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CS61880 датащи(PDF) 58 Page - Cirrus Logic |
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CS61880 датащи(HTML) 58 Page - Cirrus Logic |
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58 / 70 page ![]() CS61880 58 DS450PP3 19.7 Master Clock Switching Characteristics 19.8 Transmit Switching Characteristics 19.9 Receive Switching Characteristics Notes: 19. Output load capacitance = 50 pF. 20. MCLK is not active. Parameter Symbol Min. Typ Max Units MASTER CLOCK (MCLK) Master Clock Frequency MCLK 2.048 MHz Master Clock Tolerance - -100 +100 ppm Master Clock Duty Cycle - 40 50 60 % Parameter Symbol Min. Typ Max Units TCLK Frequency 1/tpw2 - 2.048 - MHz TPOS/TNEG Pulse Width (RZ Mode) 236 244 252 ns TCLK Tolerance (NRZ Mode) -50 - 50 PPM TCLK Duty Cycle tpwh2/tpw2 -- 90 % TCLK Pulse Width 20 - - ns TCLK Burst Rate Note 10 -- 20 MHz TPOS/TNEG to TCLK Falling Setup Time (NRZ Mode) tsu2 25 - - ns TCLK Falling to TPOS/TNEG Hold time (NRZ Mode) th2 25 - - ns TXOE Asserted Low to TX Driver HIGH-Z - - 1 µs TCLK Held Low to Driver HIGH-Z Note 20 812 20 µs Parameter Symbol Min. Typ Max Units RCLK Duty Cycle Note 10 40 50 60 % RCLK Pulse Width Note 10 196 244 328 ns RPOS/RNEG Pulse Width (RZ Mode) Note 10 200 244 300 ns RPOS/RNEG to RCLK rising setup time Note 10 tsu 200 244 ns RPOS/RNEG to RCLK hold time Note 10 th 200 244 ns RPOS/RNEG Output to RCLK Output (RZ Mode) Note 10 - - 10 ns Rise/Fall Time, RPOS, RNEG, RCLK, LOS outputs Note 19 tr, tf - - 85 ns |
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