Verilog multiplexer

1. What is multiplexer in Verilog?
2. Can you write a mux without an always block?
3. What is a 2 1 mux?
4. What does the mux4_1 circuit do?
5. What is 4x1 multiplexer?
6. How does multiplexer circuit work?
7. Why is always used in Verilog?
8. What does always * mean in Verilog?
9. What is IC 74153?
10. How do you make and use MUX?
11. What is the use of Verilog HDL?
12. What are logic gates?
13. What is enable in multiplexer?

What is multiplexer in Verilog?

A multiplexer is a device that selects one output from multiple inputs. It is also known as a data selector. It allows us to squeeze multiple data lines into one data line. ... It switches between one of the many input lines and combines them one by one to the output.

Can you write a mux without an always block?

We can also use assign statement instead of writing always block. This example is gate level implementation of the multiplexer.

What is a 2 1 mux?

A 2-to-1 multiplexer consists of two inputs D0 and D1, one select input S and one output Y. Depending on the select signal, the output is connected to either of the inputs. Since there are two input signals, only two ways are possible to connect the inputs to the outputs, so one select is needed to do these operations.

What does the mux4_1 circuit do?

This device is a 4-line-to-1-line multiplexer. ... Multiplexers are also known as data selectors. This 4-input multiplexer can select 1 bit of data from up to four sources selected by Select inputs (S0, S1). The 4-input multiplexer circuit has active-Low Enables (~EN) which can be used to strobe the output.

What is 4x1 multiplexer?

4x1 Multiplexer has four data inputs I₃, I₂, I₁ & I₀, two selection lines s₁ & s₀ and one output Y. ... One of these 4 inputs will be connected to the output based on the combination of inputs present at these two selection lines. Truth table of 4x1 Multiplexer is shown below.

How does multiplexer circuit work?

A multiplexer is a system of multiple inputs and just one output to receive signals coming from multiple acquisition networks. The device transfers all input signals to a microprocessor, which receives and processes the data, transmits it to the output devices, and controls the system as a whole.

Why is always used in Verilog?

What is the always block used for ? An always block can be used to realize combinational or sequential elements. A sequential element like flip flop becomes active when it is provided with a clock and reset. Similarly, a combinational block becomes active when one of its input values change.

What does always * mean in Verilog?

SystemVerilog introduced the logic data type to replace Verilog's reg data type. ... A reg signal is typically the output of a flipflop, a latch, or combinational logic that appears in an always @(*) block. If a specific data type is not declared, a signal defaults to wire.

What is IC 74153?

74153 is a data multiplexer or data selector IC. It has inverters and drivers that supply fully complementary data selection to the AND-OR-NOT gates. It also has on-chip and binary decoding. It has 2 1 of 4 data multiplexer in one IC package.

How do you make and use MUX?

We can achieve this by making B as '0'. We can tie B input of MUX to zero. Thus we can get an AND gate by tying B input of MUX to zero, resulting circuit is AND gate which ANDs input A and mux select S. Following figure shows this arrangement.

What is the use of Verilog HDL?

You can use Verilog HDL for designing hardware and for creating test entities to verify the behavior of a piece of hardware. Verilog HDL is used as an entry format by a variety of EDA tools, including synthesis tools such as Quartus^® Prime Integrated Synthesis, simulation tools, and formal verification tools.

What are logic gates?

Logic gates are the basic building blocks of any digital system. It is an electronic circuit having one or more than one input and only one output. The relationship between the input and the output is based on a certain logic. Based on this, logic gates are named as AND gate, OR gate, NOT gate etc.

What is enable in multiplexer?

An enable input makes the multiplexer operate. When EN = 0, the output is High-Z or less commonly LOW (depending on the specific device). When EN = 1, the multiplexer performs its operation depending on the selection line.