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Altera_Forum
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15 years ago

ALTMEMPHY Debug GUI: Fails Read Resynch Phase Cal Rst

I'm debugging a DDR2 SO-DIMM design that doesn't work (the example top design seemingly doesn't do anything). I enabled the debug interface per the EMI handbook (debug section) and ran the Debug GUI....
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Altera_Forum
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15 years ago

Signal Integrity is still important at 200MHz. You could check your interface and see if the eye looks ok. The fact that the cal is failing at an early stage could be explained by bad SI.