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ALC5631Q

C +I

S Audio Codec

Stereo Class-D Amp

Cap-Free Headphone Amp

Datasheet

Rev. 0.9

Realtek Semiconductor Corp.

No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan

Tel.: +886-3-578-0211. Fax: +886-3-577-6047

www.realtek.com

ALC5631Q

Datasheet

S Audio Codec + Class-D Amp + Cap-Free HP

Rev. 0.9

Table of Contents

1. GENERAL DESCRIPTION..............................................................................................................................................1

2. FEATURES.........................................................................................................................................................................1

3. SYSTEM APPLICATION.................................................................................................................................................2

4. FUNCTION BLOCK AND MIXER PATH .....................................................................................................................2

4.1. FUNCTION BLOCK ........................................................................................................................................................2

4.2. AUDIO MIXER PATH.....................................................................................................................................................3

5. PIN ASSIGNMENTS .........................................................................................................................................................4

5.1. GREEN PACKAGE AND VERSION IDENTIFICATION ........................................................................................................4

6. PIN DESCRIPTIONS.........................................................................................................................................................5

6.1. DIGITAL I/O PINS.........................................................................................................................................................5

6.2. ANALOG I/O PINS ........................................................................................................................................................6

6.3. FILTER/REFERENCE......................................................................................................................................................7

6.4. POWER/GROUND..........................................................................................................................................................7

7. FUNCTION DESCRIPTION ............................................................................................................................................8

7.1. POWER .........................................................................................................................................................................8

7.2. RESET ..........................................................................................................................................................................8

7.2.1. Power-On Reset (POR) ..........................................................................................................................................9

7.2.2. H/W Reset...............................................................................................................................................................9

7.2.3. Software Reset........................................................................................................................................................9

7.3. CLOCKING....................................................................................................................................................................9

7.3.1. Phase-Locked Loop..............................................................................................................................................10

7.3.2. I

C and Stereo I

S.................................................................................................................................................10

7.4. DIGITAL DATA INTERFACE ........................................................................................................................................11

7.4.1. Stereo I

S/PCM Interface .....................................................................................................................................11

7.5. AUDIO DATA PATH ....................................................................................................................................................14

7.5.1. Stereo ADC...........................................................................................................................................................14

7.5.2. Stereo DAC...........................................................................................................................................................14

7.5.3. Mixers...................................................................................................................................................................14

7.6. ANALOG AUDIO INPUT PATH .....................................................................................................................................15

7.7. ANALOG AUDIO OUTPUT PATH..................................................................................................................................16

7.8. ALC FUNCTION .........................................................................................................................................................17

7.9. SPEAKER AMPLIFIER RATIO GAIN..............................................................................................................................20

7.10. HARDWARE SOUND PROCESSING...............................................................................................................................21

7.10.1. Equalizer Block................................................................................................................................................21

7.10.2. Pseudo Stereo and Spatial 3D Sound ..............................................................................................................21

7.10.3. Wind Noise Reduction Filter............................................................................................................................21

7.11. I

C CONTROL INTERFACE ..........................................................................................................................................22

7.11.1. Address Setting ................................................................................................................................................22

7.11.2. Complete Data Transfer ..................................................................................................................................22

7.11.3. Odd-Addressed Register Access ......................................................................................................................23

7.12. GPIO, INTERRUPT AND JACK DETECTION ..................................................................................................................23

7.13. POWER MANAGEMENT...............................................................................................................................................25

8. REGISTERS LIST ...........................................................................................................................................................26

8.1. REG-00H: RESET........................................................................................................................................................26

ALC5631Q

Datasheet

S Audio Codec + Class-D Amp + Cap-Free HP

Rev. 0.9

8.2. REG-02H: SPEAKER OUTPUT CONTROL .....................................................................................................................26

8.3. REG-04H: HEADPHONE OUTPUT CONTROL ................................................................................................................27

8.4. REG-06H: OUTPUT CONTROL FOR AXO1/AXO2/MONOOUT .................................................................................28

8.5. REG-0AH: AUX INPUT VOLUME CONTROL .............................................................................................................29

8.6. REG-0CH: STEREO DAC CONTROL 1 ......................................................................................................................29

8.7. REG-0EH: MICROPHONE INPUT CONTROL .................................................................................................................30

8.8. REG-10H: STEREO DAC CONTROL 2.......................................................................................................................30

8.9. REG-12H: STEREO ADC CONTROL 1..........................................................................................................................30

8.10. REG-14H: ADC RECORDING MIXER CONTROL..........................................................................................................31

8.11. REG-16H: STEREO ADC CONTROL 2..........................................................................................................................32

8.12. REG-1AH: LEFT OUTPUT MIXER (OUTMIXL) CONTROL..........................................................................................32

8.13. REG-1CH: RIGHT OUTPUT MIXER (OUTMIXR) MIXER CONTROL............................................................................33

8.14. REG-1EH: AXO1MIX CONTROL ...............................................................................................................................33

8.15. REG-20H: AXO2MIX CONTROL................................................................................................................................35

8.16. REG-22H: MICROPHONE INPUT CONTROL..................................................................................................................36

8.17. REG-24H: DIGITAL MICROPHONE CONTROL ..............................................................................................................37

8.18. REG-26H: MONOIN INPUT VOLUME.........................................................................................................................38

8.19. REG-28H: SPEAKER MIXER CONTROL........................................................................................................................38

8.20. REG-2AH: SPEAKER/MONO OUTPUT CONTROL .........................................................................................................39

8.21. REG-2CH: SPEAKER/MONO/HP OUTPUT CONTROL ...................................................................................................41

8.22. REG-34H: STEREO I

S SERIAL DATA PORT CONTROL................................................................................................42

8.23. REG-38H: STEREO ADC/DAC CLOCK CONTROL.......................................................................................................43

8.24. REG-3AH: POWER MANAGEMENT 1...........................................................................................................................44

8.25. REG-3BH: POWER MANAGEMENT 2...........................................................................................................................45

8.26. REG-3CH: POWER MANAGEMENT 3...........................................................................................................................46

8.27. REG-3EH: POWER MANAGEMENT 4...........................................................................................................................47

8.28. REG-40H: GENERAL PURPOSE CONTROL REGISTER...................................................................................................48

8.29. REG-42H: GLOBAL CLOCK CONTROL ........................................................................................................................49

8.30. REG-44H: PLL CONTROL...........................................................................................................................................49

8.30.1. PLL Clock Setting Table for 48K: (Unit: MHz)...............................................................................................50

8.30.2. PLL Clock Setting Table for 44.1K: (Unit: MHz)............................................................................................50

8.31. REG-48H: INTERNAL STATUS AND IRQ CONTROL 1 ..................................................................................................50

8.32. REG-4AH: INTERNAL STATUS AND IRQ CONTROL 2..................................................................................................51

8.33. REG-4CH: GPIO CONTROL........................................................................................................................................51

8.34. REG-52H: MISC. CONTROL .......................................................................................................................................52

8.35. REG-56H: DE-POP FUNCTION CONTROL ...................................................................................................................54

8.36. REG-5AH: JACK DETECTION CONTROL......................................................................................................................55

8.37. REG-5CH: SOFT VOLUME CONTROL ..........................................................................................................................57

8.38. REG-64H: ALC CONTROL 1 .......................................................................................................................................58

8.39. REG-65H: ALC CONTROL 2 .......................................................................................................................................59

8.40. REG-66H: ALC CONTROL 3 .......................................................................................................................................59

8.41. REG-68H: PSEUDO STEREO AND SPATIAL EFFECT CONTROL .....................................................................................60

8.42. REG-6AH: INDEX ADDRESS .......................................................................................................................................61

8.43. REG-6CH: INDEX DATA .............................................................................................................................................61

8.44. REG-6EH: EQ CONTROL 1 .........................................................................................................................................61

8.45. INDEX-00H: EQ LOW PASS FILTER COEFFICIENT (LPF: A1) ......................................................................................63

8.46. INDEX-01H: EQ LOW PASS FILTER GAIN (LPF: HO)..................................................................................................63