Fujitsu FR81S User Manual
CHAPTER 17: PPG
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: PPG
FUJITSU SEMICONDUCTOR CONFIDENTIAL
58
PPG Continuousness Communication Operation
Figure 5-13 Example of PPG Communication Mode Operation (Continuousness
Communication)
Activation trigger
PHCSR
A
PLCSR
B
Down count value
(PTMR)
(PTMR)
A
D
C
PPG pin output
Normal polarity
Inverted polarity
CMD
(1) cycle setting
(5) PPG communication mode enable
(7) activation trigger
(8) Load
PHDUT
C
PLDUT
D
PCMDDT
B
(9) down count
(10) match
(11) inversion
(12) down count
(13) borrow
(14) clear
(15) Load
(16)
(23)
PCMDWD
1h (0001)
PPG output counter
1
0
1
0
1F
1F
Shift register
(PCMDDT)
(PCMDDT)
Register Empty flag
(REMP)
(REMP)
Shift register Empty flag
(SREMP)
(SREMP)
(2) duty setting
(3) PPG communication mode data width
(4) PPG communication mode data
(6) transmit for shift register
02h (0000_0010)
02h (0000_0010)
(17) PPG communication mode data
03h (0000_0011)
03h (0000_0011)
(18) borrow
(20) Load
(21)
※1
High format cycle
※2
Low format cycle
※1 : High format duty
※2 : Low format duty
※2 : Low format duty
(19) transmit for shift register
MB91520 Series
MN705-00010-1v0-E
599