STV8287D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STV8287D

Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

STMicroelectronics 

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STV82x7

5 Analog Audio Matrix (In / Out)

Analog Audio Matrix (In / Out)

The analog part of the audio matrix can be divided into two parts: the SCART input matrix and the

SCART output matrix.

Figure 23: SCART Input Matrix

S1in

S2in

S3in

S4in

MONO_in

2

Select

Audio ADC

Digital

Matrix

The SCART input matrix is an input for the digital matrix (after the ADC) which select which source

will be sent to the DSP.

Figure 24: SCART1/2/3 Output Matrix

S1in

S2in

S3in

S4in

Stereo DAC

MONO_in

2

Soft

mute

Select or Mute

S1out

The SCART output matrix selects the sound to output, which can be directly a SCART input or the

output of the DSP. A mute function is provided to switch off the outputs.

A soft-mute function is provided to avoid all spurious sounds when switching from one position to

another position.

The SCART 2 and 3 output matrices have the same functions as the SCART 1 output matrix.

The particularity of the matrix is to accept input signal of 2 VRMS and to have the capability to output

such level. In this case, the power supply must be 8 V.

The Mono audio input is able to accept signals with a 0.5 VRMS amplitude.

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