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- Path: news.Stanford.EDU!not-for-mail
- From: carlosn@leland.Stanford.EDU (Carlos Guillermo Niederstrasser)
- Newsgroups: comp.sys.m68k
- Subject: Re: MC68332/TPU programming
- Date: 26 Mar 1996 13:18:11 -0800
- Organization: Stanford University Student
- Message-ID: <4j9muj$4vm@adelbert13.Stanford.EDU>
- References: <31581C41.104A@telogy.com>
- NNTP-Posting-Host: adelbert13.stanford.edu
-
- In article <31581C41.104A@telogy.com>,
- Christine Price <cprice@telogy.com> wrote:
- >I'm learning how to design with the MC68332. I have an existing design
- >that I must retro-fit with this new processor. The old design incor-
- >porates a 12.288MHz clock. It also derives a divide by 4 signal from
- >this clock. The problem I have is that it would be nice to run the new
- >processor at 20MHz but I can't seem to find a way to generate both the
- >12.288MHz and the 3.072MHz signal from the system clock using the TPU.
- >Does anyone know of a way to do this?
- >
- >Thanks,
- >Christine Price
-
-
- If you have the G mask of the '332, I would suggest using the Qued output
- match function, or a single channel of either the Pulse Width Modulation,
- or the TAble Stepper Motor functions.
-
- All 3 functions should allow you to generate square waves of varying
- frequencies. (Usually as a function of the TCR1 or TCR2 clocks)
-
- Carlos
-
- --
-
- -----------------------------------------------------------------------
- | Carlos G. Niederstrasser | Without a Vision, |
- | Stanford University Aero/Astro | The people perish. |
- | | - Proverbs 29:18 |
- | carlosn@leland.stanford.edu |-------------------------------|
- | //www-leland.stanford.edu/~carlosn/ | Ad Astra per Ardua Nostra |
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