[hpsdr] Blackfin & SDR

[Philip Covington]

On 8/18/07, Christophe DONZELOT <hb9tln at hb9ww.ampr.org> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> >
> > Someone complained that 16-bits is not enough dynamic range but we
> > > should all remember that a 16-bit machine can handle numbers of any
> > > size just like we can multiply large numbers using pencil and paper one
> > > digit at a time 16-bit computers can process 64 or 32 bit numbers 16
> > > bits at a time.
> > >
> >
> >
> > Yeah, yeah, yeah... I can do 32 bit DSP with a 4 bit processor...
> > that's not the point.  I am not convinced that the Blackfin is going
> > to be fast enough for use at a reasonable IF because of its 16 bit DSP
> > engine even running it at 400 or 600 MHz.
> >
> > What is the IF into the ADC in the FT-450?
> >
> > Phil N8VB
> Hello
> The both MAC of the Blackfin can be coupled to obtain a 32*32 bits MAC
> with 80 bits accumulator.
> I use these devices under uClinux for a video compression project.
> Under uClinux you get all the gnu toolchain for free , Analog has ported
> an optimised lib for DSP processing .
> By coupling both MACs you get "only" 600 MMACs per second @600MHz.
> To interface A/D or the FPGA there the PPI bus which is a 16 bits
> synchronous parallel port originally aimed for video application with
> dedicated DMA modes.
> These processors are cheap & powerfull .
> You also can use PPI to drive a flat panel.
>
> 73
> Chris HB9TLN

Hmmm.. very interesting.  I'll have to look into the Blackfin some
more.  Unfortunately all of the apps I was able to Google were being
used to do slow things like < 24 kSPS audio.

Phil N8VB

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