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RE: Memory-mapped A/D converter



Thanks!

   I'll inform of my results to the list.

  Best regards,

   Rafael Collantes

At 10:15 26/04/02 +0200, Magnus Mårtensson wrote:
>Hi Rafael.
>The signals are available if you are handy with a soldering iron :) The 
>data bus can be patched
>from X14. A1 - A4, wr_, rd_ and csp0_ are available as test points.
>I had a quick look at the MAX125 and noticed that the data/address lines 
>are multiplexed.
>This makes the connections a little bit tricky. You probably need some 
>external logic to make this work,
>but on the other hand I'm quite convinced that it can be done.
>
>Regards
>/Magnus
>
> > -----Original Message-----
> > From: Rafael Collantes [mailto:racb@xxxxxxx.com]
> > Sent: den 26 april 2002 09:54
> > To: Mikael Starvik; dev-etrax
> > Subject: RE: Memory-mapped A/D converter
> >
> >
> > Mikael,
> >
> >    Thanks for the info. But the question was more related to the
> > DEVELOPMENT BOARD. The databus and chip select signals are
> > not accesible!
> >
> >    Best regards,
> >
> >
> >      Rafael Collantes
> >
> > At 07:48 26/04/02 +0200, Mikael Starvik wrote:
> > >I haven't looked at this particular chip but the ETRAX 100 provides
> > >a large number of chip selects and two external DMA channels.
> > >
> > >Have you read this document?
> > >
> > >http://developer.axis.com/doc/hardware/etrax100lx/des_ref/ET1
>00LX_05_Bus_Interface_010823.pdf
> >
> >/Mikael
> >
> >-----Original Message-----
> >From: owner-dev-etrax@xxxxxxx.com]On">mailto:owner-dev-etrax@xxxxxxx.com]On
> >Behalf Of Rafael Collantes
> >Sent: Thursday, April 25, 2002 4:40 PM
> >To: dev-etrax
> >Subject: Memory-mapped A/D converter
> >
> >
> >Hi all,
> >
> >    We are trying to use a MAX125 A/D converter in the Axis Development
> >Board. Has anyone had any experience in adding memory-mapped devices to the
> >board?
> >How should we generate the chip select signals... is it possible to do it
> >from the ETRAX chip or should we use external logic?
> >
> >    Thanks a lot.
> >
> >    Rafael Collantes