[SOLVED] Should I use 2 stage synchronizer before or after debouncer detected

[keyurd83]

Hello,

I am implementing a clock on Nexys 2(Spartan 3e) FPGA, where I am using Push Button as a asynchronous Reset.
But I am confused where I should use 2 Stage Synchronizer to synchronize the asynchronous Reset with clock.
Should I use it before the Debouncer code or should I use it after Debouncer code.

Would kindly appreciate your help.

Thank you.

 

[mrflibble]

first synchronize it, then debounce it. Your debouncer is synchronous logic running in your favorite clock domain, so you first have to get the button input into that clock domain.

 

[keyurd83]

Thank you very much