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verilog-A model for binary-to-thermometer decoder

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sharkies

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I am writing a verilog-A model for binary-to-thermometer decoder. NOT verilog!
For a beginner like me, this is quite tough...
I think I keep getting confused with all the verilog, verilog-ams, verilog-A syntax :cry:
compile errors everywhere,,
Really frustrating


I take a 3bit input, and need to output a 8bit...
I wrote a code that counts the total number of thermometer output signal that needs to be high


can somebody help me out ugh..
 

JoannesPaulus

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You can easily do it the generate construct, in the analog block. You first need to convert your binary input (say in[2:0]) into an integer (say sum) and then use a for loop as in the snippet below.
Code:
analog begin
	sum = 0;
	generate i (0,2)
		sum=sum+((V(in[i])>VT)?1:0)*pow(2,i);
	
	for (i=0; i<=7; i=i+1)
		if(i<sum)
			out_v[i]=1;
		else
			out_v[i]=0;
	
	generate i (7,0)
		V(out[i])<+transition(out_v[i],TD,TR,TF);
end
I guess you can put together the module...
 

sharkies

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Thank a bunch, problem solved :)
 

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