NEC PD78052 - PPG Output Operations; Control Register Settings for PPG Output Operation

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CHAPTER 8 16-BIT TIMER/EVENT COUNTER
TOC0 110/10/11000
TOE0
TOC01LVR0LVS0
Inversion of output on match of TM0 and CR00
TOC04OSPEOSPT
TO0 Output Enabled
Specified TO0 output F/F initial value
Inversion of output on match of TM0 and CR01
One-shot pulse output disabled
CRC0 0x000000
CRC00CRC01CRC02
CR00 set as compare register
CR01 set as compare register
TMC0 00110000
OVF0
TMC01TMC02TMC03
Clear & start on match of TM0 and CR00
8.5.3 PPG output operations
Setting the 16-bit timer mode control register (TMC0) and capture/compare control register 0 (CRC0) as shown
in Figure 8-16 allows operation as PPG (Programmable Pulse Generator) output.
In the PPG output operation, square waves are output from the TO0/P30 pin with the pulse width and the cycle
that correspond to the count values set beforehand in 16-bit capture/compare register 01 (CR01) and in 16-bit capture/
compare register 00 (CR00), respectively.
Figure 8-16. Control Register Settings for PPG Output Operation
(a) 16-bit timer mode control register (TMC0)
(b) Capture/compare control register 0 (CRC0)
(c) 16-bit timer output control register (TOC0)
Caution Values in the following range should be set in CR00 and CR01:
0000H ≤ CR01 < CR00 ≤ FFFFH
Remark × : Don't care