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Old 08-27-2003, 08:33 AM
Allan Herriman
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Default Virtex2pro "Bufg Exclusivity"


In the Virtex2pro user guide,
the section on "bufg exclusivity" (p69) says

"Each DCM has a restriction on the number of BUFGs it can drive on its
(top or bottom) edge. Pairs of buffers with shared dedicated routing
resources exist such that only one buffer from each dedicated pair can
be driven by a single DCM. The exclusive pairs for each edge are: 1:5,
2:6, 3:7, and 4:8."

BUFGs are actually numbered 0 to 7, so I assume the above should have
read "0:4, 1:5, 2:6 and 3:7."

Can someone from Xilinx please confirm that this is the case?


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