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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STA680D датащи(PDF) 30 Page - STMicroelectronics |
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STA680D датащи(HTML) 30 Page - STMicroelectronics |
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30 / 48 page  Digital I/O and memory interfaces STA680 30/48 DS5877 Rev 13 Figure 9. BBI waveforms and timings 5.3 Base-band I2S interface frequency diversity When the STA680 is paired with the TDA7786 or any tuner of ST STAR family it can benefit from the supported base-band interface frequency diversity that allows to improve the EMI robustness of the system. The frequency diversity technique allows the base-band data-rate to be varied at run-time depending on the frequency of the tuned station, thus moving the intrinsic radiation of the BBI digital lines away from the signal of interest. Table 7. BBI timing values Symbol Parameter Working Rate Unit Fws Word Strobe 650 675 744.1875 912 kHz Fbck,split Bit clock in SPLIT mode 16 x Fws kHz Fbck,mux Bit clock in MUX mode 32 x Fws kHz Fbck,afe Bit clock in AFE mode 32 x Fws kHz Th Data hold time 4 ns Ts Data setup time 8 ns |
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