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CS42436 数据表(PDF) 24 Page - Cirrus Logic |
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CS42436 数据表(HTML) 24 Page - Cirrus Logic |
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24 / 61 page ![]() 24 DS647F2 CS42436 SWITCHING SPECIFICATIONS - CONTROL PORT - SPI FORMAT (VLC = 1.8 V - 5.0 V, VLS = VD = 3.3 V, VA = 5.0 V; Inputs: Logic 0 = DGND, Logic 1 = VLC, CDOUT CL =30pF) Notes: 23. Data must be held for sufficient time to bridge the transition time of CCLK. 24. For fsck <1 MHz. Parameter Symbol Min Max Units CCLK Clock Frequency fsck 06.0 MHz RST Rising Edge to CS Falling tsrs 20 - ns CS Falling to CCLK Edge tcss 20 - ns CS High Time Between Transmissions tcsh 1.0 - μs CCLK Low Time tscl 66 - ns CCLK High Time tsch 66 - ns CDIN to CCLK Rising Setup Time tdsu 40 - ns CCLK Rising to DATA Hold Time (Note 23) tdh 15 - ns CCLK Falling to CDOUT Stable tpd -50 ns Rise Time of CDOUT tr1 -25 ns Fall Time of CDOUT tf1 -25 ns Rise Time of CCLK and CDIN (Note 24) tr2 - 100 ns Fall Time of CCLK and CDIN (Note 24) tf2 - 100 ns CS CCLK CDIN CDOUT RST t srs t scl t sch t css t r2 t f2 t csh t dsu t dh MSB MSB t pd Figure 8. Control Port Timing - SPI Format |
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