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  3. name of path timing change

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name of path timing change

nhanle
nhanle over 8 years ago

Hi all,

I have just start for Place & Route, and I have a problem,

After CTS step and CTS_opt step, I see the name of path timing has changed, but number of paths not change. For example,

- After CTS, I have a path timing: MICRO/INSTR_DECODER/IR_reg[7]/q    (v) triggered by  leading edge of 'CLKM' ---> MICRO/ACCUMULATORS/ACC_B_reg[15]/d (^) checked with  leading edge of 'CLKM'

- After CTS_opt, I don't see this path timing, I just have: TLATCH_BLOCK/TLATCH_9A/TLATCHCELL_0/TLOUT_reg/q (v) triggered by leading edge of 'CLKM' ---> MICRO/ACCUMULATORS/ACC_B_reg[15]/d   (v) checked with leading edge of 'CLKM'.

I don't understand why, hope anyone can help me this problem ?

 

Thanks,

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  • Kari
    Kari over 8 years ago
    are you just reporting the worst path? It is likely to be different before and after opt.
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  • nhanle
    nhanle over 8 years ago
    Thanks Kari
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