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CS5366 数据表(PDF) 16 Page - Cirrus Logic |
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CS5366 数据表(HTML) 16 Page - Cirrus Logic |
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16 / 41 page ![]() 16 DS626F3 CS5366 SERIAL AUDIO INTERFACE - TDM TIMING The serial audio port is a three-pin interface consisting of SCLK, LRCK and SDOUT. Logic "0" = GND = 0 V; Logic "1" = VLS; CL = 20 pF, timing threshold is 50% of VLS. Notes: 1. TDM Quad-Speed Mode only specified to operate correctly at VLS ≥ 3.14 V. 2. Duty cycle of generated SCLK depends on duty cycle of received MCLK as specified under “System Clocking” on page 10. 3. CLKMODE functionality described in Section 4.6.3 "Master Mode Clock Dividers" on page 24. 4. In Slave Mode, the SCLK/LRCK ratio can be set according to preference; chip performance is guaran- teed only when using the ratios in Section 4.7 Master and Slave Clock Frequencies on page 25. Figure 4. TDM Timing Parameter Symbol Min Typ Max Unit Sample Rates Single-Speed Mode Double-Speed Mode Quad-Speed Mode1 - - - 2 54 108 - - - 54 108 216 kHz kHz kHz Master Mode SCLK Frequency SCLK Period 1/(256*216 kHz) SCLK Duty Cycle (Note 2) (CLKMODE = 0)(Note 3) (CLKMODE = 1)(Note 3) tPERIOD tHIGH1 tHIGH1 256*Fs 18 40 28 - - 50 33 256*Fs - 60 38 Hz ns % % FS setup before SCLK rising (Single-Speed Mode) FS setup before SCLK rising (Double-Speed Mode) FS setup before SCLK rising (Quad-Speed Mode) FS width in SCLK cycles tSETUP1 tSETUP1 tSETUP1 tHIGH2 20 18 5 128 - - - - - - - 128 ns ns ns - SDOUT setup before SCLK rising SDOUT hold after SCLK rising tSETUP2 tHOLD2 5 5 - - - - ns ns Slave Mode SCLK Frequency (Note 4) SCLK Period 1/(256*216 kHz) SCLK Duty Cycle tPERIOD tHIGH1 - 18 28 256*Fs - - - - 65 Hz ns % FS setup before SCLK rising (Single-Speed Mode) FS setup before SCLK rising (Double-Speed Mode) FS setup before SCLK rising (Quad-Speed Mode) FS width in SCLK cycles tSETUP1 tSETUP1 tSETUP1 tHIGH2 20 20 10 1 - - - - - - - 244 ns ns ns - SDOUT setup before SCLK rising SDOUT hold after SCLK rising tSETUP2 tHOLD2 5 5 - - - - ns ns FS SDOUT SCLK data data t HOLD2 t SETUP2 t SETUP1 new frame data t PERIOD t HIGH1 t HIGH2 |
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