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CS4923 データシート(PDF) 38 Page - Cirrus Logic |
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CS4923 データシート(HTML) 38 Page - Cirrus Logic |
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38 / 56 page ![]() AD6 AD4 AD5 AD3 AD2 AD1 AD0 R/W D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 SCCLK SCDIN INTREQ Note 1 SPI Write Functional Timing Note 2 SPI Read Functional Timing CS AD6 AD4 AD5 AD3 AD2 AD1 AD0 R/W SCCLK SCDIN CS D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 SCDOUT Figure 19. SPI Timing Notes: 1. INTREQ is guaranteed to stay low until the rising edge of SCCLK for the second to last bit of the last byte to be transferred out of the CS4923/4/5/6/7/8/9 2. INTREQ is guaranteed to stay high until the next rising edge of SCCLK at which point it may go low again if there is new data to be read. The condition of INTREQ going low at this point should be treated as a new read condition and a new start condition followed by an address byte should be sent |
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