From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <39411EED.368F2707@motorola.com> Date: Fri, 09 Jun 2000 11:44:29 -0500 From: "Richard Hendricks" MIME-Version: 1.0 To: "'linuxppc-embedded@lists.linuxppc.org'" Subject: Re: Running the 823 FADS board @ 72 MHZ References: <319E391E2049D311843500609457383D07FC47@exchange.vividimage.com> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: The FADS board are not designed to run at that speed. Just for kicks, I've tried seeing how fast I can go without problems. At about 60 MHz the SDRAM no longer works, and 68 MHz the DRAM starts not working. This is with the default 50 MHz tables. With better tuning, it may be possible to go higher, but I doubt you could reach 72 MHz with the FADS. Kirk Haderlie wrote: > > We are trying to run the FADS board @ 72MHz and enjoying the infamous UPM > tables. Has anyone successfully run the FADS board at this speed and if so > would you be willing to share your UPM tables. We are trying to set them > up for the SDRAM and 60-ns EDO DRAM. > > Kirk Haderlie > kirk@vividimage.com > Vivid Image Engineering > -- MPC823 Applications Engineering Development Get help from other MPC823 customers on the comp.sys.powerpc.tech newsgroup! ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/