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choosing a decision between buffer and inverter in CTS

mmkrcool

Hi All,

 I am new to this forum.

Can somebody help me in choosing a decision for selecting  buffer and inverter in CTS.Infact i want to know when we will go for buffer and when we will go for inverter in Clock Tree Synthesis.

 And please help me in providing the info on Advantages and Disadvantages with each buffer and inverter in CTS.

 Thanks in Advance.

  • Generally, inverter have better transition time than buffer. Inverter pairs are also known to give better duty cycle (almost 50%) in most cases. Therefore, I would recommend to use inverter pair for CTS. Disadvantage, more placement space needed.

  • Hi potat0e,

     Thank you very much for your reply.

     Please can you give me much more explanation on how the buffer and inverter will affect the skew/latency in CTS with you real-time experience.It would be great if you provide me some clock tree reports (especially skew and latency  related) with buffer/inverter.(So far i have used buffers only in CTS for the last couple of designs and i never tried with inverters anyway).

     Thanks in advance.

    Best Regards,

    mmkrcool

     

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