How do I buffer a signal in XST as I feel it is getting overloaded. if I write Signal1
XST Question
Nov 08, 2004
4 Replies
if the signal is a clock signal you can instantiate a BUFG or multiple BUFGs to optain load manual load balancing
Antti
You can add "-max_fanout 50" (or whatever fanout you want) to the .xst-configfile or edit the appropriate GUI-form.... That setting is global, but it should be possible to pass it as an signal attribute.
Georg Acher, acher@in.tum.de
http://wwwbode.in.tum.de/~acher
"Oh no, not again !" The bowl of petunias
.xst-configfile
Look at the constraints guide, you can set max fanout for a specific signal or you can do it globally.
We are using a 20 input (each 8 bit wide) coregen instantiated MUX operating at
160 MHz on a Vitex-E device. When placed and routed in ISE6.2i, we get that the timing-error that the mux select lines are having fanout problem. We tried duplicating the net source, but still the problem persists. Any Help please.Join the Discussion
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