STV8268FD View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV8268FD' PDF : 157 Pages View PDF
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.
Figure 23: SCART Input Matrix
S1in
S2in
S3in
S4in
S5in*
MONO_in
2
Select
Audio ADC
Digital
Matrix
*TQFP100 package only
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
S5in*
Stereo DAC
MONO_in
2
Soft
mute
S1out
Select or Mute *TQFP100 only
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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