AK7744VT Datasheet, PDF (37/50 Pages) Asahi Kasei Microsystems – 24bit 3ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7744]
7-2-b) Program RAM read (during reset phase)
To read data written into PRAM, input the command code and the address you want to read out. After that,
set SI to "H" and SCLK to "L". The data is then clocked out from SO in synchronization with the falling edge of
SCLK. (Ignore the RDY operation that will occur in this case.)
If there are continuous addresses to be read, repeat the above procedure starting from the step where SI is set to "H".
Data transfer procedure
cCommand code input C1h ( 1 1 0 0 0 0 0 1 )
dRead address input MSB ( 0 0 0 0 0 0 0 A8)
eRead address input LSB (A7 . . . . A0)
S_RESET
RQ
SCLK
SI
SO
RDY
11000001 0000000 A8 A7 **** A1 A0
D31 **** D0 D31 **** D0
Reading of PRAM data
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2002/10