Fixing large hold-time violation

[easyaspie]

We have a memory macro which is used within a synchronous circuit. The memory has a hold time of 35ns!! (350nm technology). Can the P&R tool (Encounter) fix this or do we have to fix this on the "functional" level?

Regards

 

[rca]

you could fix it with Encounter, but it could be great to fix in functional code.
the memory provider confirms this huge hold constraints?

 

[easyaspie]

Unfortunately, yes. It is something like "due to the internal state machine".

 

[kornukhin]

If your memory is clocking by one edge of clock you can simply use opposite edge to clock data/addr lines registers to fix hold violations.