The DM644x supports 32MB NOR devices only when operating in 16-bit mode. In this case the EM_BA[0] pin is not needed to access individual bytes (since all accesses are now 16-bits wide) and so instead it is repurposed as the upper most address line. SO you'll still have only 24 address lines, but since all accesses are 2-bytes wide, you can address the entire 32MB space.
Note that the EVM uses a 32 MB flash chip, but only 16 MB of it is accessible due to the way the EM_BA[0] line is routed. Please don't ask me why this was done, because I don't know :) Regards, Daniel Daniel J. Allred Software Applications Catalog DSP / Emerging End Equipment -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andrew Armstrong Sent: Friday, March 09, 2007 5:56 AM To: Linux DaVinci Subject: Bigger NOR Hi guys, I was wondering if anyone has managed to use the larger 32MB NOR chips on their EVM. As far as I can tell the EVM does not have the address lines to do this? Regards, Andrew _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
