Why output is reg in Verilog?

reg and wire specify how the object will be assigned and are therefore only meaningful for outputs. If you plan to assign your output in sequential code,such as within an always block, declare it as a reg (which really is a misnomer for “variable” in Verilog). Otherwise, it should be a wire , which is also the default.

What is the difference between reg and wire in Verilog?

wire is a physical wire when your verilog code is synthesized. reg is a verilog data type that can be synthesized into either sequential or combinational logic depending on how you code it. This is verilog 101.

What is the difference between a wire and reg type?

wire elements must be continuously driven by something, and cannot store a value. Henceforth, they are assigned values using continuous assignment statements. reg can be used to create registers in procedural blocks. Thus, it can store some value.

What determines the output of a combinational circuit?

The outputs of Combinational Logic Circuits are only determined by the logical function of their current input state, logic “0” or logic “1”, at any given instant in time. In other words, in a Combinational Logic Circuit, the output is dependant at all times on the combination of its inputs.

What is wire in Verilog code?

wire elements are used to connect input and output ports of a module instantiation together with some other element in your design. wire elements are the only legal type on the left-hand side of an assign statement. 6. wire elements are a stateless way of connecting two peices in a Verilog-based design.

What is wire VHDL?

In Verilog, a wire is a resolved signal that may have multiple. drivers, or sources. An output port is a wire. A wire cannot be driven. from a an always block.

Is Reg a data type in Verilog?

Verilog reg is probably the most common variable data type. Verilog reg is generally used to model hardware registers (although it can also represent combinatorial logic, like inside an always@(*) block). Other variable data types include integer, time, real, realtime.

What is a wire Verilog?

wire elements are used to connect input and output ports of a module instantiation together with some other element in your design. 2. wire elements are used as inputs and outputs within an actual module declaration. wire elements are a stateless way of connecting two peices in a Verilog-based design.

What makes a circuit combinational?

The combinational circuit do not use any memory. The previous state of input does not have any effect on the present state of the circuit. A combinational circuit can have an n number of inputs and m number of outputs.

What is a circuit output?

The output circuit is composed of a voltage source and a series resistance (ro). You can think of this as the Thevenin equivalent for the internal circuitry of the op amp. The internal voltage source has a value of AVvi.