEED[1:0] bits, the 32k_GROUP bit
(“32kHz Sample Rate Group” on page 45) and/or the VIDEOCLK bit (“27 MHz Video Clock” on
page 45) and RATIO[1:0] bits (“Internal MCLK/LRCK Ratio” on page 45). Low sample rates may also
affect dynamic range performance in the typical audio band. Refer to the referenced application for
more information.
3. These bits are ignored when the AUTO bit (“Auto-Detect” on page 44) is enabled.
6.5.3 32kHz Sample Rate Group
Specifies whether or not the input/output sample rate is 8 kHz, 16 kHz or 32 kHz.
6.5.4 27 MHz Video Clock
Specifies whether or not the external MCLK frequency is 27 MHz
6.5.5 Internal MCLK/LRCK Ratio
Configures the internal MCLK/LRCK ratio.
SPEED[1:0]
Slave Mode Master Mode
Serial Port Speed MCLK/LRCK Ratio SCLK/LRCK Ratio
00 Double-Speed Mode (DSM - 50 kHz -100 kHz Fs) 128 64
01 Single-Speed Mode (SSM - 4 kHz -50 kHz Fs) 256 64
10 Half-Speed Mode (HSM - 12.5kHz -25 kHz Fs) 512 64
11 Quarter-Speed Mode (QSM - 4 kHz -12.5 kHz Fs)
1024
64
Application: “Serial Port Clocking” on page 33
32kGROUP 8 kHz, 16 kHz or 32 kHz sample rate?
0 No
1Yes
Application: “Serial Port Clocking” on page 33
VIDEOCLK 27 MHz MCLK?
0 No
1Yes
Application: “Serial Port Clocking” on page 33
RATIO[1:0] Internal MCLK Cycles per LRCK SCLK/LRCK Ratio in Master Mode
00 128 64
01 125 62
10 132 66
11 136 68
Application: “Serial Port Clocking” on page 33