Microsoft Word - Digital Logic Design v_4_6a
“Bed-of-Nails” and “In-Circuit” Testing In a digital circuit that is on a PC board (PCB), most manufacturers use a cushion of ...
further research by the reader. ...
6.5. Additional Resources TBC ...
6.6. Problems Refer to http://www.EngrCS.com or online course page for complete solved and unsolved problem set. ...
Chapter 7 “Verilog”. Verilog Hardware Description Language (Verilog) 7.1. Key concepts and Overview History Introduction to ...
7.2. History Hardware Description Language (HDL) is used by designers to describe circuit functionality in high level language. ...
7.3. Introduction to Verilog HDL................................................................................................ ...
SOLUTION: Now, the Verilog code that describes the D flip flop design: `timescale 1ns/100ps // time measurement unit is 1 nsec w ...
7.4. Syntax Verilog HDL Syntax is similar to C programming Language. Below are some of the Verilog basic language syntax: Iden ...
Number Representation Number may be represented in decimal form with or without sign (+12 or -24). Additionally, Verilog allow ...
// system definition in terms of external port (input and output) input inPort1, ... ; // Ports inPort1, ... are set as inputs w ...
7.5. Assignments Verilog understand that there two types of element in digital design: Combinational – gates and other circuit ...
Below is usage example in a module: Always statement “always ” Always block not only executes always (on going) as the name im ...
If modify the above code by adding a sensitivity list which includes Bin and a clk. now the always block will only be executed w ...
change. in the following example the assignment is only triggered when the positive edge of clk is encountered. As you can see t ...
7.6. Operators This section provides an overview of logical, relational, arithmetic and other operators. Note that this a sampli ...
Symbol Operation * Multiply / Divid + Add Subtract % Modulus Others Here are a couple of useful ones: Concatenation “{}” A ...
7.7. Types and Variable Declarations Verilog requires explicit declaration of variables which means before using a variable it m ...
Example - time thisTime; // declare thisTime to store time Any of the types may be groups as arrays by adding by adding modifi ...
7.8. Flow Control Statements Verilog much like C programming languages provides a wide variety of flow control statement. This s ...
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