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TUSB3200CPAH 数据表(PDF) 45 Page - Texas Instruments |
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TUSB3200CPAH 数据表(HTML) 45 Page - Texas Instruments |
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45 / 93 page ![]() 3–5 3.4.4 CODEC Port Interface Signals (I2S Modes) Over Recommended Operating Conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS fSCLK Frequency, SCLK CL = 50 pF (32)FS (64)FS MHz tcyc Cycle time, SCLK CL = 50 pF, See Note 1 1/(64)FS 1/(32)FS ns tpd Propagation delay, SCLK falling edge to LRCLK and SDOUT CL = 50 pF 15 ns tsu Setup time, SDIN to SCLK rising edge 10 ns th Hold time, SDIN from SCLK rising edge 10 ns NOTE 1: Worst case duty cycle is 45/55. tsu th SCLK LRCLK, SD_OUT SD_IN tpd tcyc Figure 3–5. I2S Mode Timing Waveforms 3.4.5 CODEC Port Interface Signals (General Purpose Mode) Over Recommended Operating Conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS fCSCLK Frequency, CSCLK CL = 50 pF 0.125 25 MHz tcyc Cycle time, CSCLK CL = 50 pF, See Note 2 0.040 8 µs tpd Propagation delay, CSCLK to CSYNC, CDATO, CSCHNE and CRESET CL = 50 pF 15 ns tsu Setup time, CDATI to CSCLK 10 ns th Hold time, CDATI from CSCLK 10 ns NOTE 2: The timing waveforms in Figure 3-6 show the CSYNC, CDATO, CSCHNE and CRESET signals generated with the rising edge of the clock and the CDATI signal sampled with the falling edge of the clock. The edge of the clock used is programmable. However, the timing characteristics are the same regardless of which edge of the clock is used. tsu th CSCLK CSYNC, CDATO, CSCHNE, CRESET CDATI tpd tcyc Figure 3–6. General-Purpose Mode Timing Waveforms |
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