CS492705-CL データシートの表示（PDF） - Cirrus Logic

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CS492705-CL

Multi-Channel Digital Audio Decoders

Cirrus Logic 

SCCLK

SCDIN

CS

SCCLK

SCDIN

SCDOUT

CS

INTREQ

AD6 AD5 AD4 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

SPI Write Functional Timing

AD6 AD5 AD4 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

SPI Read Functional Timing

Note 1

Note 2

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

Figure 19. SPI Timing

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