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Altera_Forum's avatar
Altera_Forum
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17 years ago

Stratix III MLABs are slow

Hi, has anyone here any experience (like me) with Stratix III MLABs? They seem slow i.e. my design fmax seems limited by MLABs more than anythings else. I have all the timing constraints require...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I've already got that mode disabled - it's worse if I allow read during write.

The latest dataheet specifies 450MHz operation for MLABs regardless of mode for a C4 speed grade. I would have thought that 150MHz wouldn't be too much to ask even if the memory uses a number of MLABs.

Seriously, I would have thought someone from Altera would jumping into this thread to explain why I can't get the performance I need - even if it's to say that "it's your fault, you're asking to much of the circuitry and here's why".

I guess I'll have to file a service request.