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IMX6Q/D Muxed mode 16 bit NOR Flash interface

Question asked by Raj Nikumbh on Dec 24, 2013
Latest reply on Feb 18, 2014 by Jorge Ramirez

I am designing a IMX6Q/D/DualLite custom. I want to use NOR Flash as boot device and interfacing it using EIM. I need to use it in muxed mode putting external latches so that address and data can be latched and provided to the flash.

 

Address Bus - Address[0:15] is muxed with data and hence needs to be latched during the address cycle.Can EIM_LBA can be used enable the latching of the address bus.Address[16:25] is not muxed and available directly and may be given directly to the flash.

 

Data Bus- Data[0:15] is muxed with address bus and hence needs latching during data cycle .Since databus is bidirectional the buffer needs to have that information.Can I use EIM_RW for direction and EIM_EB0 and EIM_EB1 ored in order to enable the latch.

 

Please let me know if there is any other way of implementation for 16 bit Non-multiplexed flash interface. Is there a design implementation done so that it can referred. I checked Sabre lite and other schematics and they have non muxed implementation.

 

Regards

Raj

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