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Migrate from MPC834x revision 1.x to 3.x

Posted: 10 Feb 2009     Print Version  Bookmark and Share

Keywords:MPC834x  DDR2  DMA 

This document by Freescale outlines the differences between MPC834x revisions 1.x and 3.x with respect to software, hardware, internal module revision, and chip pin assignment. It also provides information for board designers migrating from revision 1.x to 3.x. This document is relevant for both software and hardware developers.

MPC834x revision 3.x supersedes revision 1.x. This revision is hardware backward-compatible with the previous revisions, but requires some changes in software. Additional features, such as DDR2 and DMA external support, are added based on customer feedback.

This application note lists important changes to the DDR programming model and to register settings between revision 1.x and revision 3.x. Although most of the registers values require no change when migrating from revision 1.x to 3.x, the user is strongly encouraged to go through the software setting changes in detail and find the most appropriate settings for the specific memory device in use.

View the PDF document for more information.





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