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Altera_Forum
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12 years ago

TimeQuest Timing Analyzer[Setup slack analysis]

HI, I am trying to understand how the Time Quest analyzer calculating required setup and hold time.I have written code for register and the clocks are common(50 MHz). As per my understanding da...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

As you wrote "setup slack = clock arrival time -Tsu - Setup Uncertainty".

Setup uncertainty = 0.2 ns

Tsu = -0.21 ns

So, you get

setup slack = clock arrival time -(-0.21) -0.2 = clock arrival time +0.21 -0.20

The incr colum is the slack's increment. So, it lists +0.21 and - 0.20 respectively.