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Altera_Forum
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11 years ago

Create_generated_clock - Help with syntax

Hi, OK, I have now got a base clock defined in the .SDC file, but TimeQuest has identified other "clocks" that I need to define in the SDC file. I am using a counter to subdivide the maste...
Altera_Forum's avatar
Altera_Forum
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11 years ago

-source refers to your master clock

You should also specify the divide relationship and the duty cycle.

create_generated_clock -name <name> -source <source> -divide_by <ratio: 2,4,8, ....> -duty_cycle 50.00 <generated_clk>

<name> a name assigned to the generate clock to be used in TQ analysis

<source> the reference to your master clock

<generated_clk> in your case this is the lpm_counter port where you pick the generated clock from