STV8206 datasheet(25/97 Pages) STMICROELECTRONICS

25 / 97 page

25/97

STV82x6

Audio Matrices

In addition to the sound carrier source (SIF), the STV82x6 accepts up to three analog stereo audio

inputs (2 VRMS SCART compatible) and one analog mono audio input (0.5 VRMS). These different

sources can go back out through four analog stereo audio outputs which are Loudspeaker +

Subwoofer and Headphone (1 VRMS) and two compatible SCART audio outputs (2 VRMS). An extra

digital stereo output (I²S compatible) is available for interfacing with a Dolby Pro Logic Decoder or

an external Digital-to-Analog Converter (DAC).

Figure 15: Audio Matrix Block Diagram

SCART1 In

SCART2 In

SCART3 In

Mono In

I²S

SCART1 Out

SCART2 Out

A/D

D/A

Lang.

Select

CH_SEL (49h)

Low Noise

Mute

SW1

SW2

SW3

SW4

SW6

SW7

D/A

Low Noise

Mute

SW5

D/A

Low Noise

Switch

Demodulator

Level

Prescaling

CH_LANG (4Ah)

CH_SEL (49h)

CH_LANG (4Ah)

CH_SEL (49h)

CH_LANG (4Ah)

CH_SEL (49h)

CH_LANG (4Ah)

ANA_SCART (06h)

CH_MX (48h)

Demod.

Matrix

CH_MX (48h)

SIF

MONOIN

(AI1L, AI1R)

(AI2L, AI2R)

(AI3L, AI3R)

(AO1L, AO1R)

(AO2L, AO2R)

SDO

(LSL, LSR)

(HPL, HPR)

Lang.

Select

Audio

DSP

D/A

Lang.

Select

Audio

DSP

Low Noise

Mute

Lang.

Select

SCART

Matrix

Low Noise

Mute

Switch

Low Noise

Mute

Switch

I²S

Matrix

CH_MX (48h)

SDI

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