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Design Languages >> Verilog-AMS >> "No connection module found" error in a Verilog-AMS code of a PFD
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Message started by polyam on Oct 28^th, 2017, 4:47pm

Title: "No connection module found" error in a Verilog-AMS code of a PFD
Post by polyam on Oct 28^th, 2017, 4:47pm

Hi,

I am using the following Verilog AMS code as a Phase Frequency Detector(PFD) and the symbol has been correctly created.
--------------------------------------------------------------------------------------
//Verilog-AMS HDL

`include "constants.vams"
`include "disciplines.vams"
`timescale 10ps/1ps
module PFD (up,dn,fref,fdiv);

input fref;
input fdiv;
output up,dn;

wire fv_rst , fr_rst;
wire reset;
reg q0,q1;

assign fr_rst=reset | (q0&q1);
assign fv_rst=reset | (q0&q1);
assign reset=fref & fdiv;

always @ (posedge fdiv or posedge fv_rst) begin
if (fv_rst) q0<=0 ; else q0<=1;
end

always @ (posedge fref or posedge fr_rst) begin
if (fr_rst) q1<=0 ; else q1<=1;
end

assign up=q1;
assign dn=q0;

endmodule
---------------------------------------------------------------
I also created a test bench along with a Config view (Use Template --> Name: AMS).
In the ADE L, I switched to ams as a simulator.
Running the simulation gives me the following error:

---------------------------------------------------------------

Successfully compiled ('PLL' 'PFD_TB' 'schematic').
Compilation successful.

ncelab: *W,AMSNEWSFE: You have set the environment variable AMS_NEW_SFE. This is no longer needed as IUS 9.2 and above only works in new SFE mode.
Elaborating the design hierarchy:
ncelab: *N,SFEDPL: Deploying new SFE in analog engine.
Discipline resolution Pass...
net5 ), .dn( DN ), .up( UP ), .fref( net6 ) );
|
ncelab: *E,CUVNCM (./ihnl/PLL/PFD_TB/schematic/verilog.vams,20|3): No connection module found:Need an input port of continuous discipline electrical, and an output port of discrete discipline logic, at instance PFD_TB.I7.
net5 ), .dn( DN ), .up( UP ), .fref( net6 ) );
|
ncelab: *E,CUVNCM (./ihnl/PLL/PFD_TB/schematic/verilog.vams,20|40): No connection module found:Need an input port of continuous discipline electrical, and an output port of discrete discipline logic, at instance PFD_TB.I7.

Failed to elaborate ("PLL" "PFD_TB" "config").
---------------------------------------------------------------

I do appreciate any help :).

Tnx

Title: Re: "No connection module found" error in a Verilog-AMS code of a PFD
Post by polyam on Nov 2^nd, 2017, 8:09am

Problem solved!
To deal with this problem just include Affirma AMS connection module libraries.

Title: Re: "No connection module found" error in a Verilog-AMS code of a PFD
Post by polyam on Nov 2^nd, 2017, 8:11am

These libraries can be found in the following path
Cadencinstalldirectory/tools/inca
or
Cadencinstalldirectory/tools/