[MOVED] Even binary counter from binary counter...................

[sunidrak]

hi ,
can anybody tell how to design or modify a binary counter(0,1,2,3,...) as a even counter counting (0,2,4,6....) ??

regards
Sunil

 

[vardan]

Re: Even binary counter from binary counter...................

Hi Sunil,
At what level do you design?
In general, append an additional bit with 0 value to the output of the binary counter.
For example, if you had 10-bit binary counter, you'll have 11-bit counter. LSB bit will be tied to 0.
assign cnt_out = {counter, 1'b0};

Regards,
Vardan

 

[sunidrak]

Re: Even binary counter from binary counter...................

hi vardan Sir,

I have a 4 bit binary counter , i want to modify it as a "even counter", means it should count only 0..2...4...6...8.....14..

 

[dillikumar406]

Re: Even binary counter from binary counter...................

you can just multiply normal binary number with 2'b10

 

[alexan_e]

Re: Even binary counter from binary counter...................

Is this related to CPLD/FPGA or hips of the 4000 or 7400 series ?

 

[vardan]

Re: Even binary counter from binary counter...................

This is binary counter output sequence:
0000, 0001, 0010, 0011, 0100,...
0 , 1 , 2 , 3 , 4 ,...

Just add a bit after LSB of the counter above, and tie it to 0.
00000, 00010, 00100, 00110, 01000,...
0 , 2 , 4 , 6 , 8 ,...

 

[dillikumar406]

Re: Even binary counter from binary counter...................

initialize out= 4'b0000
and then increment it by 2 as out =out +2'b10

or
increment the out number by 1'b0 and then left shift the result by 1'b1