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CS5345 데이터시트(PDF) 20 Page - Cirrus Logic |
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CS5345 데이터시트(HTML) 20 Page - Cirrus Logic |
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20 / 41 page ![]() 20 DS658F2 CS5345 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT Inputs: Logic 0 = DGND = AGND = 0 V, Logic 1 = VLC, CL =30pF. 19. Data must be held for sufficient time to bridge the transition time, tfc, of SCL. 20. Guaranteed by design. Parameter Symbol Min Max Unit SCL Clock Frequency fscl - 100 kHz RESET Rising Edge to Start tirs 500 - ns Bus Free Time Between Transmissions tbuf 4.7 - µs Start Condition Hold Time (prior to first clock pulse) thdst 4.0 - µs Clock Low time tlow 4.7 - µs Clock High Time thigh 4.0 - µs Setup Time for Repeated Start Condition tsust 4.7 - µs SDA Hold Time from SCL Falling (Note 19) thdd 0- µs SDA Setup time to SCL Rising tsud 250 - ns Rise Time of SCL and SDA (Note 20) trc, trd -1 µs Fall Time SCL and SDA (Note 20) tfc, tfd - 300 ns Setup Time for Stop Condition tsusp 4.7 - µs Acknowledge Delay from SCL Falling tack 300 1000 ns t buf t hdst t low t hdd t high t sud Stop Start SDA SC L t irs RS T t hdst t rc t fc t sust t susp Start Stop R epe ate d t rd t fd t ack Figure 5. Control Port Timing - I²C Format |
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