AP8306_技术文档

AP8306

SRS TruSurround XT Audio Processor

AP8306

SRS TruSurround XT Audio Processor

AP8306

SRS TruSurround XT Audio Processor

Table of Contents

1. OVERVIEW...............................................................................................................................1

2. APPLICATIONS .......................................................................................................................1

3. ORDERING INFORMATION.....................................................................................................1

4. FEATURES...............................................................................................................................1

5. BLOCK DIAGRAM ...................................................................................................................2

Overview ...........................................................................................................................................................2

TruSurround XT ................................................................................................................................................2

SRS-3D .............................................................................................................................................................3

LT / RT ..............................................................................................................................................................3

SRS 3D-MONO.................................................................................................................................................4

TRUBASS .........................................................................................................................................................4

6. PIN CONFIGURATION.............................................................................................................5

7. DEVICE PIN DESCRIPTIONS..................................................................................................6

SRS TruSurround XT + 5 BAND EQ configuration...........................................................................................6

SRS TruSurround XT + SRS PCT configuration..............................................................................................6

8. APPLICATION CIRCUITS........................................................................................................6

SRS TruSurround XT + 5 BAND EQ ................................................................................................................6

SRS TruSurround XT + SRS PCT....................................................................................................................6

9. APPLICATION NOTES.............................................................................................................6

10. ABSOLUTE MAXIMUM RATINGS...........................................................................................6

11. ELECTRICAL CHARACTERISTICS ........................................................................................6

12. EQUALIZER DESCRIPTION....................................................................................................6

13. I²C-BUS CONCEPTS................................................................................................................6

14. I²C-BUS PROTOCOL ...............................................................................................................6

15. SUB-ADDRESS BYTE .............................................................................................................6

16. POWER ON RESET CONDITION ............................................................................................6

17. DATA BYTE SPECIFICATION.................................................................................................6

SPK, HP, SUB-WOOFER MUTE, INPUT VOLUME (SUB-ADDRESS “XXXB0000”) .....................................6

POWERSAVE on/off, MODE SELECT, INPUT SELECT (SUB-ADDRESS “XXXB0001”)..............................6

ZEROCROSS, TB on/off, TSXT BYPASS, EQ on/off, DC, HP, PL (SUB-ADDRESS “XXXB0010”) ..............6

LEFT SPEAKER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0011”)...................................................6

RIGHT SPEAKER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0100”) ................................................6

LEFT HEADPHONE OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0101”).............................................6

RIGHT HEADPHONE OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0110”) ..........................................6

TRUBASS PUNCH LEVEL (SUB-ADDRESS “XXXB0111”)............................................................................6

DIALOG CLARITY LEVEL (SUB-ADDRESS “XXXB1000”).............................................................................6

SUB on/off, SUB INPUT, LPF on/off, PHASE, LPF SETTING (SUB-ADDRESS “XXXB1001”)......................6

SUB-WOOFER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB1010”).....................................................6

EQ BAND 1 LEVEL / SRS PCT HIGH-BAND LEVEL (SUB-ADDRESS “XXXB1011”) ...................................6

EQ BAND 2 LEVEL / SRS PCT MID-BAND LEVEL (SUB-ADDRESS “XXXB1100”)......................................6

EQ BAND 3 LEVEL (SUB-ADDRESS “XXXB1101”)........................................................................................6

EQ BAND 4 LEVEL (SUB-ADDRESS “XXXB1110”)........................................................................................6

EQ BAND 5 LEVEL (SUB-ADDRESS “XXXB1111”)........................................................................................6

18. PACKAGE INFORMATION......................................................................................................6

AP8306

SRS TruSurround XT Audio Processor

1. OVERVIEW

4. FEATURES

The AP8306 is a highly integrated single chip audio

enhancement processor based on SRS Labs’ patented

audio technologies. TruSurround XT is the combination

of SRS technologies, including TruSurround, Dialog

Clarity, TruBass and WOW.

SRS Technologies

n SRS TruSurround XT

n SRS TruSurround

n SRS WOW

n SRS TruBass

n SRS 3D

n SRS 3D Mono

n SRS Headphone

n SRS Dialog Clarity

n SRS PCT

TruSurround processes multi-channel audio source and

delivers a compelling, virtual surround sound experience

through any two speaker playback system, such as

internal television speakers and headphones. It is fully

compatible with all multi-channel formats up to 6.1

channels. It also supports Dolby Pro Logic, Dolby (AC-3),

DTS, THX and other multi-channel audio source. Dialog

Clarity improves the dialog intelligibility which originally

suffers due to competing signals from other speakers

and the film soundtrack mixed specifically for cinema

playback or loaded with the latest advancement in

special audio effects. TruBass significantly enhances the

bass performance. In addition, WOW is an award

Basic Chip Control Functions

n Support decoded signals from DTS 5.1/6.1,

Circle Surround 5.1/6.1, Dolby Digital 5.1/6.1

and Prologic I / Prologic II

n Input selector:

winning

stereo

enhancement

technology

that

- 14 inputs for MONO mode or

significantly improves the performance of stereo (non-

surround sound encoded material) signals through two-

speaker system, including headphones. It extends the

sound image in both the horizontal and vertical planes

well beyond the speakers themselves.

- 7 pairs of inputs for STEREO mode or

- 2 sets of 7 inputs for TruSurround XT mode

n Balance control for Left and Right channel

n 64-step digital output volume attenuator

n 32-step digital input volume control

n Independent mute function

The AP8306 has many additional features such as 14

input selectors, line out, digital Dialog Clarity level

control, input volume control, independent mute function

for speaker/headphone/subwoofer and built-in equalizer.

This chip is configured to fulfill different audio

enhancement requirements. The overall chip operation

can be controlled by external MCU through I²C bus

interface providing ease-of-use for audio system

integration.

n I²C bus interface

n 3 separate outputs: speaker out, headphone out

with volume control and line out

n Sub-woofer output

n 64-step volume control for sub-woofer output

n 16 steps for sub-woofer LPF cutoff frequency

n Digital Dialog Clarity level control (64 steps)

n Digital TruBass level control (64 steps)

n 5 Band EQ control in 1dB/step (31 steps per

band)

n SRS PCT High-Band control (16 steps)

n SRS PCT Mid-Band control (16 steps)

n Bandpass filter options for different speaker

size

2. APPLICATIONS

n

LCD TV

PDP TV

Rear Projection TV

HDTV

Digital TV

Set-Top-Box

2.1 DVD Receiver

n Built-in multi-channel decoder for LT/RT mode

n Individual Bypass mode for various functions

n Power save mode

3. ORDERING INFORMATION

n Built-in zerocross detector to prevent click noise

n Operating voltage: 3V to 5.5V

PART NUMBER

PINS

PACKAGE

n Operating temperature: -20^oC to 70^oC

AP8306-QF-L

100

PQFP

Revision 2.9

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AP8306

SRS TruSurround XT Audio Processor

5. BLOCK DIAGRAM

Overview

STEREO

2

SUB-WOOFER

SRS

PASSIVE

MATRIX

TRUSURROUND

SPEAKER

4

+

INPUT

SRS

MULTIPLEXER

PCT

MULTICHANNEL

SRS

DIALOG

CLARITY

LINEOUT

&

/

2

7

2

TRUBASS

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

SRS

MONO

PHONE

3D-MONO

1

2

TruSurround XT

STEREO

2

SRS

TRUSURROUND

PASSIVE

MATRIX

4

SPEAKER

+

INPUT

SRS

MULTIPLEXER

SRS

PCT

/

DIALOG

CLARITY

MULTICHANNEL

7

LINEOUT

SRS

&

2

TRUBASS

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

SRS

3D-MONO

MONO

PHONE

1

2

Inputs of AP8306 are multiplexed into 7 channels and volume is adjusted before passing to the SRS

TRUSURROUND block for TRUSURROUND, SRS HEADPHONE and DIALOG CLARITY processing. The mixed

stereo output will then enter the SRS TRUBASS block for bass enhancement and finally to the SRS PCT / 5-BAND

EQUALIZER block for further processing.

Revision 2.9

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June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

BLOCK DIAGRAM (continued)

SRS-3D

STEREO

2

SRS

TRUSURROUND

PASSIVE

MATRIX

4

SPEAKER

+

INPUT

SRS

DIALOG

CLARITY

MULTIPLEXER

SRS

PCT

/

MULTICHANNEL

7

LINEOUT

SRS

TRUBASS

&

2

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

PHONE

SRS

3D-MONO

MONO

1

2

Inputs of AP8306 are first multiplexed into 2 channels and volume is adjusted before passing to the SRS

TRUSURROUND block for SRS-3D, SRS HEADPHONE and DIALOG CLARITY processing. The mixed stereo

output will then enter the SRS TRUBASS block for bass enhancement and finally to the SRS PCT / 5-BAND

EQUALIZER block for further processing.

LT / RT

STEREO

2

SRS

TRUSURROUND

PASSIVE

MATRIX

4

SPEAKER

+

INPUT

SRS

DIALOG

CLARITY

MULTIPLEXER

SRS

PCT

/

MULTICHANNEL

7

LINEOUT

SRS

TRUBASS

&

2

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

PHONE

SRS

3D-MONO

MONO

1

2

Inputs of AP8306 are multiplexed into 2 channels and volume is adjusted before passing to the PASSIVE MATRIX

decoder. The decoded 4 signals are fed to the SRS TRUSURROUND block for TRUSURROUND, SRS

HEADPHONE and DIALOG CLARITY processing. The mixed stereo output then enter the SRS TRUBASS block for

bass enhancement and finally to the SRS PCT / 5-BAND EQUALIZER block for further processing.

Revision 2.9

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June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

BLOCK DIAGRAM (continued)

SRS 3D Mono

STEREO

2

SRS

TRUSURROUND

PASSIVE

MATRIX

4

SPEAKER

+

INPUT

SRS

DIALOG

CLARITY

MULTIPLEXER

SRS

PCT

/

MULTICHANNEL

7

LINEOUT

SRS

TRUBASS

&

2

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

PHONE

SRS

3D-MONO

MONO

1

2

Inputs of AP8306 are first multiplexed into 1 channel and volume is adjusted before passing to the SRS 3D-MONO

block for SRS MONO-to-STEREO processing. The stereo output will then enter the SRS TRUBASS block for bass

enhancement are finally to the SRS PCT / 5-BAND EQUALIZER block for further processing.

TruBass

STEREO

2

SRS

TRUSURROUND

PASSIVE

MATRIX

4

SPEAKER

+

INPUT

SRS

DIALOG

CLARITY

MULTIPLEXER

SRS

PCT

/

LINEOUT

MULTICHANNEL

7

SRS

TRUBASS

&

2

VOLUME

5-BAND

EQUALIZER

+

SRS 3D

HEAD

PHONE

SRS

3D-MONO

MONO

1

2

Inputs of AP8306 are multiplexed into 2 channels and volume is adjusted before passing to the SRS TRUBASS

block for bass enhancement and finally to the SRS PCT / 5-BAND EQUALIZER block for further processing.

Revision 2.9

Page 4 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

6. PIN CONFIGURATION

100 PIN PQFP

PH3L

CH1L

SMAXO

SVOLI

CH1R

GND

CH2L

CLK

CH2R

DATA

CH3L

RSTB

CH3R

A0

CH4L

VDD

CH4R

B5INR/NC8

B5OUTR/PCTRC1

B4INR/PCTRC2

B4OUTR/NC7

B3INR/PCTRC3

B3OUTR/PCTLC4

B2INR/PCTRC5

B2OUTR/NC6

B1INR/PCTRC6

B1OUTR/NC5

VDA1

CH5L

CH5R

CH6L

CH6R

CH7L

CH7R

VSA4

VDA4

DCIN

FSUMLRCO

RSUMLRO4

RSUMLRO3

RSUMLRO2

RSUMLRO1

RMINRLO4

RMINRLO3

RMINRLO2

RMINRLO1

FMINRLO4

FMINRLO3

FMINRLO2

VSA1

B1OUTL/NC4

B1INL/PCTLC6

B2OUTL/NC3

B2INL/PCTLC5

B3OUTL/PCTLC4

B3INL/PCTLC3

B4OUTL/NC2

B4INL/PCTLC2

B5OUTL/PCTLC1

B5INL/NC1

Revision 2.9

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June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

7. DEVICE PIN DESCRIPTIONS

SRS TruSurround XT + 5 BAND EQ configuration

PIN #

1

PIN NAME

B5INL

DESCRIPTIONS

Band 5 Left Channel Input

Band 5 Left Channel Output

Band 4 Left Channel Input

2

3

B5OUTL

B4INL

Band 4 Left Channel Output

Band 3 Left Channel Input

4

5

B4OUTL

B3INL

Band 3 Left Channel Output

Band 2 Left Channel Input

6

7

B3OUTL

B2INL

Band 2 Left Channel Output

Band 1 Left Channel Input

8

9

B2OUTL

B1INL

Band 1 Left Channel Output

Analog Ground 1

Analog Supply Voltage 1

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

B1OUTL

VSA1

VDA1

Band 1 Right Channel Output

Band 1 Right Channel Input

Band 2 Right Channel Output

Band 2 Right Channel Input

Band 3 Right Channel Output

Band 3 Right Channel Input

Band 4 Right Channel Output

Band 4 Right Channel Input

Band 5 Right Channel Output

Band 5 Right Channel Input

Digital Supply Voltage

B1OUTR

B1INR

B2OUTR

B2INR

B3OUTR

B3INR

B4OUTR

B4INR

B5OUTR

B5INR

VDD

Address Input

Reset Pin

Serial Data Line

Serial Clock Line

A0

RSTB

DATA

CLK

Digital Ground

GND

Sub-woofer Volume Control Input

Sub-woofer Low-Pass Filter Output

Sub-woofer Low-Pass Filter Input

Sub-woofer Output

SVOLI

SMAXO

SLP

SLPA

SUBOUT

VSA3

Analog Ground 3

Analog Supply Voltage 3

VDA3

Right Channel Volume Control Input for Speaker Use

Right Channel Maximum Output

Right Channel Volume Control Input for Headphone Use

Left Channel Volume Control Input for Headphone Use

Left Channel Maximum Output

Left Channel Volume Control Input

Right Channel Audio Output for Speaker Use

Left Channel Audio Output for Speaker Use

Right Channel Audio Output for Headphone Use

Left Channel Audio Output for Headphone Use

Right Channel Phase Shift Output1

Right Channel Phase Shift Output2

Right Channel Phase Shift Output3

Left Channel Phase Shift Output1

Left Channel Phase Shift Output2

RVOLI

RMAXO

HPRVOLI

HPLVOLI

LMAXO

LVOLI

OUTPUTR

OUTPUTL

HPOUTR

HPOUTL

PH1R

PH2R

PH3R

PH1L

PH2L

Revision 2.9

Page 6 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

SRS TruSurround XT + 5 BAND EQ configuration

PIN #

PIN NAME

DESCRIPTIONS

Left Channel Phase Shift Output3

Left Channel Audio Input for Stereo Input Channel 1

Right Channel Audio Input for Stereo Input Channel 1

Left Channel Audio Input for Stereo Input Channel 2

Right Channel Audio Input for Stereo Input Channel 2

Left Channel Audio Input for Stereo Input Channel 3

Right Channel Audio Input for Stereo Input Channel 3

Left Channel Audio Input for Stereo Input Channel 4

Right Channel Audio Input for Stereo Input Channel 4

Left Channel Audio Input for Stereo Input Channel 5

Right Channel Audio Input for Stereo Input Channel 5

Left Channel Audio Input for Stereo Input Channel 6

Right Channel Audio Input for Stereo Input Channel 6

Left Channel Audio Input for Stereo Input Channel 7

Right Channel Audio Input for Stereo Input Channel 7

Analog Ground 4

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

PH3L

CH1L

CH1R

CH2L

CH2R

CH3L

CH3R

CH4L

CH4R

CH5L

CH5R

CH6L

CH6R

CH7L

CH7R

VSA4

VDA4

Analog Supply Voltage 4

Dialog Clarity Input

DCIN

FSUMLRCO

RSUMLRO4

RSUMLRO3

RSUMLRO2

RSUMLRO1

RMINRLO4

RMINRLO3

RMINRLO2

RMINRLO1

FMINRLO4

FMINRLO3

FMNRLO2

FMINRLO1

MIXOUT

CB3

CB3B

CB2

CB2B

CB1

CB1B

LPC2

LPC1

COMPC2

COMPC

COMPO

MULTIN

BASSOUT

PUNCHIN

VDA2

VSA2

VREF

VREFB

Rear Perspective Network Output

Front Perspective Network Output

Left and Right Channel Mixed Output

Center Bandpass Filter3 Input

Center Bandpass Filter3 Output

Center Bandpass Filter2 Input

Center Bandpass Filter2 Output

Center Bandpass Filter1 Input

Center Bandpass Filter1 Output

TruBass Low-Pass Filter Output

TruBass Compressor Capacitor Output

TruBass Compressor Output

TruBass Multiplier Input

TruBass Output

TruBass Punch Input

Analog Supply Voltage 2

Analog Ground 2

Reference Voltage Input

Reference Voltage Output

Revision 2.9

Page 7 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

SRS TruSurround XT + SRS PCT configuration

PIN #

PIN NAME

DESCRIPTIONS

Not Connected

1

NC

PCT Capacitor Output for Left Channel

Not Connected

2

3

4

PCTLC1

PCTLC2

NC2

PCT Capacitor Output for Left Channel

Not Connected

5

6

7

8

PCTLC3

PCTLC4

PCTLC5

NC3

PCT Capacitor Output for Left Channel

Not Connected

Analog Ground 1

Analog Supply Voltage 1

Not Connected

PCT Capacitor Output for Right Channel

Not Connected

PCT Capacitor Output for Right Channel

Not Connected

PCT Capacitor Output for Right Channel

Not Connected

Digital Supply Voltage

Address Input

Reset Pin

Serial Data Line

Serial Clock Line

Digital Ground

9

PCTLC6

NC4

VSA1

VDA1

NC5

PCTRC6

NC6

PCTRC5

PCTRC4

PCTRC3

NC7

PCTRC2

PCTRC1

NC8

VDD

A0

RSTB

DATA

CLK

GND

SVOLI

SMAXO

SLP

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

Sub-woofer Volume Control Input

Sub-woofer Low-Pass Filter Output

Sub-woofer Low-Pass Filter Input

Sub-woofer Output

SLPA

SUBOUT

VSA3

Analog Ground 3

Analog Supply Voltage 3

VDA3

Right Channel Volume Control Input for Speaker Use

Right Channel Maximum Output

Right Channel Volume Control Input for Headphone Use

Left Channel Volume Control Input for Headphone Use

Left Channel Maximum Output

Left Channel Volume Control Input

Right Channel Audio Output for Speaker Use

Left Channel Audio Output for Speaker Use

Right Channel Audio Output for Headphone Use

Left Channel Audio Output for Headphone Use

Right Channel Phase Shift Output1

Right Channel Phase Shift Output2

Right Channel Phase Shift Output3

Left Channel Phase Shift Output1

Left Channel Phase Shift Output2

RVOLI

RMAXO

HPRVOLI

HPLVOLI

LMAXO

LVOLI

OUTPUTR

OUTPUTL

HPOUTR

HPOUTL

PH1R

PH2R

PH3R

PH1L

PH2L

Revision 2.9

Page 8 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

SRS TruSurround XT + SRS PCT configuration

PIN #

PIN NAME

DESCRIPTIONS

Left Channel Phase Shift Output3

Left Channel Audio Input for Stereo Input Channel 1

Right Channel Audio Input for Stereo Input Channel 1

Left Channel Audio Input for Stereo Input Channel 2

Right Channel Audio Input for Stereo Input Channel 2

Left Channel Audio Input for Stereo Input Channel 3

Right Channel Audio Input for Stereo Input Channel 3

Left Channel Audio Input for Stereo Input Channel 4

Right Channel Audio Input for Stereo Input Channel 4

Left Channel Audio Input for Stereo Input Channel 5

Right Channel Audio Input for Stereo Input Channel 5

Left Channel Audio Input for Stereo Input Channel 6

Right Channel Audio Input for Stereo Input Channel 6

Left Channel Audio Input for Stereo Input Channel 7

Right Channel Audio Input for Stereo Input Channel 7

Analog Ground 4

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

PH3L

CH1L

CH1R

CH2L

CH2R

CH3L

CH3R

CH4L

CH4R

CH5L

CH5R

CH6L

CH6R

CH7L

CH7R

VSA4

VDA4

Analog Supply Voltage 4

Dialog Clarity Input

DCIN

FSUMLRCO

RSUMLRO4

RSUMLRO3

RSUMLRO2

RSUMLRO1

RMINRLO4

RMINRLO3

RMINRLO2

RMINRLO1

FMINRLO4

FMINRLO3

FMNRLO2

FMINRLO1

MIXOUT

CB3

CB3B

CB2

CB2B

CB1

CB1B

LPC2

LPC1

COMPC2

COMPC

COMPO

MULTIN

BASSOUT

PUNCHIN

VDA2

VSA2

VREF

VREFB

Rear Perspective Network Output

Left and Right Channel Mixed Output

Center Bandpass Filter3 Input

Center Bandpass Filter3 Output

Center Bandpass Filter2 Input

Center Bandpass Filter2 Output

Center Bandpass Filter1 Input

Center Bandpass Filter1 Output

TruBass Low-Pass Filter Output

TruBass Compressor Capacitor Output

TruBass Compressor Output

TruBass Multiplier Input

TruBass Output

TruBass Punch Input

Analog Supply Voltage 2

Analog Ground 2

Reference Voltage Input

Reference Voltage Output

Revision 2.9

Page 9 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

8. APPLICATION CIRCUITS

SRS TruSurround XT + 5 BAND EQ

C22

0.1U

C21

0.1U

AVDD

C23

0.1U

C19

0.1U

1N

C57

1N

C56

R7

2MEG

C13

4.7U

C1

1U

C2

4.7N

3.3N

C59

3.3N

C58

10U

C26

C7

4.7N

10N

C61

10N

C60

10N

C6

0.47U

C3

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

B5INL

B5OUTL

B4INL

B4OUTL

B3INL

B3OUTL

B2INL

B2OUTL

B1INL

B1OUTL

VSA1

FMINRLO2

FMINRLO3

FMINRLO4

RMINRLO1

RMINRLO2

RMINRLO3

RMINRLO4

RSUMLRO1

RSUMLRO2

RSUMLRO3

RSUMLRO4

FSUMLRCO

DCIN

33N

C63

33N

C62

4.7N

C8

C11

4.7N

10N

C9

0.1U

C65

0.1U

C64

AVDD

C41

10U

AVDD

C40

0.1U

4.7N

C10

10U

C55

0.1U

C50

VDA1

B1OUTR

B1INR

B2OUTR

B2INR

B3OUTR

B3INR

B4OUTR

B4INR

B5OUTR

B5INR

VDD

A0

RSTB

DATA

CLK

GND

SVOLI

SMAXO

VDA4

VSA4

CH7R

CH7L

CH6R

CH6L

CH5R

CH5L

CH4R

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

C75

0.1U

C74

0.1U

AP8306PQ

AP8306-QF-L

CH7R

CH7L

CH6R

CH6L

C73

33N

C72

33N

CH5R

C71

10N

C70

10N

CH5L

CH4R

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

C69

3.3N

C68

3.3N

C37

0.1U

PH3L

C67

1N

C66

1N

C45

0.1U

C46

4.7N

0.1U

C94

10U

C84

22N

C85

C47

0.47N

C43

10N

C44

2.2N

1

2

3

JP1 1st data byte

C48

10U

C49

0.1U

C42

0.1U

1-2

2-3

0000010

0000000

C54

10U

C53

0.1U

AVDD

JP1

C88

10U

C89

10U

C90

10U

C91

10U

C95

10U

C96

10U

C92

10U

C93

10U 10U

C97

C98

10U

Revision 2.9

Page 10 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

SRS TruSurround XT + SRS PCT

C22

0.1U

C21

0.1U

C23

0.1U

C19

0.1U

R7

2MEG

AVDD

CV1

C25

C1

1U

C2

4.7N

10U

C26

C39

10U

C27

10U

C52

10U

C51

0.1U

CV1

C24

C7

4.7N

10N

C6

0.47U

C3

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

NC1

FMINRLO2

PCTLC1

PCTLC2

NC2

PCTLC3

PCTLC4

PCTLC5

NC3

PCTLC6

NC4

VSA1

VDA1

NC5

PCTRC6

NC6

PCTRC5

PCTRC4

PCTRC3

NC7

PCTRC2

PCTRC1

NC8

VDD

A0

RSTB

DATA

CLK

FMINRLO3

FMINRLO4

RMINRLO1

RMINRLO2

RMINRLO3

RMINRLO4

RSUMLRO1

RSUMLRO2

RSUMLRO3

RSUMLRO4

FSUMLRCO

DCIN

C56

0.015U

4.7N

C8

C58

0.1U

C11

4.7N

10N

C9

C59

4.7N

AVDD

C57

0.015U

4.7N

C10

10U

C55

0.1U

C50

C61

0.015U

R9

VDA4

VSA4

CH7R

CH7L

CH6R

CH6L

CH5R

CH5L

CH4R

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

AP8306-QF-L

AP8306PQ

CH7R

CH7L

CH6R

CH6L

4.7N

C65

C40

0.1U

C41

10U

10K

0.1U

0.015U C63

C62

AVDD

CH5R

CH5L

CH4R

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

SDA

SCL

GND

SVOLI

SMAXO

JP1 1st data byte

1

2

3

C48

10U

C49

0.1U

1-2

0000010

C37

0.1U

PH3L

2-3

0000000

C47

0.47N

J P1

0.1U

C94

10U

C84

22N

C85

C45

0.1U

C46

4.7N

C86

10U

C43

10N

C44

2.2N

C54

10U

C53

0.1U

AVDD

C42

0.1U

C88

10U

C89 C90

101U0U

C91

10U

C95

10U

C96

10U

C92

10U

C93

10U 10U

C97

C98

10U

Revision 2.9

Page 11 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

9. APPLICATION NOTES

n

Tolerance of all resistors = 1%

Tolerance of capacitors = 5%

Speaker out signal can be obtained through pin 42 and 43.

Headphone out signal can be obtained through pin 44 and 45.

Line out signal can be obtained through pin 37 and 40.

Volume of speaker out and headphone out signals can be controlled separately.

SRS PCT and 5-BAND EQUALIZER use different external components, user cannot switch

between these two modes by using software only. They must change the corresponding

components on the PCB.

n

The TruBass filter setting depends on the resonant frequency (f_o) of the speaker. Choose

different filter settings in accordance with f_oof the speaker for the actual application.

FILTERS SETTING FOR TRUBASS

f_o

40Hz

71.5k

11.5k

158k

60Hz

47.5k

7.68k

107k

100Hz

28.7k

4.64k

63.4k

15k

150Hz

19.1k

3.09k

42.2k

10k

200Hz

14.3k

2.32k

31.6k

7.5k

250Hz

11.3k

1.87k

25.5k

6.04k

1.3k

300Hz

9.53k

1.54k

21k

400Hz

7.15k

1.15k

15.8k

4.53k

976

R17

R18

R19

R21

R22

R23

R25

R26

R27

C24

C25

37.4k

8.06k

107k

24.9k

5.36k

71.5k

15k

5.62k

1.21k

15.8k

3.57k

1.02k

12.7k

0.056m

3.24k

42.2k

8.87k

2.55k

31.6k

0.15m

2.15k

28k

1.62k

21k

16.9k

3.57k

1.02k

12.7k

0.068m

12.7k

3.01k

845

22.6k

6.34k

78.7k

0.39m

5.9k

4.42k

1.27k

15.8k

0.082m

4.22k

53.6k

0.27m

1.69k

21k

10.7k

0.039m

0.1m

10. ABSOLUTE MAXIMUM RATINGS

[Under no circumstances should the absolute maximum ratings given below be violated. Stresses exceeding

one or more of the limiting values may cause permanent damage to the device.]

PARAMETER

SYMBOL

RATING

UNIT

Supply Voltage

Power Dissipation

V_cc

P_d

6

V

mW

ºC

250

Operating Temperature Range

Storage Temperature Range

T_opr

T_stg

-20 to 70

-25 to 100

ºC

Revision 2.9

Page 12 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

11. ELECTRICAL CHARACTERISTICS

[Refer to the application circuit V_CC=3.3V, T_a=25^oC, f=1kHz, all controls flat unless otherwise specified]

TEST CONDITION

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

MODE

TS

EQ/PCT

TB

SUPPLY

Supply Voltage

V_cc

I_pd

-

PD

-

3

-

3.3

-

5.5

150

V

Supply Current

(POWERSAVE mode OFF)

mA

I_nor

NORMAL

TSXT

LTRT

SRS3D

MONO

TRUBASS

-

42

Supply Current

(POWERSAVE mode ON

Sub-woofer ON)

-

37.7

38.6

37.8

35.2

32.0

31.8

30.0

30.8

30.0

27.4

24.0

32.6

33.5

32.6

30.1

26.8

24.8

25.7

25.0

22.4

19.0

18.9

-

ON

-

ON

OFF

ON

Note

-

Sub-woofer block consume ~ 1.5mA

under 3.3V supply voltage

-

OFF

ON

-

TSXT

LTRT

SRS3D

MONO

TRUBASS

-

mA

OFF

ON

-

TSXT

LTRT

SRS3D

MONO

TRUBASS

-

OFF

-

OFF

ON

-

TSXT

LTRT

SRS3D

MONO

TRUBASS

-

OFF

-

OFF

-

Supply Rejection

SVR

-

80

dB

GENERAL

Internal Reference Voltage

V_ref

|DG_a|

|DG_t|

N_out

-

0.5V_cc

-

2

0.2

-

V

Total Volume Set Error (absolute)

Total Tracking Error |ch.L – ch.R|

dB

-

Output noise

(f=20 to 20kHz)

-84

-91

-87

TSXT

LTRT

SRS3D

MONO

TRUBASS

-

OFF

dBV

-

Revision 2.9

Page 13 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

ELECTRICAL CHARACTERISTICS (continued)

[Refer to the application circuit V_CC=3.3V, T_a=25^oC, all controls flat unless otherwise specified]

TEST CONDITION

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

MODE

TS

EQ/PCT

TB

GENERAL

⁽¹⁾Output Noise

(f=20 to 20kHz)

N_out

-

-78

-80

-81

-86

-87

-78

-81

-80

-75

-77

-78

-80

-64

-67

-66

-75

-78

-77

-59

-61

-66

-73

-76

-75

-

TSXT

LTRT

ON

OFF

SRS3D

MONO

TRUBASS

TSXT

LTRT

OFF

ON

OFF

ON

SRS3D

MONO

TRUBASS

TSXT

LTRT

SRS3D

MONO

TRUBASS

TSXT

LTRT

EQ

MAX

OFF

ON

dBV

SRS3D

MONO

TRUBASS

TSXT

LTRT

PCT

MAX

SRS3D

MONO

TRUBASS

TSXT

LTRT

EQ

MAX

SRS3D

MONO

TRUBASS

TSXT

LTRT

PCT

MAX

ON

SRS3D

MONO

TRUBASS

⁽¹⁾Output noise is independent of operating voltage. Figures above can be applied for both 3.3V & 5.5V supply voltage.

Revision 2.9 Page 14 of 36 June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

ELECTRICAL CHARACTERISTICS (continued)

[Refer to the application circuit V_CC=5V, T_a=25^oC, 100Hz TRUBASS filter setting, all controls flat unless

otherwise specified]

TEST CONDITION

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

MODE

TS

EQ/PCT

TB

GENERAL

Maximum Input Voltage

THD=3%

(Input at one channel only)

V_IM

-

6

-

TSXT

LTRT

OFF

6

SRS3D

MONO

6

TRUBASS ON/OFF

TSXT

4

0

LTRT

ON

OFF

ON

3

SRS3D

MONO

TSXT

3

-

5

-

5

LTRT

OFF

SRS3D

5

1

MONO

0

TRUBASS ON/OFF

TSXT

3

-2

0

LTRT

ON

dBV

SRS3D

MONO

TSXT

-4

-13

-19

3

LTRT

OFF

SRS3D

EQ

MAX

OFF

MONO

TRUBASS ON/OFF

TSXT

3

LTRT

PCT

MAX

OFF

3

SRS3D

3

MONO

TRUBASS

TSXT

2

-

1

-

1

LTRT

PCT

MAX

OFF

ON

1

SRS3D

-2

-5

MONO

TRUBASS

Total Harmonic Distortion

(V_in=-30dBV, f=1kHz)

THD

NORMAL

ANY

-

0.2

%

Revision 2.9

Page 15 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

ELECTRICAL CHARACTERISTICS (continued)

[Refer to the application circuit V_CC=3.3V, T_a=25^oC, f=1kHz, all controls flat unless otherwise specified]

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

INPUT MASTER VOLUME

Input Resistance

R_in

At pins 52- 65

70

30.5

-19

9.5

0.9

-

75

31

-20

10

1

80

31.5

-21

10.5

1.1

1

kW

dB

Control Range

C_range

A_max

G_max

A_step

|DG_a|

|DG_t|

Maximum Attenuation

Maximum Gain

Step Resolution

Volume Set Error (absolute)

Tracking Error |ch.L – ch.R|

G = 10 through –21dB

-

0.1

OUTPUT BALANCE AND VOLUME CONTROL

Control Range

C_range

A_max

A_step

60.5

0.75

-

62

1

62.5

1.1

1.5

0.1

-

dB

Maximum Attenuation

Step Resolution

Attenuation Set Error (absolute)

Tracking Error |ch.L – ch.R|

Mute Attenuation

G = 0 through –62dB

-

|DG_a|

|DG_t|

A_mute

-

90

100

5-BAND EQ CONTROL

Step Resolution

A_step

|DG_a|

|DG_t|

0.8

-

1

1.2

dB

⁽¹⁾Set Error (absolute)

⁽¹⁾Tracking Error |ch.L – ch.R|

Band1 Control Range

Band2 Control Range

Band3 Control Range

Band4 Control Range

Band5 Control Range

G = -15 through 15dB

f=100Hz

-

0.5

-

0.1

C_range

±14.5

±15

±15.5

f=300Hz

f=1kHz

f=3kHz

f=10kHz

PCT CONTROL

Step Resolution

A_step

C_range

-

0.067

-

%

Mid-Band Control Range

High-Band Control Range

TS off, TB off, f=1kHz

TS off, TB off, f=10kHz

4

7

dB

DIALOG CLARITY CONTROL

Step Resolution

Control Range

A_step

-

0.016

8.5

-

%

C_range

TSXT mode, CENTERIN only, f=20kHz

dB

TRUBASS CONTROL

Step Resolution

A_step

-

0.016

6

-

%

Control Range

(f=100Hz, 100Hz filter setting)

C_range

TB mode, L->L

TB mode, L->R

dB

8.5

⁽¹⁾Set Error and Tracking Error depend on external components. The above values assume 1% variation of external components.

Revision 2.9 Page 16 of 36 June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

ELECTRICAL CHARACTERISTICS (continued)

[Refer to the application circuit V_CC=3.3V, T_a=25^oC, f=1kHz, all controls flat unless otherwise specified]

PARAMETER

SUB-WOOFER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

LPF Cut-off Frequency Range

Step Resolution

F_range

F_step

F_min

-

150

10

-

Hz

Minimum Cut-off Frequency Range

Maximum Cut-off Frequency Range

30

F_max

180

AUDIO OUTPUT

-

1V_cc

0.5V_cc

200

-

Maximum Output Voltage

Output DC Voltage Level

Output Resistance

V_om

V_dc

THD=3% at pin 37,40,42,43,44,45

At pin 37.40,42,43,44,45

V

150

250

R_out

At pin 37.40,42,43,44,45

W

DIGITAL CIRCUIT (I²C-BUS)

V_IH

V_IL

I_OL

Input High Voltage for Pin 25, 26, 27

Input Low Voltage for Pin 25, 26, 27

Output-Low Current for Pin 26

0.7V_cc

-

V

-

0.3 V_cc

4

-

mA

kW

Internal Pull-up Resistance at Pin 25

R_pu

50

OUTPUT VOLUME SET ERROR VS.

SOFTWARE VOLUME CONTROL

INPUT VOLUME SET ERROR VS.

SOFTWARE VOLUME CONTROL

2

f=1kHz

1

0

1

0

-1

-2

-1

-2

-70

-50

-30

-10

10

-25

-15

-5

5

15

Sc - SOFTWARE CONTROL (dB)

Revision 2.9

Page 17 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

12. EQUALIZER DESCRIPTION

12.1 EQ Control Circuit

In AP8306, there is a five-band, digitally controlled stereo equalizer. The circuit structures of the five bands are the

same and they are connected in a serial format. Each band can be considered as a filtering cell which can boost or

cut the signal at certain frequency range.

A. Boost mode

1

2π R1(R2 + R3)(C1)(C2)

(Hz)

f_O

=

IN

OUT

1

(C1)(C2)(R2)

R1

Q ≈

C1+ C2

R3

R2

C2

R2 +R3

+ 2

R1

R3

+ 2

R1

(dB)

G_V= 20log

C1

R1

B. Cut mode

IN

OUT

1

(Hz)

f_O

=

2π R1(R2 + R3)(C1)(C2)

R2

C2

R3

C1

1

(C1)(C2)(R2)

R1

Q ≈

C1+ C2

R3

+ 2

R1

(dB)

G_V= 20log

R1

R2 + R3

+ 2

R1

Under both boost and cut mode, their center frequency (f_o), Q-factor (Q) and maximum gain (G_v) can be controlled by

the external components (C1, C2, R1). Corresponding instance names in application circuit are shown below:

LEFT CHANNEL

C2

RIGHT CHANNEL

INSTANCE NAME IN STRUCTURE

C1

R1

C1

C2

R1

BAND1

BAND2

BAND3

BAND4

BAND5

C64

C63

C61

C59

C57

C65

C62

C60

C58

C56

R39

R38

R37

R36

R35

C74

C73

C71

C69

C67

C75

C72

C70

C68

C66

R40

R41

R42

R43

R44

INSTANCE NAME IN APPLICATION CIRCUIT

Revision 2.9

Page 18 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

12.2 EQ Characteristics

Figure 1: Band1 Frequency Response

Figure 4: Band4 Frequency Response

R2+R3 = 45.3k

C1=C2=0.1u

R1=4.9k

R2+R3 = 45.3k

C1=C2=3.3n

R1=4.9k

Figure 2: Band2 Frequency Response

Figure 5: Band5 Frequency Response

R2+R3 = 45.3k

C1=C2=1n

R1=4.9k

R2+R3 = 45.3k

C1=C2=33n

R1=4.9k

Figure 3: Band3 Frequency Response

R2+R3 = 45.3k

C1=C2=10n

R1=4.9k

Revision 2.9

Page 19 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

13. I²C-BUS CONCEPTS

I²C-bus is a simple bi-directional, 2-wire serial

data (SDA) and serial clock (SCL) bus for inter-

IC control. Both lines must be connected to a

positive supply via a pull-up resistor when

connected to output of device.

Device Address

After the Start condition, the address of a

Slave device is sent. This address is 7 bits

long followed by an 8^th-bit which is a data

direction bit (R/W): 0 indicates a transmission

(Write), 1 indicates a request for data (Read).

Data Validity

Acknowledge

One data bit is transferred during each clock

pulse. The data on the SDA line must remain

stable during the HIGH period of the clock

pulse. Changes in the data line at this time will

be interpreted as control signals.

There is no limit to the number of data byte

transferred between the start and the stop

conditions from transmitter to receiver. Each

byte of 8 bits is followed by an acknowledge

bit (ACK). A slave receiver must generate an

ACK receiving each byte. Also a master must

generate an ACK after receiving each byte

that has been clocked out of the slave

transmitter. Device that acknowledges has to

pull down the SDA line during the

acknowledge clock pulse, so that the SDA

line is stable LOW during the HIGH period of

the ACK related clock pulse, set-up and hold

times must be taken into consideration. A

master receiver must signal the end of data to

the transmitter by not generating an ACK on

the last byte that has been clocked out of the

slave. In this case, the transmitter must

release the data line HIGH to allow the

master to generate a stop condition.

SDA

SCL

change

SDA stable

data valid

of data

allowed

Data Transfer

Start And Stop Conditions

Both data and clock remain HIGH when the

bus is not busy. A HIGH-to-LOW transition of

the data, while the clock is HIGH, is defined as

the start condition (S). A LOW-to-HIGH

transition of the data line while the clock is

HIGH is defined as the stop condition (P).

SDA

SCL

S

P

START condition

STOP condition

Definition of START and STOP condition

DATA OUTPUT

BY TRANSMITTER

not acknowledge

acknowledge

DATA OUTPUT

BY RECEIVER

SCL FROM

MASTER

2

9

1

8

clock pulse for

acknowledge

START

condition

Acknowledgement on I²C-bus

Page 20 of 36

Revision 2.9

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

Overall Diagram

*NAK

MSB

LSB

MSB

LSB

SDA

*ACK

1

7

2-6

9

8

2-7

8

9

SCL

DATA

Slave Address

R/W

ACK

Start

Stop

Condition

* NAK – SDA line is HIGH

**ACK – SDA line is pulled LOW by receiver

Overall Diagram

14. I²C-BUS PROTOCOL

The interface protocol comprises:

n

A start condition (S)

A chip address byte

A sub-address byte

n

A sequence of data + acknowledge (A)

A stop condition (P)

CHIP ADDRESS

SUB-ADDRESS

DATA 1 to DATA n

MSB

LSB

0

MSB

X

LSB

MSB

LSB

S

0

A0

A

X

B

DATA

A

DATA

A

P

“A0” of chip address must match the logic sense at pin 24

Non-Incremental Bus

The user sends a start condition, the correct chip address, a sub-address with B=0 (non-

incremental bus), an 8-bit data byte, a stop condition.

CHIP ADDRESS

SUB-ADDRESS

1 BYTE DATA

MSB

0

LSB

0

MSB

X

LSB

MSB

LSB

S

0

A0

A

X

0

D3 D2 D1 D0

A

D7 D6 D5 D4 D3 D2 D1 D0

A

P

Incremental Bus

The user sends a start condition, the correct chip address, a sub-address with B=1 (incremental

bus), a series of 8-bit data bytes and a stop condition. Now the chip is in a loop condition with an

auto increment of the sub-address. The 1^stdata byte will be sent to the sub-address, the 2^nddata

byte will be sent to the sub-address plus one, etc., and will end when the stop condition is received.

CHIP ADDRESS

SUB-ADDRESS

DATA 1 to DATA n

MSB

0

LSB

0

MSB

X

LSB

MSB

LSB

S

0

A0

A

X

1

D3 D2 D1 D0

A

DATA

A

P

Revision 2.9

Page 21 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

15. SUB-ADDRESS BYTE

MSB

D7

X

LSB

D0

0

FUNCTION

D6

X

D5

X

D4

B

D3

0

1

D2

0

1

0

1

D1

0

1

0

1

0

1

0

1

SPK MUTE, HP MUTE, SUB-WOOFER MUTE, INPUT VOLUME

POWERSAVE on/off, MODE SELECT, INPUT SELECT

ZEROCROSS, TB on/off, TSXT BYP, PCT/EQ on/off, DC, HP, PL

LEFT SPEAKER ATTENUATE

X

1

X

0

X

1

X

0

RIGHT SPEAKER ATTENUATE

X

1

LEFT HEADPHONE ATTENUATE

X

0

RIGHT HEADPHONE ATTENUATE

TRUBASS PUNCH LEVEL

X

1

X

0

DIALOG CLARITY LEVEL

X

1

SUB INPUT, SUB on/off, LPF on/off, PHASE, LPF SETTING

SUB-WOOFER ATTENUATE

X

0

X

1

EQ BAND 1 LEVEL / SRS PCT HIGH-BAND LEVEL

EQ BAND 2 LEVEL / SRS PCT MID-BAND LEVEL

EQ BAND 3 LEVEL

X

0

X

1

X

0

EQ BAND 4 LEVEL

X

1

EQ BAND 5 LEVEL

B = 0 non-incremental

B = 1 incremental

Revision 2.9

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SRS TruSurround XT Audio Processor

16. POWER ON RESET CONDITION

SUB-ADDRESS BYTE

POWER ON RESET CONDITION

Mode Status

MSB

D7

LSB

D0

Bit

Status

D6

D5

D4

D3

D2

D1

Speaker output: MUTE

D7

D6

D5

1

Headphone output: MUTE

Sub-woofer output: MUTE

Input volumes: 0dB

X

B

0

1

D4:D0 10101

D7

D6:D3 0000

Power-save mode: ON

1

SRS audio mode: TSXT + SRS PCT

Selected input channels: CH1L,CH1R,

CH2L,CH2R,

X

B

0

1

D2:D0

000

CH3L,CH3R,CH4L

Zero cross: ON

TruBass enhancement: ON

TSXT BYPASS: OFF

D7

D6

D5

1

0

PCT / EQ: ON

D4

1

X

0

DIALOG CLARITY: ON

SRS HEADPHONE mode: OFF

Prologic mode supported: 6.1 Mode

D3

D2

D1:D0

1

0

00

X

B

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

Left speaker attenuates: 0dB

Right speaker attenuates: 0dB

Left headphone attenuates: 0dB

Right headphone attenuates: 0dB

TRUBASS punch level: 0

D5:D0 000000

DIALOG CLARITY level: 0

Sub-woofer: ON

D7

D6

D5

D4

1

0

1

0

Sub-woofer input: Output of multiplexer

Sub-woofer low-pass filter function: ON

Sub-woofer output phase: NORMAL

Sub-woofer LPF cutoff frequency: 60Hz

X

B

1

0

1

D3:D0 1100

X

B

1

0

1

0

1

0

1

0

1

0

1

Sub-woofer attenuates: 0dB

D5:D0 000000

EQ band 1 / SRS PCT high-band level: 0dB D4:D0 00000

EQ band 2 / SRS PCT mid-band level: 0dB

EQ band 3 level: 0dB

D4:D0 00000

EQ band 4 level: 0dB

EQ band 5 level: 0dB

B = 0 non-incremental

B = 1 incremental

Revision 2.9

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AP8306

SRS TruSurround XT Audio Processor

17. DATA BYTE SPECIFICATION

SPK, HP, SUB-WOOFER MUTE, INPUT VOLUME (SUB-ADDRESS “XXXB0000”)

D7 – SPEAKER MUTE on/off

D5 – SUB-WOOFER MUTE on/off

D6 – HEADPHONE MUTE on/off

D4:D0 – INPUT VOLUME CONTROL

LEFT & RIGHT SPEAKER OUTPUT MUTE

MSB

LSB

D0

SPK MUTE

D7

0

D6

D5

D4

D3

D2

D1

Speaker output ON

1

Speaker output MUTE

LEFT & RIGHT HEADPHONE OUTPUT MUTE

MSB

LSB

D0

SPK MUTE

D7

D6

0

D5

D4

D3

D2

Headphone output ON

1

Headphone output MUTE

SUB-WOOFER OUTPUT MUTE

MSB

LSB

D0

SUB MUTE

D7

D6

D5

0

D4

Sub-woofer output ON

1

Sub-woofer output MUTE

INPUT VOLUME

MSB

LSB

D0

INPUT VOLUME

1dB STEPS

D7

D6

D5

1

·

1

·

1

·

1

·

1

0

·

+10dB

+9dB

·

1

·

0

·

1

·

1

0

·

0

1

0

·

+1dB

0dB

-1dB

·

1

0

·

0

1

·

0

1

·

0

1

·

0

1

·

-5dB

-6dB

·

0

1

0

-20dB

-21dB

Revision 2.9

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SRS TruSurround XT Audio Processor

POWERSAVE on/off, MODE SELECT, INPUT SELECT (SUB-ADDRESS “XXXB0001”)

D7 – POWERSAVE on/off

D6:D3 – MODE SELECTION

D2:D0 – INPUT SOURCE SELECTION

POWERSAVE ON/OFF

MSB

LSB

D0

POWERSAVE

D7

0

D6

D5

D4

D3

D2

D1

OFF

ON

1

In Power-save mode, irrelevant components will be shut off and no power will be dissipated for those parts.

MODE

TruSurround XT

SRS 3D

BLOCK(S) SHUT OFF

SRS 3D-MONO, PASSIVE MATRIX

SRS 3D-MONO

LT/RT

TRUBASS

SRS 3D-MONO, TRUSURROUND, PASSIVE MATRIX

TRUSURROUND, PASSIVE MATRIX

TRUBASS

3D MONO

TRUBASS OFF

TSXT BYPASS

SRS PCT / EQ OFF

SUB-WOOFER OFF

SRS 3D-MONO, TRUSURROUND, PASSIVE MATRIX

SRS PCT / 5 BAND EQUALIZER

SUB-WOOFER

Points to note for changing mode

Mute at output is needed to prevent click noise when changing from one mode to another mode. The timing of MCU must be

carefully noted. If it is under Power-save mode, the MCU should i) send commands to mute all the outputs, ii) turn off Power-save

mode, iii) change the mode, iv) turn on Power-save mode again, v) wait for about 10ms and restore the original mute status. Total 5

times of data transfer are needed.

AUDIO TECHNOLOGY SELECTION

MSB

D7

LSB

D0

MODE SELECT

D6

0

1

D5

0

1

0

1

D4

0

1

0

1

0

1

0

1

D3

0

D2

D1

TruSurround XT + SRS PCT

SRS-3D + SRS PCT

1

0

LT / RT + SRS PCT

1

TRUBASS + SRS PCT

*0

*1

3D-MONO + SRS PCT

POWERDOWN

X

0

1

TruSurround XT + 5 BAND EQ

SRS-3D + 5 BAND EQ

0

LT / RT + 5 BAND EQ

1

TRUBASS + 5 BAND EQ

*0

*1

3D-MONO + 5 BAND EQ

POWERDOWN

X

* D3 under 3D-MONO MODE is for input select. Refer to the part “INPUT CHANNEL SELECTION” for details.

Revision 2.9

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SRS TruSurround XT Audio Processor

POWERSAVE on/off, MODE SELECT, INPUT SELECT (SUB-ADDRESS “XXXB0001”)

INPUT CHANNEL SELECTION (STEREO: SRS-3D MODE, LT / RT MODE, TRUBASS MODE)

MSB

D7

LSB

D0

0

STEREO LEFT

STEREO RIGHT

D6

D5

D4

D3

D2

0

D1

0

CH1L

CH2L

CH3L

CH4L

CH5L

CH6L

CH7L

-

CH1R

CH2R

CH3R

CH4R

CH5R

CH6R

CH7R

-

0

1

0

1

0

1

0

1

0

1

0

1

INPUT CHANNEL SELECTION (MULTI-CHANNEL: TruSurround XT MODE)

MSB

LSB

FLEFTI

FRIGHTI

RLEFTI RRIGHTI CENTERIN RCENTERI SUBIN

D7 D6 D5 D4 D3 D2 D1 D0

X

0

X

0

1

CH1L

CH5L

CH1R

CH5R

CH2L

CH6L

CH2R

CH6R

CH3L

CH7L

CH3R

CH7R

CH4L

CH4R

X000 - TruSurround XT MODE

INPUT CHANNEL SELECTION (MONO: 3D-MONO MODE)

MSB

D7

LSB

D0

0

MONO

D6

X

D5

1

D4

0

D3

0

1

D2

0

1

0

1

0

1

0

1

D1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

CH1L

CH2L

CH3L

CH4L

CH5L

CH6L

CH7L

-

0

1

0

CH1R

CH2R

CH3R

CH4R

CH5R

CH6R

CH7R

-

0

1

X100, X101 - MONO MODE

D3 under 3D-MONO mode is for input channel selection

Revision 2.9

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SRS TruSurround XT Audio Processor

ZEROCROSS, TB on/off, TSXT BYPASS, EQ on/off, DC, HP, PL (SUB-ADDRESS “XXXB0010”)

D7 – ZEROCROSS on/off

D3 – DIALOG CLARITY on/off

D2 – SRS HEADPHONE MODE

D1:D0 – PROLOGIC MODE SELECT

D6 – TRUBASS ENHANCEMENT on/off

D5 – TSXT BYPASS (except TRUBASS) on/off

D4 – SRS PCT / 5-BAND EQ on/off

ZEROCROSS ON/OFF

MSB

LSB

D0

ZEROCROSS

D7

0

D6

D5

D4

D3

D2

D1

OFF

ON

1

TRUBASS ON/OFF

MSB

LSB

D0

TRUBASS

D7

D6

0

D5

D4

D3

D2

D1

OFF

ON

1

TRUBASS off will bypass the block “SRS TRUBASS” in block diagram and “SRS TRUBASS” will not drawn any current under

power-save mode. For TRUBASS mode, if TRUBASS off is selected, input signal will just be passed to “SRS PCT / 5-BAND EQ”.

TSXT BYPASS

MSB

D7

LSB

D0

TSXT

D6

D5

0

D4

D3

D2

D1

NORMAL

BYPASS

1

TSXT BYPASS will bypass three blocks in block diagram: “PASSIVE MATRIX”, “SRS 3D-MONO” and “SRS TRUSURROUND”. No

current will be drawn by “PASSIVE MATRIX”, “SRS 3D-MONO” and “SRS TRUSURROUND” under power-save mode when

TSXT BYPASS.

SRS PCT / 5-BAND EQUALIZER ON/OFF

MSB

D7

LSB

D0

PCT / EQ

D6

D5

D4

0

D3

D2

D1

OFF

ON

1

SRS PCT / 5-BAND EQUALIZER off will bypass the block “SRS PCT / 5-BAND EQUALZIER” in block diagram and “SRS PCT / 5-

BAND EQUALZIER” will not draw any current under power-save mode

SRS DIALOG CLARITY ON/OFF

MSB

D7

LSB

D0

DC

D6

D5

D4

D3

0

D2

D1

OFF

ON

1

DIALOG CLARITY is supported in the following 3 modes:

1. TruSurround XT – CENTER DIALOG CLARITY

2. LT / RT – CENTER DIALOG CLARITY

3. SRS-3D – FRONT DIALOG CLARITY

Revision 2.9

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AP8306

SRS TruSurround XT Audio Processor

ZEROCROSS, TB on/off, TSXT BYPASS, EQ on/off, DC, HP, PL (SUB-ADDRESS “XXXB0010”)

SRS HEADPHONE MODE ON/OFF

MSB

D7

LSB

D0

HP

D6

D5

D4

D3

D2

0

D1

OFF

ON

1

SRS HEADPHONE MODE is supported in the following 3 modes:

1. TruSurround XT

2. LT / RT

3. SRS-3D

PROLOGIC MODE

MSB

D7

LSB

D0

0

PL

D6

D5

D4

D3

D2

D1

0

6.1 MODE

5.1 MODE

0

1

0

PROLOGIC I MODE

PROLOGIC II MODE

1

PROLOGIC MODE selection

Different PROLOGIC MODE selection bits should be set and different rear input channels should be fed for different systems:

1. PROLOGIC I system

2. PROLOGIC II system

-

RCENTERI should be the only input since it is mono

RLEFTI and RRIGHTI should be used and no RCENTERI input

3. 5.1 CHANNEL system - RCENTERI is not used, RLEFTI and RRIGHTI should be fed

4. 6.1 CHANNEL system - RCENTERI, RLEFTI and RRIGHTI should be all used

PROLOGIC MODE selection is supported in TruSurround XT mode only.

SUB-ADDRESS “XXXB0010” - SUMMARY

TRUBASS

ENHANCE

ON/OFF

TSXT

BYPASS

ON/OFF

SRS PCT

/ 5-BAND EQ

ON/OFF

PROLOGIC

MODE

SELECTION

SRS

DIALOG

NO. OF INPUT

CHANNEL (S)

MODE

HEADPHONE CLARITY

ON/OFF

ü

û

ü

û

ü

û

ü

û

TruSurround XT

SRS 3D

7 ´ 2

2 ´ 7

1 ´ 14

LT/RT

TRUBASS

3D-MONO

ü

û

DON’T

CARE

POWERDOWN

û

Revision 2.9

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SRS TruSurround XT Audio Processor

LEFT SPEAKER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0011”)

D5:D0 – LEFT SPEAKER OUTPUT CONTROL

MSB

LSB

D0

LEFT SPEAKER OUTPUT ATTENUATION

1dB STEPS

D7

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

MUTE

-62dB

-61dB

·

0

1

0

1

0

-2dB

-1dB

0dB

RIGHT SPEAKER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0100”)

D5:D0 – RIGHT SPEAKER OUTPUT CONTROL

MSB

D7

LSB

D0

RIGHT SPEAKER OUTPUT ATTENUATION

1dB STEPS

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

MUTE

-62dB

-61dB

·

0

1

0

1

0

-2dB

-1dB

0dB

LEFT HEADPHONE OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0101”)

D5:D0 – LEFT HEADPHONE OUTPUT CONTROL

MSB

D7

LSB

D0

LEFT HEADPHONE OUTPUT ATTENUATION

1dB STEPS

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

MUTE

-62dB

-61dB

·

0

1

0

1

0

-2dB

-1dB

0dB

Revision 2.9

Page 29 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

RIGHT HEADPHONE OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB0110”)

D5:D0 – RIGHT HEADPHONE OUTPUT CONTROL

MSB

LSB

D0

RIGHT HEADPHONE OUTPUT ATTENUATION

1dB STEPS

D7

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

MUTE

-62dB

-61dB

·

0

1

0

1

0

-2dB

-1dB

0dB

TRUBASS PUNCH LEVEL (SUB-ADDRESS “XXXB0111”)

D5:D0 – TRUBASS PUNCH LEVEL CONTROL

MSB

D7

LSB

D0

TRUBASS PUNCH LEVEL

LINEAR

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

63

62

61

·

0

1

0

1

0

2

1

0

DIALOG CLARITY LEVEL (SUB-ADDRESS “XXXB1000”)

D5:D0 – DIALOG CLARITY LEVEL CONTROL

MSB

D7

LSB

D0

DIALOG CLARITY LEVEL

LINEAR

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

63

62

61

·

0

1

0

1

0

2

1

0

Revision 2.9

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SRS TruSurround XT Audio Processor

SUB on/off, SUB INPUT, LPF on/off, PHASE, LPF SETTING (SUB-ADDRESS “XXXB1001”)

D7 – SUB-WOOFER on/off

D4 – SUB-WOOFER OUTPUT PHASE INVERT

D6 – SUB-WOOFER INPUT SELECT

D5 – SUB-WOOFER LPF on/off

D3:D0 – SUB-WOOFER LPF CUTOFF FREQUENCY

SUB-WOOFER ON/OFF

MSB

LSB

D0

SUB

D7

0

D6

D5

D4

D3

D2

D1

OFF

ON

1

When SUB-WOOFER is off, no signal will be passed to the “SUB-WOOFER” block and no current will be drawn for “SUB-

WOOFER” at power-save mode.

SIGNAL INPUT FOR SUB-WOOFER

MSB

D7

LSB

D0

SUB INPUT

D6

0

D5

D4

D3

D2

D1

Output of MULTIPLEXER

Output of SRS TRUBASS

1

Using “SRS PCT” or “5-BAND EQ” is not cared for SUB-WOOFER INPUT

SUB-WOOFER LOW-PASS FILTER ON/OFF

MSB

D7

LSB

D0

LPF

D6

D5

0

D4

D3

D2

D1

OFF

ON

1

When SUB-WOOFER LOW-PASS FILTER is off, SUB-WOOFER output will not be low passed.

SUB-WOOFER OUTPUT PHASE 180^oINVERT ON/OFF

MSB

D7

LSB

D0

PHASE

D6

D5

D4

0

D3

D2

D1

NORMAL

1

180^oINVERT

Revision 2.9

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SRS TruSurround XT Audio Processor

SUB on/off, SUB INPUT, LPF on/off, PHASE, LPF SETTING (SUB-ADDRESS “XXXB1001”)

SUB-WOOFER LOW-PASS FILTER CUTOFF FREQUENCY SETTING

MSB

D7

LSB

D0

1

LPF SETTING

D6

D5

D4

D3

1

0

D2

1

0

1

0

D1

1

0

1

0

1

0

1

0

30Hz

40Hz

0

1

50Hz

0

60Hz

1

70Hz

0

80Hz

1

90Hz

0

100Hz

110Hz

120Hz

130Hz

140Hz

150Hz

160Hz

170Hz

180Hz

1

0

1

0

1

0

1

0

BLOCK DIAGRAM FOR SUB-WOOFER

INPUT

MULTIPLEXER

&

VOLUME

D4

D3:D0

PHASE

INVERT

LPF SETTING

SRS

D5

LPF on/off

TRUBASS

D6

D7

SUB-INPUT

SELECT

SUBWOOFER

on/off

SMAXO

LPF

SUB-WOOFER BLOCK

Revision 2.9

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SRS TruSurround XT Audio Processor

SUB-WOOFER OUTPUT ATTENUATOR (SUB-ADDRESS “XXXB1010”)

D5:D0 – SUB-WOOFER OUTPUT CONTROL

MSB

LSB

D0

SUB-WOOFER OUTPUT ATTENUATION

1dB STEPS

D7

D6

D5

D4

D3

D2

D1

1

·

1

·

1

·

1

·

1

0

·

1

0

1

·

MUTE

-62dB

-61dB

·

0

1

0

1

0

-2dB

-1dB

0dB

EQ BAND 1 LEVEL / SRS PCT HIGH-BAND LEVEL (SUB-ADDRESS “XXXB1011”)

D4:D0 – EQ BAND1 / SRS PCT HIGH-BAND CONTROL

MSB

D7

LSB

D0

1

EQ BAND 1

1dB STEPS

+15dB

SRS PCT HIGH-BAND

1dB STEPS

D6

D5

D4

D3

D2

D1

0

1

+15dB

·

-

0

1

0

1

0

1

+1dB

0dB

-

+1dB

0dB

-

-1dB

·

-

1

-15dB

EQ BAND 2 LEVEL / SRS PCT MID-BAND LEVEL (SUB-ADDRESS “XXXB1100”)

D4:D0 – EQ BAND2 / SRS PCT MID-BAND CONTROL

MSB

D7

LSB

D0

1

EQ BAND 1

1dB STEPS

+15dB

SRS PCT MID-BAND

1dB STEPS

D6

D5

D4

D3

D2

D1

0

1

+15dB

·

-

0

1

0

1

0

1

+1dB

0dB

-

+1dB

0dB

-

-1dB

·

-

1

-15dB

Revision 2.9

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SRS TruSurround XT Audio Processor

EQ BAND 3 LEVEL (SUB-ADDRESS “XXXB1101”)

D4:D0 – EQ BAND3 CONTROL

MSB

LSB

D0

1

EQ BAND 3

1dB STEPS

+15dB

D7

D6

D5

D4

D3

D2

D1

0

1

·

0

1

0

1

0

1

+1dB

0dB

-1dB

·

1

-15dB

EQ BAND 4 LEVEL (SUB-ADDRESS “XXXB1110”)

D4:D0 – EQ BAND4 CONTROL

MSB

LSB

D0

1

EQ BAND 4

1dB STEPS

+15dB

D7

D6

D5

D4

D3

D2

D1

0

1

·

0

1

0

1

0

1

+1dB

0dB

-1dB

·

1

-15dB

EQ BAND 5 LEVEL (SUB-ADDRESS “XXXB1111”)

D4:D0 – EQ BAND5 CONTROL

MSB

LSB

D0

EQ BAND 5

1dB STEPS

D7

D6

D5

D4

D3

D2

D1

0

1

+15dB

·

0

1

·

0

·

0

·

0

·

1

0

1

·

+1dB

0dB

-

-1dB

·

1

-15dB

Revision 2.9

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AP8306

SRS TruSurround XT Audio Processor

2. PACKAGE INFORMATION ( PQFP-100)

Revision 2.9

Page 35 of 36

June 9, 2005

AP8306

SRS TruSurround XT Audio Processor

ValenceTech Limited

Unit 2001, 20/F., APEC Plaza,

49 Hoi Yuen Road, Kwun Tong, Hong Kong

Tel: (852) 2797 3288

Fax: (852) 2776 7770

Email: inquiry@valencetech.com

Website: http://www.valencetech.com

is a brand name of ValenceTech Limited.

The SRS TruSurround XT Technology rights in the AP8306 are owned by SRS Labs, Inc. a United States Corporation

and licensed to ValenceTech Ltd. SRS is protected under US and foreign patents issued and/or pending. The symbol

is a trademark of SRS Labs, Inc. in the United State and selected foreign countries. Neither the purchase of the

AP8306, nor the corresponding sale of audio enhancement equipment conveys the right to sell commercialized

recordings made with any SRS technology. SRS Labs requires all set makers to comply with all rules and regulations

as outlined in the SRS Trademark Usage Manual separately provided.

IMPORTANT NOTICE

“Preliminary” product information describes products that are in production, but for which full characterization data is not yet available. ValenceTech Ltd. and its affiliates (“Valence”) believe that the

information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied).

Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the

terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by

Valence for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document

is the property of Valence and by furnishing this information, Valence grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other

intellectual property rights. Valence owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your

organization with respect to Valence integrated circuits or other products of Valence. This consent does not extend to other copying such as copying for general distribution, advertising or

promotional purposes, or for creating any work for resale. An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies

described in this material and controlled under the “Foreign Exchange and Foreign Trade Law” is to be exported or taken out of Japan. An export license and /or quota needs to be obtained from the

competent authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign Trade Law and is to be exported or taken out of the

PRC. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR

ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). VALENCE PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN AIRCRAFT SYSTEMS, MILITARY

APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS (INCLUDING MEDICAL DEVICES, AIRCRAFT

SYSTEMS OR COMPONENTS AND PERSONAL OR AUTOMOTIVE SAFETY OR SECURITY DEVICES). INCLUSION OF VALENCE PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD

TO BE FULLY AT THE CUSTOMER’S RISK AND VALENCE DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY VALENCE PRODUCT THAT IS USED IN SUCH

A MANNER. IF THE CUSTOMER OR

CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF VALENCE PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY VALENCE,

ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT

FROM OR ARISE IN CONNECTION WITH THESE USES.

Purchasers of ValenceTech products must enter into a license agreement directly with SRS Labs if the royalty for the use of the SRS technologies is not included in the ValenceTech purchase price.

Neither the purchase of a ValenceTech product nor the license of SRS products conveys the right to sell commercialized recordings made with any ValenceTech or SRS technologies.

ValenceTech, SRS Labs, SRS, and the SRS Labs logo designs are trademarks of SRS Labs, Inc. All other brand and product names in this document may be trademarks or service marks of their

respective owners.

Revision 2.9

Page 36 of 36

June 9, 2005


型号：	AP8306
厂家：	ETC
描述：	AP8306 SRS AP8306 SRS
文件：	总38页 (文件大小：571K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AP8306 [ETC]

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