Passing data from faster clock to slower clock registers

[Altera_Forum]

Hello all! 

 I am pretty sure this topic is pretty much covered until now but it seems that I was in vacation.  So, I have a 150MHz clock that clocks my data and I need to pass that data to a register clcoked at a 100MHz clock but I seem to get a timing error.  Is there any standard way to do that?  Thanks in advance

[Altera_Forum]

Yes, there are standard ways ... 

 http://www.edn.com/design/systems-design/4333702/crossing-the-abyss-asynchronous-signals-in-a-synchronous-world  Cheers, Dave

[Altera_Forum]

Use an asynchronous FIFO, for multiple bit data this is the savest way.

[Altera_Forum]

Wow Dave that was a really interesting article!!! Thanks to schmalisch too! 

 As I see it, if I go develop a new handshaking logic then I think that I reinvent the wheel so I will go for the asynchronous FIFO. I am pretty sure ALTERA IP already has this thingy but I couldnt find it. So how can I instantiate an ALTERA asynchronous FIFO? Is it through the MegaCore?  Thanks again!

[Altera_Forum]

You are right, the FIFO IP cores can be found in the MegaCore Wizard.

[Altera_Forum]

--- Quote Start ---  Wow Dave that was a really interesting article!!!  --- Quote End ---   I thought so too :)    --- Quote Start ---   I will go for the asynchronous FIFO.  --- Quote End ---    This thread contains a zip file with Modelsim simulation examples ...  http://www.alteraforum.com/forum/showthread.php?t=38988  Cheers, Dave