Possible CPLD error insdie uPSD?

hg-chen · ‎2007-05-14

Posted on May 15, 2007 at 06:42

hg-chen · ‎2011-05-17

Posted on May 17, 2011 at 11:51

uPSD3234BV-24U6 is used,

check upload PSD code data seems to OK,

but execution abnormal,

in the program execution,address 01FFF0~01FFF4(FS3) data will be read,

but ''wrong data'' are got, the ''wrong data'' happended to be the data in address 01BFF0~01BFF4! notice that the address difference only in one bit,

what could be wrong in this situation?

CPLD hardware failure inside the uPSD?

wek2 · ‎2011-05-17

Posted on May 17, 2011 at 11:51

What is your memory map?

How did you verify what happened (perhaps post code here)?

Jan Waclawek