Dear Vivekaandan,

I suggest for you a link and attached files in topics

-Verilog HDL: Bidirectional Pin - Altera

https://www.altera.com/...examples/design.../verilog/ver_bidirec.ht...

Best regards

Bi-directional switch - like a feedback !!!

Then , consider a CLK with 2 phases or the edge transition then positive edge latches say to a flip-flop and neg edge is available at its Q .

This Q is sent to a buffer.

Verilog:

reg buf;

always @(posedge CLK)

begin Q=d; qbar=!Q;

end

always @(negedge CLK)

begin

buf=Q;

end

endmodule

PS- Check for proper declarations