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CS4922 데이터시트(PDF) 6 Page - Cirrus Logic |
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CS4922 데이터시트(HTML) 6 Page - Cirrus Logic |
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6 / 34 page ![]() CS4922 6 SWITCHING CHARACTERISTICS - CLOCKS (T A = 25 °C; VA+, VD+ = 5V; Inputs: Logic 0 = DGND, Logic 1 = VD+, CL = 20pF) SWITCHING CHARACTERISTICS - EXTERNAL FLAGS (T A = 25 °C; VA+, VD+ = 5V; Inputs: Logic 0 = DGND, Logic 1 = VD+, CL = 20pF) Notes: 3. Assumes 2k Ω pull-up to 5V supply on XF1-XF4 pins. SWITCHING CHARACTERISTICS - PROGRAMMABLE INPUT/OUTPUT (T A = 25 °C; VA+, VD+ = 5V; Inputs: Logic 0 = DGND, Logic 1 = VD+, CL = 20pF) Parameter Symbol Min Typ Max Units Master Clock Frequency CLKIN 27 MHz Master Clock Duty Cycle CYCK 40 50 60 % Clock Output CLKOUT - - 256 Fs MHz Parameter Symbol Min Typ Max Units Rise time of XF1-XF4 (Note 3) trxf 200 ns Fall time of XF1-XF4 tfxf 100 ns Parameter Symbol Min Typ Max Units I_O = 0 Input Frequency fpio 350 kHz Risetime of PIO trpio 200 ns Fall time of PIO tfpio 200 ns I_O = 1 Rise time of PIO trpo 200 ns Fall time of PIO tfpo 200 ns |
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