STV8287D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STV8287D
STMicroelectronics
'STV8287D' PDF : 149 Pages View PDF
Dedicated Digital Signal Processor (DSP)
4 Dedicated Digital Signal Processor (DSP)
STV82x7
A dedicated Digital Signal Processor (DSP) takes charge of all audio processing features and the
low frequency signal processing features of the demodulator. The internal 24-bit architecture will
ensure a high quality signal treatment and an excellent dynamic.
4.1 Back-end Processing
The “back-end” processing corresponds to the low frequency signal processing (32 kHz or higher
frequencies) of the demodulator and other inputs (I²S, ADC).
Figure 11 shows a flowchart of the back-end processing tasks. However, the figure shows that the
processing is only a SINGLE SOURCE PROCESSING flow (no processing is possible with
“Demod + SCART” and I²S inputs simultaneously) and that the selection of a headphone output
restricts the loudspeakers configuration to 2+1 instead of 5+1.
Figure 11: Back-end Audio Processing
“Demod + SCART” or “SCART only” Input Modes
Autostandard
FM Channel1
FM Channel2
NICAM L
NICAM R
DC
Removal
FM
De-emphasis
FM
Prescale
FM
Dematrix
DC
Removal
NICAM
De-emphasis
NICAM
Prescale
NICAM
Dematrix
SCART L
SCART R
DC
Removal
“I2S” Input Mode
I2S in 1
I2S in 2
I2S in 3
SRC X2/X4
SCART
Prescale
I²S
Prescale
2 LS
(L and R)
2 HP
(L and R)
2 SCART
(L and R)
2 to 6 LS
(L,R,C,LFE,Ls,Rs)
2 HP
(L and R)
2 SCART
(L and R)
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