Tpc Output Triggering By Input Capture; Usage Notes; Operation Of Tpc Output Pins; Note On Non-Overlapping Output - Hitachi H8/3035 Series Hardware Manual

9.3.5 TPC Output Triggering by Input Capture

TPC output can be triggered by ITU input capture as well as by compare match. If GRA
functions as an input capture register in the ITU channel selected in TPCR, TPC output will be
triggered by the input capture signal. Figure 9-8 shows the timing.
ø
TIOC pin
Input capture
signal
NDR
DR
Figure 9-8 TPC Output Triggering by Input Capture (Example)

9.4 Usage Notes

9.4.1 Operation of TPC Output Pins

TP to TP are multiplexed with ITU pin functions. When ITU output is enabled, the
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corresponding pins cannot be used for TPC output. The data transfer from NDR bits to DR bits
takes place, however, regardless of the usage of the pin.
Pin functions should be changed only under conditions in which the output trigger event will not
occur.

9.4.2 Note on Non-Overlapping Output

During non-overlapping operation, the transfer of NDR bit values to DR bits takes place as
follows.
1. NDR bits are always transferred to DR bits at compare match A.
2. At compare match B, NDR bits are transferred only if their value is 0. Bits are not transferred
if their value is 1.
Figure 9-9 illustrates the non-overlapping TPC output operation.
N
M N
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