Re: Quadrature Divider ?

Maybe. "Complicated" is a very subjective term. It seems unlikely that even
if a guy had the software and hardware to program the CPLD he would make the
required effort just to save $29, or even $100 (assuming three servos).
There is a lot more to it than just designing the logic and programming the
chip.
--
Phil Mattison

----- Original Message -----
From: Jon Elson <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, January 06, 2009 10:18 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Quadrature Divider ?


> Yahoo wrote:
> > I would agree. I've thought a lot about this problem and there is no way
to
> > do it without a lot of very complicated logic because you have to be
able to
> > resolve direction changes anywhere within your reduced-frequency pulse
> > train. It could be done but you would need an FPGA. Not cost-effective.
> >
> I'm quite sure it could be done in a Xilinx XC9536 CPLD which costs
> about $4 and runs on 5V.
> Of course, if you don't know how to program one, there is a learning
curve.
>
> Jon
>
> ------------------------------------
>