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CS43L22 датащи(PDF) 31 Page - Cirrus Logic |
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CS43L22 датащи(HTML) 31 Page - Cirrus Logic |
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31 / 68 page ![]() DS792F1 31 CS43L22 Confidential Draft 10/7/08 Note: *The marked sample rate values are not exact representations of the actual frame clock frequency They have been truncated to 4 decimal places. The exact value can be calculated by dividing the MCLK being used by the desired MCLK/LRCK ratio. Table 1. Serial Port Clocking 4.7 Digital Interface Formats The serial port operates in standard I²S, Left-Justified, Right-Justified, or DSP Mode digital interface formats with varying bit depths from 16 to 24. Data is clocked into the DAC on the rising edge of SCLK. 27.0000 8.0000 11 1 1 01 0 12.0000 11 0 1 01 0 24.0000 10 0 1 01 0 32.0000 01 1 1 01 0 *44.1176... 01 0 1110 48.0000 01 0 1 01 0 *11.0294... 11 0 1 11 0 *22.0588... 10 0 1110 16.0000 10 1 1 01 0 MCLK (MHz) Sample Rate, Fs (kHz) SPEED[1:0] (AUTO=’0’b) 32kGROUP VIDEOCLK RATIO[1:0] MCLKDIV2 LRCK SCLK MS B LS B MS B LS B AOUTA Le ft C h a n n e l R igh t C han ne l SDIN AOUTB MSB Figure 12. I²S Format LRCK SCLK MSB LSB MSB LSB Left Channel Right Channel SDIN MSB AOUTA AOUTB Figure 13. Left-Justified Format LRCK SC LK MS B LS B MS B LS B Le f t C han ne l R i g h t C h an n e l SD IN AO UTA AO UTB Audio W ord Length (AW L) Figure 14. Right-Justified Format\ |
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