New Contributor
Regular ContributorHi,
It is recommended to use dedicated hardware to perform clock multiplexing when it is available, instead of using multiplexing logic. For example, you can use the clock-switchover feature or clock control block available. These dedicated hardware blocks ensure that you use global low-skew routing lines and avoid any possible hold time problems on the device due to logic delay on the clock line.
Thanks.
New ContributorThanks YY. I understand that it is recommended to use dedicated blocks. Unfortunately I need to multiplex a clock signal coming from a non dedicated external pin so I cannot use the dedicated block. My question is if it is safe to use a logic multiplexer to do so. Please note that I do not intend to switch the multiplexer input when the clock is enabled.
