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UPD720122 датащи(PDF) 71 Page - NEC |
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UPD720122 датащи(HTML) 71 Page - NEC |
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71 / 82 page ![]() Data Sheet S16685EJ2V0DS 71 µPD720122 (4) USB connection sequence on USB 2.0 bus Figure 2-13. USB Connection Sequence on USB 2.0 Bus tHDS tSCA tCKO tCKI tSCS tFCA Chirp K device out Reversion to high-speed mode FS J Pull-up is active. T0 USB bus USBRST SPMODE tSSC tCSO tCSI tRHA tFSC Chirp state from host/hub Reset Complete KJ K J K J K J (5) Bus reset sequence (1) The bus reset sequence when connected to a USB 1.1 bus is shown below. Figure 2-14. Bus Reset Sequence (1) tSPD tSCA tCKO tCKI tSCS tDRS Chirp K device out Reversion to full-speed mode FS J Pull-up is inactive. T0 USB bus USBRST SPMODE tFCA tCSR High-speed packet |
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