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TDA7786 データシート(PDF) 14 Page - STMicroelectronics |
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TDA7786 データシート(HTML) 14 Page - STMicroelectronics |
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14 / 54 page  Function description TDA7786, TDA7786M 14/54 DocID026122 Rev 5 Figure 3. Crystal oscillator block diagram 2.11 DSP and digital hardware accelerators The TDA7786x embeds two DSP cores for high computational power and achievable customization. The DSP cores, in combination with the hardware accelerators, take care of all the tuner digital signal processing. The main program is fixed in ROM. Control parameters are copied to RAM and are accessible and modifiable there, thus allowing a parametric performance optimization. The operations performed by the DSP cores and HW accelerators are: digital down-conversion of IF bandwidth selection with variable controlled bandwidth FM and AM noise blanking FM/AM demodulation with soft-mute, high-cut, weak signal processing and quality detection FM stereo decoding with stereo-blend RDS demodulation including error correction and block synchronization with generation of an RDS interrupt for the main µP Autonomous control of RDS-AF tests Self-alignment of pre-selection tuning |
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