Sony CXD5602 User Manual page 110

Figure General Purpose Input/Output (GPIO)-24 shows the timing diagram.
(A) in the table means the time from when an external signal is asserted to when an event detection is held. The
time depends on debounce setting. (B) means the time from when the clearing of event detection is executed to
when the clearing is completed.
Table General Purpose Input/Output (GPIO)-31 Time Interval for a Signal to be Able to Detect an Event Again
Way of detecting Debounce
events
PMU_WAKE_TRI PMU_WAKE_TRI
G_INTDET* G_NOISECUTEN
0
0, 1: Instant Don't care
Detection (constantly without
elimination)
4 - 7: Edge Detection 0: No
1: Yes
(1*)
The time intervals in the table are those which are assumed when the following conditions are met.

After an interrupt is detected, SYSCPU or DSP instantly masks the interrupt and clears the event.

The clock frequency of one of SYSCPU or DSP that performs the processing described in the above
condition must be adequately higher than that of RTC Clock. This restriction does not apply to the other
that does not perform the processing.

When you execute the clearing of the event detection of (B), no clearing of other event detection is in
process.
(If you start a new clearing process when the former clearing of event detection is still in process, the
latter process must wait until the present process is completed. For this reason, the period of (B)
extends.)
(1*)
(A) Time of Detecting an
Event
(Cycle of RTC Clock)
2 ~ 3
2 ~ 3
4 ~ 5
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CXD5602 User Manual
(B) Time of Clearing (A) + (B)
Event Detection Time Interval between Event
(Cycle of RTC Clock) Detections again
(Cycle of RTC Clock)
7 ~ 8 10 ~ 11
7 ~ 8 10 ~ 11
7 ~ 8 12 ~ 13