JAJSTJ4A June 2022 – March 2024 TMS570LC4357-SEP
PRODUCTION DATA
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The EMIF includes many features to enhance the ease and flexibility of connecting to external asynchronous memories or SDRAM devices. The EMIF features includes support for:
The EMIF is inherently BE8, or byte invariant big endian. This device is BE32, or word invariant big endian. There is no difference when interfacing to RAM or using an 8-bit wide data bus. However, there is an impact when reading from external ROMs or interfacing to hardware registers with a 16-bit wide data bus. The EMIF can be made BE32 by connecting EMIF_DATA[7:0] to the ROM or ASIC DATA[15:8] and EMIF_DATA[15:8] to the ROM or ASIC DATA[7:0].
Alternatively, the code stored in the ROM can be linked as -be8 instead of -be32.
For a 32-bit access on the 16-bit EMIF interface, the lower 16-bits (the EMIF_BA[1] will be low) will be put out first followed by the upper 16-bits (EMIF_BA[1] will be high).