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Motore di ricerca datesheet componenti elettronici |
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STA328 Scheda tecnica(PDF) 2 Page - STMicroelectronics |
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STA328 Scheda tecnica(HTML) 2 Page - STMicroelectronics |
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2 / 41 page  STA328 2/41 and bass/treble tone control. Automodes™ enable a time-to-market advantage by substantially reducing the amount of software development needed for certain functions. This includes Auto Volume loudness, preset volume curves, preset EQ settings, etc. New advanced AM radio inerference reduction modes. The serial audio data input interface accepts all possible formats, including the popular I2S format. Three channels of DDX® processing are provided. This high quality conversion from PCM audio to DDX's patented tri-state PWM switching waveform provides over 100dB SNR and dynamic range. 3 ORDERING INFORMATION Figure 2. Block Diagram Figure 3. Channel Signal Flow Diagram through the Digital Core 3.1 EQ Processing Two channels of input data (re-sampled if necessary) at 96 kHz are provided to the EQ processing block. In this block, upto 4 user-defined Biquads can be appplied to each of the two channels. Pre-scaling, dc-blocking high-pass, de-emphasis, bass, and tone control filters can also be applied based on various configuration parameter settings. The entire EQ block can be bypassed for all channels simulatneously by setting the DSPB bit to '1'. And the CxEQBP bits can be used to bypass the EQ functionality on a per channel basis. Figure below shows the internal signal flow through the EQ block. Serial Data Input, Channel Mapping & Resampling DDX ® Processing Quad Half-Bridge Power Stage OUT1A OUT1B OUT2A OUT2B LRCKI SDI_12 SDA SCL PLL CLK EAPD BICKI FAULT TWARN Power-Down I 2C System Contro l Audio EQ, Mix, Crossver, Volume, Limiter Processing System Timing DDX-SPIRIT Serial Data Input, Channel Mapping & Resampling DDX ® Processing Quad Half-Bridge Power Stage OUT1A OUT1B OUT2A OUT2B LRCKI SDI_12 SDA SCL PLL CLK EAPD BICKI FAULT TWARN Power-Down I 2C System Contro l Audio EQ, Mix, Crossver, Volume, Limiter Processing System Timing DDX-SPIRIT Channel Mapping Re-sampling EQ Processing Mix Volume Limiter 4X Interp DDX® I 2S Input DDX Output Crossover Filter |
Codice articolo simile - STA328 |
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Descrizione simile - STA328 |
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