New PDF release: Verilog HDL : digital design and modeling
By Joseph Cavanagh
Emphasizing the precise layout of assorted Verilog initiatives, Verilog HDL: electronic layout and Modeling deals scholars an organization starting place at the subject material. The textbook provides the whole Verilog language via describing various modeling constructs supported via Verilog and via supplying a variety of layout examples and difficulties in every one bankruptcy. Examples comprise counters of other moduli, part adders, complete adders, a hold lookahead adder, array multipliers, forms of Moore and Mealy machines, and masses extra. The textual content additionally includes details on synchronous and asynchronous sequential machines, together with pulse-mode asynchronous sequential machines.
In addition, it presents descriptions of the layout module, the try bench module, the outputs received from the simulator, and the waveforms acquired from the simulator illustrating the full sensible operation of the layout. the place appropriate, a close evaluation of the topic's idea is gifted including good judgment layout rules, together with nation diagrams, Karnaugh maps, equations, and the good judgment diagram.
Verilog HDL: electronic layout and Modeling is a entire, self-contained, and inclusive textbook that incorporates all designs via to final touch, getting ready scholars to entirely comprehend this renowned description language.
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Extra info for Verilog HDL : digital design and modeling
34 Behavioral module for a 4-bit adder. 34. 35. 34. 5 showed the gate-level design of a modulo-16 synchronous counter. The same counter will now be designed using behavioral modeling. This is a much simpler approach because the counter is not designed using Karnaugh maps and equations to provide discrete logic gates and flip-flops. Also, the storage elements are not specified. Verilog is simply given the counting sequence; the counter is then designed by Verilog according to the specifications.
Notice that the inputs change value every 10 time units and that the duration of simulation is 40 time units. The time units can be specified for any duration. The Verilog syntax will be covered in greater detail in subsequent chapters. It is important at this point to concentrate on how the module under test is simulated and instantiated into the test bench. 13 gate. 12 for a 2-input AND gate. 4 Modules and Ports 19 Several different methods to generate test benches will be shown in subsequent sections.
31 delays. 31. 3. A similar 4-bit adder will now be designed using behavioral modeling to illustrate the differences between the two modeling techniques. 33 depicts the block diagram of the adder, but does not indicate the internal logic. 34 shows the behavioral module for the 4-bit adder. Note that only the behavior of the adder is specified, not the internal logic elements as in the structural architecture. The behavior is specified as: sum = a + b + cin The behavioral module does not indicate the specifics as to how to design the adder; the Verilog code simply specifies the functionality of the module.
Verilog HDL : digital design and modeling by Joseph Cavanagh