190
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Timing with noise canceller function enabled
When input capture noise cancelling is enabled, the external input capture signal is routed via
the noise canceller circuit, so the internal signals are delayed from the input edge by five
sampling clock cycles. Figure 9.10 shows the timing.
External input
capture signal
Sampling clock
Noise canceller
circuit output
Internal input
capture signal R
Figure 9.10 Input Capture Signal Timing (Noise Canceller Function Enabled)
Timing of Input Capture: Figure 9.11 shows the input capture timing in relation to the internal
input capture signal.
Internal input
capture signal
TCG
Input capture
register
N –1
N
N +1
H'XX
N
Figure 9.11 Input Capture Timing