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Message
From: "Jim Dempsey" <tapedisk@a...>
Date: Thu, 23 Oct 2003 08:11:51 -0500
Subject: Re: [oc] Basic FPGA question (OT)
The original question did not reference placement of
asynchronous ring oscillator of 3 NOT gates. The
subsequent response from Renaux was in regard
to the frequency of a counter. (not the response
of an oscillator to temperature change).
However, my interpretation of the original post
was "How can I read the temperature of the
core and then incorporate that into a control
for a fan". Your suggestion of the ring
oscillator is a good one for the means of
creating part of the temperature sensor.
The feed-back control to the fan has yet to
be discussed. This would include maybe a
counter and some other circuits as well as
possibly the use of I/O pins.
My only point was that the discussion is
amongnst engineer types. We tend to assume
statements from other engineers don't have
"silly" mis-interpretable mistakes such as
stating the inverse of a condition. I was
simply pointing this out.
Jim
----- Original Message -----
From: "Kirill 'Big K' Katsnelson" <kkm@d...>
To: <cores@o...>
Sent: Thursday, October 23, 2003 2:05 AM
Subject: Re: [oc] Basic FPGA question (OT)
> Some time ago, Jim Dempsey wrote...
> >Therefore I believe Renaux's statement should read
> >"The temperature is proportional to the frequency" and
> >not the other way around.
>
> No, the initial "Basic Question" was how to, among other thing, control
> the placement on a chip of an *asynchronous* ring oscillator of 3 NOT
gates.
> Its frequency does not obviously depend on any of the clocks.
>
> -kkm
>
>
>
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