To ensure safe timing on paths with clocks driven by parallel BUFGCE_DIV cells
with a BUFGCE_DIVIDE property set to a value greater than 1 on both, both buffers
<buffer>
and <buffer>
must use the same enable signal (CE
) and the same clear signal (CLR
). The
clear signal must not be connected to power or ground. Otherwise, the divided clock
might become phase-shifted to one another in hardware. It is recommended to use the safe
clock startup reset circuitry to reset both BUFGCE_DIV buffers at the same time.