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what is diff between Block based STA and path based STA

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venkatesankalidass

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dear all ,
in the figure


what is diff between Block based STA and path based STA

i have interview on monday please help me

regards
venkatesan.K
 

Path based STA is broadly used by current STA sign-off tool (Primetime, TimeCraft). Timing constraints will be checked at endpoint of the timing path.
the AT of endpoint should less than RT.

BLock Based STA:
timing constraints will be checked at each node of the timing path.
each node own its AT and RT. If its AT less than RT, timing is ok.

Hope helpful for you.

Gavin
 
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