Fujitsu FR81S User Manual
CHAPTER 17: PPG
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: PPG
FUJITSU SEMICONDUCTOR CONFIDENTIAL
64
5.14. Interrupt
The interrupt is explained.
The interrupt request is generated for the following either.
⋅
Software trigger, External trigger, and GATE signal trigger
⋅
Counter borrow occurrence (The set cycle is matched)
⋅
Match of duty
⋅
Match of Timing Point Capture value
⋅
PPG communication data register Empty flag
The generated interrupt factor is different depending on the operation mode of PPG.
Table 5-1 Correspondence of Operation Mode and Interrupt Request
Interrupt request
PWM operation and
one-shot operation
Timing Point
Capture mode
PPG
communication
mode
Software trigger, External
trigger, and GATE signal
trigger
Counter borrow occurrence
Match of counter and duty
value
Counter borrow occurrence,
or match of counter and duty
value
Match of Timing Point
Capture value
PPG communication data
register Empty factor
Table 5-2 shows the register related to the interrupt of each operation mode.
Table 5-2 Interrupt Setting of Each Operation Mode
Interrupt setting
Setting of
interrupt factor Interrupt flag
Interrupt
request enable
Clear of
interrupt
request
PWM operation,
One shot operation
PCNn.IRS[1:0]
=00 to 11
PCNn.IRQF=1
PCNn.IREN=1
"0" is written in
PCN.IRQF.
Timing point capture
mode
PCN2n.IRS[2:0]
=000 to 100
PCNn.IRQF=1
PCNn.IREN=1
"0" is written in
PCN.IRQF.
PPG communication
mode
PCN2n.IRS[2:0]
=101 to 111
PCN2n.REMP=1
or
PSC2n.SREMP=1
PCNn.IREN=1
"0" is written in
PCN.IRQF.
(n=0 to 47)
PCN: PPG control register
PCN2: PPG control register2
MB91520 Series
MN705-00010-1v0-E
605