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STV8207 数据表(PDF) 24 Page - STMicroelectronics |
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STV8207 数据表(HTML) 24 Page - STMicroelectronics |
24 / 149 page Dedicated Digital Signal Processor (DSP) STV82x7 24/149 4 Dedicated Digital Signal Processor (DSP) 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 DC FM Channel1 FM Channel2 NICAM L De-emphasis Prescale Dematrix Autostandard FM FM FM Removal Prescale I²S I2S in 1 I2S in 2 I2S in 3 DC Prescale NICAM Removal DC Prescale SCART Removal NICAM R Dematrix NICAM SCART L SCART R SRC X2/X4 “I2S” Input Mode “Demod + SCART” or “SCART only” Input Modes LS 2 HP 2 SCART 2 LS 2 to 6 HP 2 SCART 2 (L and R) (L and R) (L and R) (L,R,C,LFE,Ls,Rs) (L and R) (L and R) De-emphasis NICAM |
类似零件编号 - STV8207 |
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类似说明 - STV8207 |
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