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Visitor
shyking
Posts: 3
Registered: ‎01-17-2012
0

V7 hold timing failure

There is a hold timing failure between register to BRAM, the source register is close to the BRAM, so the data path delay is very small(0.052ns) ,but the BRAM Trckd is bigger than the data path delay (0.503ns), so the hold timing can't close. how can i resolve this problem ? thanks!

Xilinx Employee
smarell
Posts: 29
Registered: ‎07-23-2012

Re: V7 hold timing failure

The slack(hold) formula is

slack(hold)=requirement - (clock path skew + uncertainty - data path)

Hence, by reducing the clock path delay, you will be able to close the timing.
Newbie
muthyam
Posts: 1
Registered: ‎09-10-2012
0

Re: V7 hold timing failure

Delaying the clock is the best method to meet the hold requirement.
Xilinx Employee
sampatd
Posts: 46
Registered: ‎09-05-2011
0

Re: V7 hold timing failure

Can you post the timing report of the path that is failing hold?

 

Thanks.