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Altera_Forum's avatar
Altera_Forum
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10 years ago

sdc files order

Hi guys, I have several sdc fiies, some from 3rd party vendors. 1. do i put my first (with the clock definitions).... MY.sdc Qip.1.sdc ... 2. or Qip.1.sdc .. MY.sdc ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

one more is you may...

my sdc:

create_clock -period 3.104 -name {clk322M} [get_ports clk322M]

create_clock -period 10.0 -name {clk100M} [get_ports clk100M]

create_clock -period 40.0 -name {clk25M} [get_ports clk25M]

create_clock -period 10.0 -name {qdr2_refclk} [get_ports {qdr2_refclk}]

derive_pll_clocks

derive_clock_uncertainty

if that called last is OK?

or should i split it to one file with clocks at the beginning, then another with derive_pll_clocks at the end....?