AR# 45841


14.3 EDK - Can I use the EMC with Little Endian Flash Devices?


Both the AXI and PLB External Memory Controllers (EMC) communicate to flash devices in Big Endian format. Can I change this?


You can communicate to Little Endian flash devices by swapping the appropriate data and address lines at the top level of your XPS design. No HDL modification should be necessary. The EMC data sheets (both AXI and PLB) give an example of how to connect the EMC to Intel StrataFlash; you can find this document under $XILINX_EDK/hw/XilinxProcessorIPLib/pcores/[AXI or XPS EMC]/doc

Note that while the AXI interconnect will communicate to the EMC via Little Endian, the AXI EMC core will still communicate to the flash device in Big Endian format.

AR# 45841
Date 12/15/2012
Status Active
Type General Article
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