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Old 01-07-2004, 05:20 PM
Peter Alfke
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Default Re: Virtex and Spartan

Bhadri,
somebody gave you bad information.
Virtex and Spartan are very similar, sometimes even almost identical.
Virtex emphasizes size and performance, Spartan is the more frugal
(hence the name) brother.
SpartanXL is almost identical with XC4000XL,
Spartan-II is almost identical with Virtex
Spartan-IIE is almost identical with Virtex-E
Spartan3 has many of the features of Virtex-II, but has reduced the chip
size and therefore eliminated some features, and it has a newer version
of the DCM.

Then there is technological evolution, which determines chip size and
price, as well as performance and supply voltage.
There is no substitute to studying the data sheets.

But, to paraphrase Annie Oakley:
"Anything Spartan can do, Virtex can do also".
Often faster, sometimes in a different package, usually at a higher price...
Peter Alfke
=======================
Bhadri wrote:
>
> Hello
> can anyone say me what is the difference between virtex and spartan
> fgpa chips.
> It is just the number of gates in them, voltage levels or anything
> more than that.
> I have used spartan chips.i configured the chip with different vhdl
> files again and again on the same chip.But somebody said it is not
> possible in the xcv1000 virtex chips.(dynamically reconfigurable).Is
> it true.Then,y are they called FPGA's.
>
> Thanks in advance
> bhadri

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