FPGA Central

Hi folks,
are there any DSP soft processor cores for fpgas available. I have done
a search and only found 32 bit RISCs but no DSP processor cores.
Thanks in advance
Sudhir

I have seen one or two, but it was a long time ago. People doing DSP on
FPGAs prefer implementing the function directly in hardware as it's
much faster and more cost-effective.

Leon

[email protected] wrote:
> Hi folks,
> are there any DSP soft processor cores for fpgas available. I have done
> a search and only found 32 bit RISCs but no DSP processor cores.
> Thanks in advance
> Sudhir
>


Why?

If you have DSP function to perform, do it in hardware, it is much
faster and consumes less power. Otherwise, use a dedicated DSP
microprocessor...again, far faster and consumes less power, and more
supportable.

[email protected] wrote:

> Hi folks,
> are there any DSP soft processor cores for fpgas available. I have done
> a search and only found 32 bit RISCs but no DSP processor cores.
> Thanks in advance
> Sudhir

I thought the tool flows supported this now, but via the DSP blocks ?
-ie rather than a separate 'core', you compile what you want, into
as many DSP Cells as you need ?
A Soft-DSP will never be as fast as a dedicated device, the key
in FPGA is to spawn DSP in parallel and in HW.
Check with Altera, Lattice, Xilinx...
-jg

Jim Granville wrote:

> [email protected] wrote:
>
>> Hi folks,
>> are there any DSP soft processor cores for fpgas available. I have done
>> a search and only found 32 bit RISCs but no DSP processor cores.
>> Thanks in advance
>> Sudhir
>
>
> I thought the tool flows supported this now, but via the DSP blocks ?
> -ie rather than a separate 'core', you compile what you want, into
> as many DSP Cells as you need ?
> A Soft-DSP will never be as fast as a dedicated device, the key
> in FPGA is to spawn DSP in parallel and in HW.
> Check with Altera, Lattice, Xilinx...

For a topical update on this, check Xilinx website news on their
purchase of AccelChip.

As you can see, these newest tool flows somewhat side-step the need for
DSP Cores, per-se.

-jg