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21-21
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
PLAY & STOP
Figure 21.4.15.2 shows Sound PLAY-STOP Flow.
Figure 21.4.15.2 Sound PLAY-STOP Flow
“
So
und
St
ar
t”
co
m
m
and
Set HWPCMDTRG.HWP0TRG
Set
“
Sound Start
”
command
-
COMMAND_x: "
Sound Start
"
-
SENTENCE_x,
-
VOLUME_x,
-
REPEAT_x
-
SPEED_0(only CH0)
in Sound Function Register(See Table 21.4.14.1)
Check STATE_x = "sp_state_play", if necessary
Cortex Set HW Processor
Wait HWPINTF.HWP0IF = 1
HW Processor interrupts to cortex
Wait STATE_x = "sp_state_idle"
Wait STATUS.READY = sp_status_ready
“
So
und
St
op
”
co
m
m
and
Wait HWPINTF.HWP0IF = 1
HW Processor interrupts to cortex
Check STATE_x = "sp_state_idle"
Set
“
Sound Sto
p”
COMMAND
-
COMMAND_x:
“
STOP_xxx
”
in Sound Play Function Registers(See Table 21.4.14.1)
Set HWPCMDTRG.HWP0TRG
Cortex Set HW Processor
Wait STATE_x = "sp_state_play"
Wait STATUS.READY = sp_status_ready
Summary of Contents for S1C31D50
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