Altera ByteBlaster II schematic

 I just came across this schematic for the ByteBlaster II:

http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA

Someone has probably worked out the circuit by tracing the connections on a
unit as Altera hasn't published it, AFAIK.

Leon
-- 
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

"Leon Heller" <leon_heller@hotmail.com> wrote in message
news:408c2ecd$0$19422$cc9e4d1f@news-text.dial.pipex.com...
> I just came across this schematic for the ByteBlaster II:
>
> http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
>
> Someone has probably worked out the circuit by tracing the connections on
a
> unit as Altera hasn't published it, AFAIK.

You need to register to be able to download the above file.

Leon
-- 
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

Leon Heller wrote:

>  I just came across this schematic for the ByteBlaster II:
> 
> http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> 
> Someone has probably worked out the circuit by tracing the connections on a
> unit as Altera hasn't published it, AFAIK.

And does it work ?

Rene
-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

"Rene Tschaggelar" <none@none.net> wrote in message
news:408cd362$0$703$5402220f@news.sunrise.ch...
> Leon Heller wrote:
>
> >  I just came across this schematic for the ByteBlaster II:
> >
> > http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> >
> > Someone has probably worked out the circuit by tracing the connections
on a
> > unit as Altera hasn't published it, AFAIK.
>
> And does it work ?

I mean to try it, when I get my Cyclone board finished.

Leon
-- 
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

"Leon Heller" <leon_heller@hotmail.com> wrote in message
news:408cffe8$0$19420$cc9e4d1f@news-text.dial.pipex.com...
> "Rene Tschaggelar" <none@none.net> wrote in message
> news:408cd362$0$703$5402220f@news.sunrise.ch...
> > Leon Heller wrote:
> >
> > >  I just came across this schematic for the ByteBlaster II:
> > >
> > > http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> > >
> > > Someone has probably worked out the circuit by tracing the connections
> on a
> > > unit as Altera hasn't published it, AFAIK.
> >
> > And does it work ?


It looks about right if SOT-23's were used for all the diodes and
transistors.


Nial

"Leon Heller" <leon_heller@hotmail.com> wrote in message
news:408cffe8$0$19420$cc9e4d1f@news-text.dial.pipex.com...
> "Rene Tschaggelar" <none@none.net> wrote in message
> news:408cd362$0$703$5402220f@news.sunrise.ch...
> > Leon Heller wrote:
> >
> > >  I just came across this schematic for the ByteBlaster II:
> > >
> > > http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> > >
> > > Someone has probably worked out the circuit by tracing the connections
> on a
> > > unit as Altera hasn't published it, AFAIK.
> >
> > And does it work ?
>
> I mean to try it, when I get my Cyclone board finished.

A problem with this is that the BF550 and BF570 transistors used are
unavailable - 20 weeks delivery according to Arrow. 8-(

I'll see if I can find equivalent devices.

Leon
-- 
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

Leon

I have tried the website, I even registered, but somehow, I cannot
click on the "byteblaster.pdf" link to download. How do you get to
download the file??

Thanks
Ted


> I just came across this schematic for the ByteBlaster II:
> 
> http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> 
> Someone has probably worked out the circuit by tracing the connections on a
> unit as Altera hasn't published it, AFAIK.
> 
> Leon

Click on the disk icon in the second column


"ted" <edaudio2000@yahoo.co.uk> wrote in message
news:c54bf83f.0404280333.3f03ac24@posting.google.com...
> Leon
>
> I have tried the website, I even registered, but somehow, I cannot
> click on the "byteblaster.pdf" link to download. How do you get to
> download the file??
>
> Thanks
> Ted
>
>
> > I just came across this schematic for the ByteBlaster II:
> >
> > http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> >
> > Someone has probably worked out the circuit by tracing the connections
on a
> > unit as Altera hasn't published it, AFAIK.
> >
> > Leon

Leon Heller wrote:

> "Leon Heller" <leon_heller@hotmail.com> wrote in message
> news:408cffe8$0$19420$cc9e4d1f@news-text.dial.pipex.com...
> 
>>"Rene Tschaggelar" <none@none.net> wrote in message
>>news:408cd362$0$703$5402220f@news.sunrise.ch...
>>
>>>Leon Heller wrote:
>>>
>>>
>>>> I just came across this schematic for the ByteBlaster II:
>>>>
>>>>http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
>>>>
>>>>Someone has probably worked out the circuit by tracing the connections
>>
>>on a
>>
>>>>unit as Altera hasn't published it, AFAIK.
>>>
>>>And does it work ?
>>
>>I mean to try it, when I get my Cyclone board finished.
> 
> 
> A problem with this is that the BF550 and BF570 transistors used are
> unavailable - 20 weeks delivery according to Arrow. 8-(
> 
> I'll see if I can find equivalent devices.

Since this is not a precision analog device, I guess any bipolar does 
the job. Basically two inverters to boost the voltage plus an emitter
follower to lower the output impedance.

Rene
-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

Leon Heller wrote:

>  I just came across this schematic for the ByteBlaster II:
> 
> http://www.mcu.cz/atm/index.php?direction=0&order=&directory=EDA
> 
> Someone has probably worked out the circuit by tracing the connections on a
> unit as Altera hasn't published it, AFAIK.

Did anyone succeed in getting it to run ?
It appears to be too simple.  Even simpler than the MV.
Not partwise, but from the functionality.

I didn't even try as I get one from Altera.
But, just in case one of my customers
is going to need one ...

Rene
-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net