AK7735EQ Datasheet, PDF (84/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

[AK7735]
4-3. External Conditional Jump
External Conditional Jump Code Writing
(1) COMMAND
0xF4 (DSP1) / 0xF5 (DSP2)
(2) Address0
00000000
(3) Address1
00000000
(4) DATA
D7~D0
An External Conditional Jump code can be input during both DSP Reset and RUN. Input data is set to
the designated register on the rising edge of LRCK assigned to the DSP. The RDY pin changes to “L”
when the command code is transferred, and it changes to “H” when write operations are completed.
This Jump code is reset to 0 by setting the PDN pin to “L”, but it is not reset by DSP reset or Clock reset.
A DSP instruction setting is necessary when using external conditional jump code.
SCLK
SI
CSN
RDY
don’tcare
(L/H)
F4H / F5H
00H
00H
D7…D0
don’tcare
(L/H)
Figure 60. External Conditional Jump Timing (SPI)
016014707-E-00
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2016/12