VLSI Physical Design

Wednesday, September 30, 2015

Timing Exceptions

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When certain paths are not intended to operate according to the default setup/hold behavior assumed by PT,  you shoulf specify those paths a...

setup and hold checks

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Notes, Assume that the flip-flops are defined in the technology library to have a minimum setup time 1.0 time units and a minimum hold ti...
Tuesday, September 29, 2015

Cell Delay and Net Delay

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Cell Delay Cell Delay is the amount of delay from input to output of a logic gate in a path. PT calculates the cell delay from delay table...

Delay Calculation

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The total delay of a path is the sum of all cell and net delays in the path. The method od delay calculation depends on if chip layout has...

Path Types

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Path Types: --Clock path ( a path from a clock input port or cell pin, through one or moew buffers or inverters, to the  clock pin or a ...

timing paths

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timing paths In this figure, Each path starts at a data point, passes through some combinational logic, and ends at a data capture poin...

STA

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It is said as static because the timing information is obtain through calculation, not by simulation. STA analysis the delay of all paths...
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Xz VLSI
I share my notes for learning Backend VLSI. If you have any questions or thoughts, please feel free to let me know. I work as a Physical Design Engineer. Contact: 88physicaldesign@gmail.com
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