參數(shù)資料
型號: AK7716VT
英文描述: Consumer IC
中文描述: 消費性IC
文件頁數(shù): 42/60頁
文件大?。?/td> 1171K
代理商: AK7716VT
[ASAHI KASEI]
[AK7716]
<M0057-E-01>
1999/09
- 42 -
7-2)
Read during reset phase
7-2-a) Control register data read (during reset phase)
To read data written into the control registers, input the command code and 16 bits of SCLK. After input command code, the data of D7 to
D1 outputs from SO in synchronization with the falling edge of SCLK. D0 is invalid, so please ignore this bit.
Data transfer procedure
Command code 70h,74h,78h,7Ch
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".
Then the data is 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
Command code input C1h ( 1 1 0 0 0 0 0 1 )
Read address input ( 0 0 0 0 0 0 0 A8)
(A7 . . . . A0)
Reading of PRAM data
WRQ
SCL
SI
CS
RDY
RESET
11000001
0000000 A8 A7 . . . A1 A0
SO
D31 . . . D0 D31 . . . D0
Reading of Control Register data
SCLK
SI
RESET
70h(Example) 74h (Example)
RQ
SO
D7 . . . D1
D7 . . . D1
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