4.5.4.2 One Pulse-per-second Signal Generation

The device can provide a one pulse-per-second (PPS) clock, synchronized to the time stamp clock. This signal can be provided on pin DIOA4 when selected in the register PADCTRL. The One Pulse-per-Second Control Register (PPSCTL) is used to configure the pulse width and enable and disable generation of the signal. The pulse width cannot be changed while enabled; disable signal generation and wait for the signal to stop before changing the pulse width. When the signal has been disabled, the output will continue to be driven low until the end of the second. At this time, the output will stop and the PPSDONE bit in the SEVSTS register will be set.