Re: [VirtexII + DCM + newbie] problems with the clocksignals from DCM
__From__: Marc Randolph
__Subject__: Re: [VirtexII + DCM + newbie] problems with the clocksignals from DCM
__Date__: Mon, 01 Dec 2003 20:33:00 -0600
Martin Euredjian wrote:
"Yttrium" wrote:
ddr_clkx2 <= ddr_clkx2_out and locked;
That's BAD design, as the the tools are saying.
Agreed, it is not good FPGA design.
But the crazy thing is that Xilinx has the ability to do this relatively
safely... but they don't seem to push it very hard and the tools don't
automatically use it for you. Check out the BUFGCE in the V2 and S3
devices.