CLKINSTOPPED – Input Clock Status

UltraScale Architecture Clocking Resources User Guide (UG572)

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1.10.2 English

This is a status pin indicating that the input clock has stopped. This signal is asserted within two CLKFBOUT clock cycles of clock stoppage. The signal is deasserted after the clock has restarted and LOCKED is achieved, or the clock is switched to the alternate clock input and the MMCM has re-locked.