Panasonic MN103001G/F01K - Manual (Page 273)

16-bit Timers
11-19
Fig. 11-6-1 Compare Register Operation (When Clock Source = IOCLK)
11.6.2 Capture Register Settings
In order to use either the timer 10 compare/capture A register or B register as a capture register, the following
settings must be made according to the procedure described below before timer 10 is initialized.
The explanation below refers only to the compare/capture A register, but similar settings would also need to be
made for the compare/capture B register.
(1) Set the compare/capture A register mode.
Set the TM10MDA register as follows:
TM10AO2,1,0 Don't care
TM10ACE 1: Capture operation enabled
TM10AEG Don't care (If "single-edge" is selected below, select either rising edge or falling edge
here.)
TM10AM1,0 10: Capture register (single-edge)
or
11: Capture register (dual-edge)
If "dual-edge" is selected, the setting in TM10AEG is ignored.
Once the timer 10 counting operation is enabled, the value in TM10BC is captured in TM10CA, and a compare/
capture A interrupt request is generated according to the timing shown in Fig. 11-6-2. (If the counting operation is
currently halted, the capture operation does not occur even if the selected edge is input to the pin.)
x'0000 x'0001
TM10CA value TM10CA value-1
IOCLK
Compare/capture A
interrupt request
TM10CA value-2
x'0002
TM10CA value TM10CA value-1
TM10BC value
(when TM10CAE = 0)
TM10CA value-2 TM10CA value+1 TM10CA value+2 TM10CA value+3
TM10BC value
(when TM10CAE = 1)