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Altera_Forum
Honored Contributor I
1,470 Views

Reference Design, What should I do with DNI component??

I trying to design a board using the reference design of ALTERA cyclone V, I found many DNI components (resistors and capacitor), what i have to do with this components?, opened circuit? 

In the LPDDR2 schematic there are singal CK and CK# (clocks) have a resistor DNI between them, besides in this schematic i saw DQ[0..31] (data port ) have connected the DQ[16..31] connected to ground by resistors DNI? 

 

thanks in advance
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2 Replies
Altera_Forum
Honored Contributor I
252 Views

Hi Akael: 

 

DNI stands for Do Not Install: 

 

These components may have been placed on the schematic for many reasons. IE your DQ lines are probably because one version of the schematic only supported a 16 bit memory, while another supports the full 32 bit interface. 

 

The CK and CK# resistor is probably for termination. 

 

If you are confident you know what the resistor position is there, you can safely remove them from your schematic. 

 

Pete
EPalo4
Beginner
252 Views

Thanks Akael to make this question because the answer that Pete gave you helped me a lot thanks both.