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STV82X8 데이터시트(PDF) 35 Page - STMicroelectronics

부품명 STV82X8
상세설명  Digital Audio Decoder / Processor for BTSC Television/Video Recorders
PDF  157 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV82X8 데이터시트(HTML) 35 Page - STMicroelectronics

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STV82x8
Analog Audio Matrix (Input / Output)
5
Analog Audio Matrix (Input / Output)
The analog part of the audio matrix can be divided into two parts: the SCART input matrix and the
SCART output 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.
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.
Figure 23: SCART Input Matrix
Figure 24: SCART1/2/3 Output Matrix
S1in
S2in
S3in
MONO_in
2
Audio ADC
Select
Digital
Matrix
S4in
S5in*
*TQFP100 package only
S1in
S2in
S3in
Stereo DAC
2
S1out
Select or Mute
S4in
MONO_in
Soft
mute
S5in*
*TQFP100 only



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