CDCLVC1103: Clock buffer usage example

Hello Conor,

Conor said:

I am considering whether it will work fine with just one oscillator for multiple ASICs, or whether it would be better to use a clock buffer.

For multiple ASICs, you for sure want one oscillator given the reference to a buffer and that buffer fanning out that frequency to multiple ASICs. If you only use one oscillator and route that signal to multiple ASICs, the swing/amplitude of your clock will change and therefore, may violate the swing requirements and add more noise for the clock being fed into the ASICs.

Conor said:

When do you need a clock buffer?

In other words, this is a perfect example of when you would need a buffer. When you are trying to create several multiples of the same frequency. Let me know if you have any other questions.

Good luck!

Andrea