How to calculate the timing results

[limitless_21]

how will we justify for the following time calculation:


Other End Arrival Time 110.000
- Setup 90.400
+ Phase Shift 794.000
+ CPPR Adjustment 0.000
- Uncertainty 106.000

= Required Time 707.600

- Arrival Time 1308.240

= Slack Time -600.640

Clock Rise Edge 0.000
+ Clock Network Latency (Ideal) 110.000
= Beginpoint Arrival Time 110.000


How is the required time being calculated here as 707.600, when i am calculating it is coming around 710 ns.
please do poin me where am i going wrong ????

thanks
limitless

 

[vijay.mani884]

Kindly, post the report if possible for better visibility of the problem.

cheers

 

[kopern1k]

Arrival Time+Phase Shift-Setup requirements-uncertainty = required time.

So if you plug your numbers, you'll get 707.6. But even if it was 710, you'd get a negative slack, which you should fix.

Or you asking about where the numbers come from?

 

[vijay.mani884]

well, dude, lets us put it lil simple. kindly, brief, which check you are performing? setup/hold? first of all, tell that. I have a doubt regarding the formula that you have written. may be am wrong!!! so it would be better if you tell me which check your are performing?

I think that might help, to solve your problem.