Core voltage stays the same across both devices. Your PLL multiplier will need to change to get you up to 270 MHz. This will ripple down into SYSCLK2 and SYSCLK4 which feed into the peripherals, so the peripherals would need to accommodate for the faster clock being supplied. Hopefully the drivers are written to "figure out" the proper timings based on the input clock.
Brad ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Viet Hoang Sent: Monday, July 27, 2009 8:46 PM To: David Brownell; davinci-linux-open-source Subject: Re: What we need to change in order to use 270MHz DM355? Hi David, Thanks for your answer. I am sorry but I'd like to make sure that your answer is not only about the software aspect. So, there's nothing needs to be changed in the hardware / PCB design, just replace 216Mhz chip by 270MHz one? Thanks for your help, Viet Hoang. --- On Tue, 28/7/09, David Brownell <[email protected]> wrote: From: David Brownell <[email protected]> Subject: Re: What we need to change in order to use 270MHz DM355? To: "Viet Hoang" <[email protected]> Date: Tuesday, 28 July, 2009, 1:16 AM On Monday 27 July 2009, you wrote: > Do you know if we need to change any thing in order > to use 270MHz chips instead of 216MHz? clock setup in the boot loader should be all. ________________________________ Get your preferred Email name! <http://sg.rd.yahoo.com/aa/mail/domainchoice/mail/signature/*http:/mail.promotions.yahoo.com/newdomains/aa/> Now you can @ymail.com and @rocketmail.com.
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