Hello,
in message 20040101035021.6532.qmail@web15001.mail.bjs.yahoo.com you wrote:
Is it _exactly_ the same design, with the same types of SDRAM chips?
Thanks you so much for your hints.I missed this key point.Yes,two chips of MT48LC16M16A2-75-B(1-1) on LITE_DW board with cs1 and two chips of MT48LC16M16A2-75-IT-C(2-2) on my board with cs1.I guess both are the same type.Am I right?
And the same CPU, same clock sources, etc. - all exactly the same?
Thanks for correcting my views on UPMA RAM WORD.I am studying on burst mode of SDRAM and hope it is the problem.
Usually (in 99% of all cases) it is.
encountering the headache,I sometimes suspect that there are some defaults on my hardware layout.Is it
Ther eit goes again. Please remember that we don't know your hardware design. Not the schematics, and neither the board layout.
possible that the same design with the same chips would have different results for technics reasons in some cases?
Of course this is possible. Poor production quality may make each board behave differently. It ain't much fun do debug such a system.
Best regards, and a Happy New Year!
Wolfgang Denk