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CS4382 Arkusz danych(PDF) 11 Page - Cirrus Logic |
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CS4382 Arkusz danych(HTML) 11 Page - Cirrus Logic |
11 / 42 page DS514F2 11 CS4382 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C® FORMAT (For KQZ TA = -10°C to +70°C; VLC = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLC, CL =30pF) Notes: 19. Data must be held for sufficient time to bridge the transition time, tfc, of SCL. 20. The acknowledge delay is based on MCLK and can limit the maximum transaction speed. 21. for Single-Speed Mode, for Double-Speed Mode, for Quad-Speed Mode. Parameter Symbol Min Max Unit 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 19) thdd 0- µs SDA Setup time to SCL Rising tsud 250 - ns Rise Time of SCL and SDA trc, trc -1 µs Fall Time SCL and SDA tfc, tfc - 300 ns Setup Time for Stop Condition tsusp 4.7 - µs Acknowledge Delay from SCL Falling (Note 20) tack - (Note 21) ns 15 256 Fs × --------------------- 15 128 Fs × --------------------- 15 64 Fs × ------------------ SDA SCL 001100 ADDR AD0 R/W Start ACK DATA 1-8 ACK DATA 1-8 ACK Stop Note: If operation is a write, this byte contains the Memory Address Pointer, MAP. Note 1 Figure 3. Control Port Timing - I²C Format |
Podobny numer części - CS4382_08 |
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Podobny opis - CS4382_08 |
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