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DM355 Boot modes

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The ROM bootloader only supports NAND/MMC-SD/UART; However DM355 also supports direct AEMIF Boot for OneNAND using BTSEL[0:1] =10 option. The DM355 EVM does not support the AEMIF-NOR boot mode as it does not have any NOR memory on board. There is nothing preventing the user for using a NOR flash instead of the OneNAND, however there is a big limitation of only 16 AEMIF address lines available which will limit the NOR to an 8bit 64Kbyte/Chip select or 16bit 128kbyte/chip select (at EMIF half rate). This is one of the primary reasons we don’t specifically spell out support for NOR boot via the AEMIF direct boot.

The AECFG[3:0] pins configuration that they will have to select if they attach a NOR instead of a OneNAND, for 8bit=AECFG=1000, and for 16bit=AECFG=0010.

Also note that for AEMIF boot, the OneNAND must be connected to the first AEMIF chip select space (EM_CE0). Also, the AEMIF does not support direct execution from NAND Flash.

See also:

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C2000=For technical support on the C2000 please post your questions on The C2000 Forum. Please post only comments about the article DM355 Boot modes here. DaVinci=For technical support on DaVincoplease post your questions on The DaVinci Forum. Please post only comments about the article DM355 Boot modes here. MSP430=For technical support on MSP430 please post your questions on The MSP430 Forum. Please post only comments about the article DM355 Boot modes here. OMAP35x=For technical support on OMAP please post your questions on The OMAP Forum. Please post only comments about the article DM355 Boot modes here. OMAPL1=For technical support on OMAP please post your questions on The OMAP Forum. Please post only comments about the article DM355 Boot modes here. MAVRK=For technical support on MAVRK please post your questions on The MAVRK Toolbox Forum. Please post only comments about the article DM355 Boot modes here. For technical support please post your questions at http://e2e.ti.com. Please post only comments about the article DM355 Boot modes here.

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