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Altera_Forum's avatar
Altera_Forum
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14 years ago

Anyway to find output ports on a clock in tcl?

I'm delving into sdc files and tcl and was wondering if there is a way to find all the output ports clocked by a certain clock for a source synchronous design. My first guess is to make a fanou...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Ahh, got it. I hate to say it, but think that entering the ports will get you results the most quickly.

One other idea, and I don't want to say this, is to apply the set_output_delay to all outputs:

set_output_delay $OMD -max -clock [get_clocks {AD2CK}] [all_outputs]

In your set_clock_groups command, make sure the AD2CK clock is in the same group as the clock of interest and cut from all other clocks. In essence, the output delay is applied to all I/O, but cut from all of them except the ones fed by that clock. I still think it's ugly, but just an idea...