STV8237/T datasheet, PDF - EEWORLD Datasheet

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STV8237/T: DescriptionSPECIALTY CONSUMER CIRCUIT, PQFP80, PLASTIC, QFP-80; CategoryOther integrated circuit (IC) Consumption circuit; File Size2MB，167 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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STV8237/T Overview

SPECIALTY CONSUMER CIRCUIT, PQFP80, PLASTIC, QFP-80

STV8237/T Parametric

Parameter Name	Attribute value
Parts packaging code	QFP
package instruction	PLASTIC, QFP-80
Contacts	80
Reach Compliance Code	compliant
Is Samacsys	N
Other features	IT ALSO REQUIRES 3.13V TO 3.47V SUPPLY
Commercial integrated circuit types	CONSUMER CIRCUIT
JESD-30 code	S-PQFP-G80
length	14 mm
Number of functions	1
Number of terminals	80
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	LQFP
Encapsulate equivalent code	QFP80,.64SQ
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE
power supply	1.8,3.3,8 V
Certification status	Not Qualified
Maximum seat height	1.6 mm
Maximum supply voltage (Vsup)	1.9 V
Minimum supply voltage (Vsup)	1.7 V
surface mount	YES
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	QUAD
width	14 mm
Base Number Matches	1

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STV8247, STV8257, STV8277, STV8287

Digital audio decoder/processors

for A2 and NICAM television/video recorders

Features

■

Full-automatic multi-standard demodulation

– B / G / I / L / M / N / D / K standards

– Mono AM and FM

– FM 2-carrier (German and Korean Zweiton)

and NICAM

Multi-channel capability

– 3 I²S digital inputs, S/PDIF (pass-thru/out)

– 1 I²S digital output (shared with one of the

I²S digital inputs)

– 5.1 analog outputs

– Dolby

Pro Logic

and Dolby

Pro Logic II

Sound processing: Loudspeaker

– ST royalty-free processing: ST

WideSurround

, ST OmniSurround

(Virtual Dolby

‚ Surround and Virtual Dolby

‚

Digital compliant) and ST Dynamic Bass

– SRS

‚ WOW

, SRS

‚ TruSurround XT

(Virtual Dolby

‚ Surround and Virtual

Dolby

‚ Digital compliant)

– Independent volume/balance

– SVC (smart volume control), 5-band

equalizer and loudness

Sound processing: Headphone

– SVC (smart volume control), bass-treble,

loudness and SRS

‚ TruBass

– Independent volume/balance

Analog audio matrix

– 4 stereo inputs and 3 stereo outputs

– THRU mode

– 2 V

RMS

capability

Audio delay for audio video synchronization

– Embedded stereo delay up to 90 ms when

processing at 32KHz (demodulator input

mode) and up to 60 ms when processing at

48KHz (SCART only input mode)

– Independent delay on headphone and

loudspeaker channels

■

Description

The STV82x7 family, based on audio DSPs

(digital signal processors), performs high quality

and advanced dedicated digital audio

processing.The STV82x7 devices provide all of

the necessary resources for automatic detection

and demodulation of analog audio transmissions

for European and Asian terrestrial TV broadcasts.

Virtual or true, multi-channel capabilities and easy

digital links make them ideal for digital audio low

cost consumer applications. Starting from

enhanced stereo up to independent control of 5

loudspeakers and a subwoofer (5.1 channels), the

STV82x7 family offers standard and advanced

features plus sound enhancements, spatial and

virtual effects to enhance television viewer

comfort and entertainment.

■

September 2009

Doc ID 10163 Rev 3

1/167

www.st.com

Contents

STV8247, STV8257, STV8277, STV8287

Contents

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1

1.2

STV82x7 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1.1

Core features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Software information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.1

1.2.2

Device input modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.3

Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

System clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Digital demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.1

3.2

Sound IF signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Demodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Digital signal processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

5.10

5.11

5.12

5.13

5.14

Back-end processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Audio processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ST WideSurround . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

ST OmniSurround . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Dolby Pro Logic II decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Bass management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bass management configuration 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bass management configuration 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Bass management configuration 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Bass management configuration 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Bass management configuration 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SRS WOW and TruSurround XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SRS TruSurround . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SRS WOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.14.1

SRS 3D Mono/Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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STV8247, STV8257, STV8277, STV8287

5.14.2

5.14.3

Contents

SRS Dialog Clarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SRS TruBass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.15

5.16

5.17

5.18

5.19

5.20

5.21

5.22

5.23

5.24

SVC (smart volume control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ST Dynamic Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5-band audio equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Bass/Treble control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Automatic loudness control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Volume/Balance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Soft mute control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Internal audio/video delay (lip sync) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Analog audio matrix (input/output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

I²S interface (input/output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.1

6.2

I²S inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

I²S output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

S/PDIF input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Power supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.1

8.2

Standby mode (loop-through mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Power on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Additional controls and flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.1

9.2

Headphone detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

IRQ generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.2.1

I²C bus expander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

STV82x7 reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

I²C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

11.1

11.2

11.3

11.4

I²C address and protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Start-up and configuration change procedure . . . . . . . . . . . . . . . . . . . . . 44

Process flow during patch loading and DSP initialization . . . . . . . . . . . . . 47

Input configuration change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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Contents

STV8247, STV8257, STV8277, STV8287

12.1

12.2

12.3

12.4

12.5

12.6

12.7

12.8

12.9

I²C register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

STV82x7 general control registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Clocking 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Demodulator channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Demodulator channel 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

NICAM registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Stereo mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Analog control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

12.10 DSP control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

12.11 Automatic standard recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

12.12 Audio preprocessing and selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

12.13 Matrixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

12.14 Audio processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

12.15 5-band equalizer/bass-treble for loudspeakers . . . . . . . . . . . . . . . . . . . 120

12.16 Headphone bass-treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

12.17 Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

12.18 Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

12.19 Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

12.20 S/PDIF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

12.21 Headphone configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

12.22 DAC control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

12.23 AutoStandard coefficients settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

System clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Input/Output groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

17.1

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Doc ID 10163 Rev 3

4/167

STV8237/T Related Products

	STV8237/T	STV8247DS/T	STV8217/T
Description	SPECIALTY CONSUMER CIRCUIT, PQFP80, PLASTIC, QFP-80	IC,AUDIO PROCESSOR,QFP,80PIN,PLASTIC	SPECIALTY CONSUMER CIRCUIT, PQFP80, PLASTIC, QFP-80
Reach Compliance Code	compliant	compliant	compliant
Commercial integrated circuit types	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT
JESD-30 code	S-PQFP-G80	S-PQFP-G80	S-PQFP-G80
Number of terminals	80	80	80
Maximum operating temperature	70 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LQFP	QFP	LQFP
Encapsulate equivalent code	QFP80,.64SQ	QFP80,.64SQ	QFP80,.64SQ
Package shape	SQUARE	SQUARE	SQUARE
Package form	FLATPACK, LOW PROFILE	FLATPACK	FLATPACK, LOW PROFILE
power supply	1.8,3.3,8 V	1.8,3.3, 8 V	1.8,3.3,8 V
Certification status	Not Qualified	Not Qualified	Not Qualified
surface mount	YES	YES	YES
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.635 mm	0.65 mm
Terminal location	QUAD	QUAD	QUAD
Parts packaging code	QFP	-	QFP
package instruction	PLASTIC, QFP-80	-	LQFP, QFP80,.64SQ
Contacts	80	-	80
Is Samacsys	N	N	-
Other features	IT ALSO REQUIRES 3.13V TO 3.47V SUPPLY	-	IT ALSO REQUIRES 3.13V TO 3.47V SUPPLY
length	14 mm	-	14 mm
Number of functions	1	-	1
Maximum seat height	1.6 mm	-	1.6 mm
Maximum supply voltage (Vsup)	1.9 V	-	1.9 V
Minimum supply voltage (Vsup)	1.7 V	-	1.7 V
width	14 mm	-	14 mm
Base Number Matches	1	1	-

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