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Addressing NOR and NAND Flash on the T2080 using ADM mode 0

Question asked by Larry5335 on Nov 13, 2015
Latest reply on Nov 17, 2015 by Serguei Podiatchev

Customer is using NOR Flash as the primary boot device and then switching over to raw NAND Flash. The driver being used for the NAND requires 4 Ready/Busy hardware lines, 1 for each of the physical Flash components. To set this up in the pin muxing, it looks like IFC_A29:31 become IFC_RB2:4 and these pins are no longer available for NOR Flash addressing.

Is this correct?

 

What is the largest NOR device that can be addressed assuming IFC_A29:31 are not available and used as RB2:4?

i.e. will using ADM mode 0 with a shift of 3 allow the use of a 2 ** 29 - 512 Mbit NOR Flash or is there some other limit?

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