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From: b_dutta on 25 Jun 2010 04:32
Hi,

Seeking some recommendations for embedded low-power (definitely
fanless) uP + DSP that can handle H.264 Basic profile encoding, for
VGA frames @ 30fps (or more) with 30% (atleast) motion. At the moment,
DaVinci seems the closest choice, but for the price-points I am
looking at, DaVinci's are still about 40% more expensive. Blackfin
seem the second best choice, but are lack horsepower on DSP end
(apparently from some reports) for the kind of H.264 heavylifting.

Given the dual objective of low-power (consumption), and low-cost, are
FPGA's a viable alternative ? What could be the potential pitfalls of
using FPGA, as against a DSP.

Application context is ruggedized, semi-mobile/portable, communication
(VoIP over 3G), control/monitoring device. Control is for resistive
load equipment upto 1KW, and monitoring some sensors.

regrds,
BD
From: b_dutta on 26 Jun 2010 07:08
On Jun 25, 8:47 pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote:
> b_dutta wrote:
> > Hi,
>
> > Seeking some recommendations for embedded low-power (definitely
> > fanless) uP + DSP that can handle H.264 Basic profile encoding, for
> > VGA frames @ 30fps (or more) with 30% (atleast) motion.
>
> Forget about it.

Why ? Qualify your statement.

> > At the moment,
> > DaVinci seems the closest choice, but for the price-points I am
> > looking at, DaVinci's are still about 40% more expensive.
>
> DaVinci is a marketing word. It means nothing. Which TI processor do you
> mean? What is 40% more expensive compared to what?

While I do not recollect a specific processor or it's part number,
going by the specs, and app notes and checking prices at digikey the
~40% price difference is what I found between somewhat similarly specd
DaVinci and Blackfin. When I say similarly spec'd, I mean processors
whose app notes state similar usage profile.

> > Blackfin
> > seem the second best choice, but are lack horsepower on DSP end
> > (apparently from some reports) for the kind of H.264 heavylifting.
>
> Which of BlackFins?

Don't have the processor number, but this was a dual-processor on a
die, meant for video applications.

> > Given the dual objective of low-power (consumption), and low-cost, are
> > FPGA's a viable alternative ?
>
> No slightest clue, huh. Just casting buzzwords. Are you a stupident?

If I say 'Yes, I am a stupident', will you be help any more ? If not,
I'd choose to ignore arsenic licking trolls.

> > What could be the potential pitfalls of using FPGA, as against a DSP.
>
> What could be potential pitfalls of using a boat, as against a car?

Are yiou a stupident ?

> > Application context is ruggedized, semi-mobile/portable, communication
> > (VoIP over 3G), control/monitoring device. Control is for resistive
> > load equipment upto 1KW, and monitoring some sensors.
>
> I also know many smart words: surge, gradual improvement, chaos theory,
> innovation, digital DNA, hyperstring, nanoparticle.

I am sure you do. Are those the only ones, or do you know few more ?
From: Stargazer on 27 Jun 2010 05:30
On Jun 26, 2:08 pm, b_dutta <banibrata.du...(a)gmail.com> wrote:

[...]
> > > At the moment,
> > > DaVinci seems the closest choice, but for the price-points I am
> > > looking at, DaVinci's are still about 40% more expensive.
>
> > DaVinci is a marketing word. It means nothing. Which TI processor do you
> > mean? What is 40% more expensive compared to what?
>
> While I do not recollect a specific processor or it's part number,
> going by the specs, and app notes and checking prices at digikey the
> ~40% price difference is what I found between somewhat similarly specd
> DaVinci and Blackfin. When I say similarly spec'd, I mean processors
> whose app notes state similar usage profile.

According to digikey.com, the cheapest DaVinci that can do H.264 is
DM365 for ~$25 and the most expensive is 1GHz DM6467 for ~$150. That
is, H.264-capable DaVincis have 600% price difference between them -
so, it *is* important to state which DaVinci you consider 40% above
your budget.

In higher qtys and with right distributor it should be possible to get
prices 30-50% better than listed on digikey.com

Daniel

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