AK7750 Datasheet, PDF (63/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
c) External Conditional Jump Code Write ( under RUN condition )
External conditional jump code writes are executed in 2 bytes/set data.
It is possible to input during in both reset and normal operation modes. Input data is set to each assigned
register at the rising edge of LCRCK.
RDY pin goes “L” after all data is transferred and it becomes “H” when the write operation is completed.
External jump code is 8-bits and when any bit of this code and any single bit of “1“ in the IFCON field
matches, a jump instruction is executed.
Write from microprocessor is inhibited until RDY becomes “H”.
Note) please be noted that phase of LRCLK is inverted in case of I2S compatible interface mode.
Data transfer procedure
c Command code
d Code data
C4h ( 1 1 0 0 0 1 0 0 )
(D7 D6 . . . . . A0)
S_RESET =H
SCLK
SI
SO
11000100 D7yyyyD0
RQ
LRCLK
RDY
max: 2LRCLK
L ch
R ch
max: 0.25LRCLK
External Conditional Jump Write Timing (during RUN)
[MS0296-E-00]
63
2005/03