VHDL – MUX implementation using an array structure Figure 2 – RTL and technology view for SELECT implementation of a 4-way MUXįigure 3 – RTL and technology view for SEQUENTIAL implementation of a 4-way MUXįigure 4 – RTL and technology view for a simple CONCURRENT implementation of a 4-way MUX As clear, the circuit implementation is the same for both different VHDL coding style even if the RTL view can be different.
MUX 4X1 VERILOG PROGRAMME BY USING 2X1 TEST BENCH CODE
In Figure 2, Figure 3, Figure 4, are reported the implementation on Cyclone IV FPGA of the sequential and concurrent implementation of the VHDL code reported above. MUX description using simple CONCURRENT VHDL statement MUX description using SELECT VHDL statementĪnother VHDL description of a 4-way mux using a concurrent representation is given below library IEEE Here below is represented a 4-way mux using a concurrent representation of SELECT statement library IEEE MUX description using SEQUENTIAL VHDL statement Here below is represented a 4-way mux using a sequential representation library IEEE You can use concurrent or sequential depending on your coding style. Using the VHDL we have basically two different ways to describe a digital MUX:īoth the descriptions are totally equivalent and implement the same hardware logic.
The digital MUX is one of the basic building blocks of a digital design. The number near the input ports indicates the selector value used to route the selected input to the output port. On the left side of the Figure1, you can see the typical MUX representation. An analog multiplexer implements the same function as digital MUX selecting the source of a signal from different analog source instead of digital.Īs clear in Figure1, a MUX can be visualized as an n-way virtual switch whose output can be connected to one of the different input sources. We name it digital multiplexer, to distinguish it from an analog multiplexer. This selection logic is called digital multiplexer or MUX.
When we implement a digital hardware architecture, we often need to select an input to our logic between several different inputs. If you don’t receive the email, please check your SPAM folder, enjoy! What is a MUX?
There is no need to post a comment asking me for the code 🙂 Before reading the post, if you need the VHDL code example of the Digital MUX, just put your email in the box you find in the post.
0 kommentar(er)
