AK7750 Datasheet, PDF (53/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
d) Offset RAM write (during reset phase)
Offset RAM Writes (at reset) are done by writing a command code first, then address and 3 bytes/set data.
After the data is transferred, the RDY pin becomes “L” and after writing Offset RAM is completed, it
becomes “H” and next data can be ready to input.
Data transfer procedure
c Command code 90h
d Address
e Data
f Data
g Data
(1 0
(0 0
(0 0
(0 0
(D7 .
01
A5 A4
00
00
..
0 0 0 0)
.. . . A0 )
0 0 0 0)
D11 . . D8 )
. . . D0 )
S_RESET
RQ
SCLK
SI
RDY
SO
10010000
00A5****A0
00000000 000D12**** D8 D7****D1D0
Input of data into OFRAM
[MS0296-E-00]
53
2005/03