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tms320c6203 access sdram error.

Started by mike...@yahoo.com.cn January 19, 2008
Hi All, I have a board. one tms320c6203,one sdram(MT48LC4M32B2TG-7 IT),dual-ram.When production date of sdram is 0608,DSP access sdram ok.When poduction date of sdram is 0704,DSP access sdram error.For example DSP writes 0x55 to sdram,then DSP writes 0xaa to sdram.The data of sdram will remain 0x55.The data 0xaa
can not write in sdram.DSP should read SDRAM once.The data 0xaa can write in sdram.
Thanks
-mike
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