about dft signal
Hi,
in DFT insertion the clock definition is based on your sepc.if you want to use single clock as a scan clock u can define that clock "clk" as u r scan clock and the tool will fix the "clk2", "clk3" with the "clk" in dft mode. The clk should be a primary input.
if you wants to have 3 diffrent scan clocks u can declar the clk,clk2,clk3 as scan clocks the tool will not fix the clk2,clk3 logic with the "clk".
what ever the clocks u define as scan clock should be an input.
Thanks,
ramesh