ML22Q573-NNNMB Datasheet, PDF (36/66 Pages) List of Unclassifed Manufacturers – 4-Channel Mixing Speech Synthesis LSI

FEDL2257X-05
ML22Q573/ML2257X
5. PDWN command
x command
00100000
The PDWN command is used to shift the ML22Q573/ML2257X from a command waiting state to the power
down state. However, since every setting will be initialized after entering the power down state, initial settings
need to be set after power-up. This command is invalid during playback.
To resume playback after the ML22Q573/ML2257X has shifted to the power down state, first input the PUP and
AMODE commands and then input the PLAY command.
CSB
SCK
SI
CBUSYB
NCR
(internal)
BUSYB
(internal)
XT•XTB
Status
Oscillating
Awaiting command
Oscillation
stopped
Command is being
processed
Power down
Oscillation stops after a lapse of command processing time after the PDWN command is input. The regulator
stops operation after a lapse of command processing time after the PDWN command is input. At this time, the
SPM output of the speaker amplifier goes into a Hi-Z state to prevent generation of pop noise.
Initial stauts at reset input and status during power down
The status of each output pin is as follows:
Analog output pin
VDDL
VDDR
SG
SPM
SPP
State
DGND
DGND
DGND
Hi-Z
DGND
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