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CDB4391 데이터시트(PDF) 10 Page - Cirrus Logic |
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CDB4391 데이터시트(HTML) 10 Page - Cirrus Logic |
10 / 38 page CS4391 10 DS335PP4 SWITCHING CHARACTERISTICS - I2C CONTROL PORT (TA = 25° C; VL = 5.5 to 1.8 Volts; Inputs: logic 0 = AGND, logic 1 = VL, CL = 30 pF) Notes: 23. Data must be held for sufficient time to bridge the 300 ns transition time of SCL. Parameter Symbol Min Max Unit I2C® Mode SCL Clock Frequency fscl -100 KHz RST 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 23) thdd 0- µs SDA Setup time to SCL Rising tsud 250 - ns Rise Time of Both SDA and SCL Lines tr -1 µs Fall Time of Both SDA and SCL Lines tf - 300 ns Setup Time for Stop Condition tsusp 4.7 - µs t buf t hdst t hdst t lo w t r t f t hdd t high t sud t sust t susp Stop S tart Sta rt Stop Re pe ate d SD A SC L t irs RS T Figure 3. I 2C Control Port Timing |
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