Question

B .19 [5] <§B.4>The Verilog code on page B-53 is for a D flip-flop. Show the Verilog code for a D latch.

Short answer

The Verilog code for a D latch:

Step-by-step solution

Define the concept.

There are four components in the “D” latch. Such that- clock,D,Q,Qbar(~Q).

Where D” is the input and “Q” is the output, and “~Q” is the inverted output.

And the “clock” is acted as a clock in the latch.

Determine the calculation.

The given code:

module DFF(clock,D,Q,Qbar);

input clock, D;

output reg Q; // Q is a reg since it is assigned in an

always block

output Qbar;

assign Qbar = ~ Q; // Qbar is always just the inverse

of Q

always @(posedge clock) // perform actions whenever the

clock rises

Q = D;

Endmodule

And the required Verilog code for a D latch is shown below:

In the above latch, “D” is the input and “Q” is the output, and “ ~Q ” is the inverted output. A clock is also there in the “D” latch.