Chris Carlen wrote:

> Vladimir Vassilevsky wrote:
> 
>> BlackFin is fast MCU with good DSP capabilities. The 12mm BGA is nice
>> small package. The only problem is the need for 4+ layer board.
>> BlackFin in LQFP can be put on the two layer board.
> 
> And an outside contractor to stick it and X-ray.

Not really. Just an oven or a heat gun, with some care and patience.

>> Why didn't you buy an arb generator or timer board from NI then? It
>> could save you a lot of effort.

> Plus, our main computer programmer hates LabVIEW, and I'm not too fond 
> of it myeslf,

LabView is rubbish, no doubt. However NI supplies the dll drivers 
callable from C++.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Chris Carlen wrote:

> Vladimir Vassilevsky wrote:
> 
>> BlackFin is fast MCU with good DSP capabilities. The 12mm BGA is nice
>> small package. The only problem is the need for 4+ layer board.
>> BlackFin in LQFP can be put on the two layer board.
> 
> And an outside contractor to stick it and X-ray.

Not really. Just an oven or a heat gun, with some care and patience.

>> Why didn't you buy an arb generator or timer board from NI then? It
>> could save you a lot of effort.

> Plus, our main computer programmer hates LabVIEW, and I'm not too fond 
> of it myeslf,

LabView is rubbish, no doubt. However NI supplies the dll drivers 
callable from C++.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Chris Carlen wrote:

> dalai lamah wrote:

>> F28xx is a DSP,

This is wrong.

> Blackfin is media oriented (and hence low power),

This is also wrong :)
Blackfin is neither media oriented no low power.

Both statements are just the marketing hype.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Chris Carlen wrote:
<snip>
> 
> It is the EVM that drove me to the F2812.  But even another chip like 
> the Freescale's with TPUs but without 150MHz CPU might not be enough.

TI are sampling the F28335, I see that claims 6 DMA channels, and
a 150ps PWM output precision, so you could see if it
offers anything more ?

If you can still pack all you need into a single chip DSC, then
that is the best solution. When you out-grow that, the choices are
Multiple DSC, or DSC+FPGA, or even DSC+DSC+FPGA

-jg

Chris Carlen wrote:
> 
> Notice that this really utilizes the EVM capabilities almost to the max. 
>  I think I have a use for the 4th timer as well.  Oh, I think it 
> generates the QEP sim clock.
> 
> It is the EVM that drove me to the F2812.  But even another chip like 
> the Freescale's with TPUs but without 150MHz CPU might not be enough.

The Freescale MPC5567 has a 32 channel eTPU, a 24 channel eMIOS, a 32 
channel eDMA, and a 132 MHz 32-bit core.


      -Dave-

DaveT wrote:
> Chris Carlen wrote:
>>
>> Notice that this really utilizes the EVM capabilities almost to the 
>> max.  I think I have a use for the 4th timer as well.  Oh, I think it 
>> generates the QEP sim clock.
>>
>> It is the EVM that drove me to the F2812.  But even another chip like 
>> the Freescale's with TPUs but without 150MHz CPU might not be enough.
> 
> The Freescale MPC5567 has a 32 channel eTPU, a 24 channel eMIOS, a 32 
> channel eDMA, and a 132 MHz 32-bit core.
> 
> 
>      -Dave-

Holy moly, those are some complicated peripherals!  Perhaps I am wrong, 
there are some more powerful peripheral sets out there.  Though I have 
no idea what all that stuff does.  It seems TPUs are processors 
themselves.  I should look into what they do...

The new SHARCs have a bit more in the way of waveform generation than I 
realized the last time I looked.

Well there are certainly a lot of options then for more power, when and 
if I need it.  Seems like Blackfin, SHARC, and

One problem with all these vendors is it can be awfully time consuming 
to wade through all their families and devices to find out just what 
features they have.  It would be nice if there were some better way to 
converge toward the device with the right features.  I love when there 
are 10 different ways to link to the same device...


-- 
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