Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

DDR3, time quest & afi_half_clk freq.

I've a project with a DDR3L SDRAM controller (quartus 15.1) , using a afi_half_clk = 350/2Mhz for the avalon the interface. The project is working, and if a compare a counter with a 125MHz and the af...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

I have just repeat the test. In this case, I have included 3 counters:

1: with 125Mhz clock

2: with afi_half_rate clock

3: with afi_clk

Comparing the counters 2 and 3 with counter 1, the results has been

2 -> 163MHz

3 -> 330Mhz