<ekavirsrikanth@gmail.com> wrote in message
news:1184395776.985541.34040@j4g2000prf.googlegroups.com...
> hi ,
>
> i have a probelm while i am using the DCM for clock mutiply. i am
> using single DCM for my virtex 2 pro device. i have two sub modules
> and a top module. i need to use DCM in all the 3 modules (2 sub
> modules and top module). so i invoked dcm and component instantiation
> in all the 3 modules. but i am facing the problem while i am mapping .
> its throwing the error... like
>
> error: ERROR:LIT - IPAD symbol "clk77p76" is driving more than one
> loads. IPAD can only
> drive a single IBUF or two IBUFDS. If you are using a BUF instead
> of an
> IBUF, it may have been simplified, please use an explicit IBUF
> instead.
>
> can my dcm clk cannnot drive more than 2 loads .....
>
> regards
> srik
>
You only need to instantiate a DCM in the top module.
Reply by ekav...@gmail.com●July 14, 20072007-07-14
hi ,
i have a probelm while i am using the DCM for clock mutiply. i am
using single DCM for my virtex 2 pro device. i have two sub modules
and a top module. i need to use DCM in all the 3 modules (2 sub
modules and top module). so i invoked dcm and component instantiation
in all the 3 modules. but i am facing the problem while i am mapping .
its throwing the error... like
error: ERROR:LIT - IPAD symbol "clk77p76" is driving more than one
loads. IPAD can only
drive a single IBUF or two IBUFDS. If you are using a BUF instead
of an
IBUF, it may have been simplified, please use an explicit IBUF
instead.
can my dcm clk cannnot drive more than 2 loads .....
regards
srik