BlackFin and SDRAM On EZ-Lite Problems

Actually, Bernhard is talking about something completely different.  He is
talking about having an emulator pod connected to a development board and
the emulator pod supplying just enough power through the TDI/TDO/TMS signals
to keep the dsp in somewhat of a powered state.

As for the support line not knowing about the patch, well, I found out about
it from them, so at least someone there knows about it.


"Kevin Harvey" <kevin.harvey@fluke.com> wrote in message
news:bkrohk$jth$1@potlatch.tc.fluke.com...
> Yes Bernhard, there is some strange behaviour with the ADI development
> boards.
>
> In my case the patch suggested by KG7HF solved the problem. There was
indeed
> a problem with the way that ADI had implemented the SDRAM. It is a great
> shame that ADI's support team did not know about this and I had to get the
> answer from the newsgroup.
>
> I have always had first class (if sometimes slow) support from them.
Perhaps
> the heavy advertising on BlackFin has caused them to get a new bunch of
> support people and they have not trained them yet.
>
> Kevin
>
> "Bernhard Holzmayer" <holzmayer.bernhard@deadspam.com> wrote in message
> news:3621509.SLu6kcEnAo@holzmayer.ifr.rt...
> >
> > Sorry for the delayed answer...
> > What you describe, is obvious. Yes, I know, that it's necessary to
> > unplug the device, not only power cable, but USB cable, too.
> > I'm rather sure that I did so. Not only for a couple of seconds.
> > Let's say for at least 30seconds (maybe even 10minutes).
> >
> > Nothing changed - looked as if SPORT or DMA were partially dead.
> >
> > After the weekend, when I was about to debug the problem, it had
> > vanished. This happened a few times.
> > But, as you said: this sounds like voodoo/magic.
> > However, I don't believe in such occult things nor do I practice
> > them. therefore I told myself, that something must have been gone
> > wrong.
> > But now, when I read Kevin's note, I remembered this.
> > Gave me hope that I was not this stupid...
> >
> > Bernhard
>
>

KG7HF wrote:

> Actually, Bernhard is talking about something completely
> different.  He is talking about having an emulator pod connected
> to a development board and the emulator pod supplying just enough
> power through the TDI/TDO/TMS signals to keep the dsp in somewhat
> of a powered state.
> 

That's not the case. I __did__ remove all cables. At least, I 
thought I did. 
I'd agree with what you say, especially because I own another board 
which is fully powered through USB, thus knowing of this issue.
I always remove the USB cable at first, then the power cable, then 
insert the power cable and after that the USB cable.
It's such a boring process, that I'd certainly have noticed the 
difference. 
But I don't mind if you doubt this - so do I...

Bernhard