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What to do with unconnected PS pins of Zynq

Question asked by NilsMinor on Aug 1, 2018
Latest reply on Aug 2, 2018 by CsomI

Hi,

 

I have an unconnected port of the PS of my Zynq (ddr3_dm)

 

The system_wrapper requires this port which is defined like this "inout [3:0]ddr_dm;"

 

In my system_top i tried the following to things:

 

1. In system_wrapper 

  (* keep="soft" *) wire [3:0] unconnected_ddr3_dm;

 

...

.ddr3_we_n (ddr3_we_n),

.ddr3_dm(unconnected_ddr3_dm),    <- gives me critical warning [netlist 29-160] in system_axi_ddr_cntrl_0.xdc

.ddr_addr (ddr_addr),

...

 

2. Thing I tried:

...

.ddr3_we_n (ddr3_we_n),

.ddr3_dm( ),    <- gives me critical warning [netlist 29-160] in system_axi_ddr_cntrl_0.xdc

.ddr_addr (ddr_addr),

...

 

 

How can I avoid the critical warning after implementation ?

 

Thanks,

Nils

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