Azam,

There are demo pcb's I have seen for 333MHz DDR SDRAM.

Austin

azam wrote:

> I was trying to determine the max frequency that can be clocked thru
> the Virtex-4 FPGA pins. While referring the Virtex-4 User Guide the (DC
> and Switching characteristics) Section of the book has blank columns.
> Although the Virtex-4 FPGA Handbook mentions the capabiltiy to meet
> different I/O standards, I was wondering has anyone been able to
> exercise the I/Os of the Virtex Family above 300MHz.
> 
> Thanks
> -Azam
> 

Which speed grade? You may want to check the latest user guide and data
sheet.

HTH,
Jim

"azam" <azamirfan@gmail.com> wrote in message
news:1120689352.809458.282120@o13g2000cwo.googlegroups.com...
> I was trying to determine the max frequency that can be clocked thru
> the Virtex-4 FPGA pins. While referring the Virtex-4 User Guide the (DC
> and Switching characteristics) Section of the book has blank columns.
> Although the Virtex-4 FPGA Handbook mentions the capabiltiy to meet
> different I/O standards, I was wondering has anyone been able to
> exercise the I/Os of the Virtex Family above 300MHz.
>
> Thanks
> -Azam
>

I was trying to determine the max frequency that can be clocked thru
the Virtex-4 FPGA pins. While referring the Virtex-4 User Guide the (DC
and Switching characteristics) Section of the book has blank columns.
Although the Virtex-4 FPGA Handbook mentions the capabiltiy to meet
different I/O standards, I was wondering has anyone been able to
exercise the I/Os of the Virtex Family above 300MHz.

Thanks
-Azam