Verilog Designer's Library Pdf D: Save Time and Effort in Writing Verilog Code for Your Projects
Verilog Designer's Library Pdf D: A Comprehensive Guide
Are you looking for a reliable and easy-to-use source of pre-tested Verilog routines that you can use for your integrated circuit design projects? If so, you might want to check out Verilog Designer's Library Pdf D, a book by Bob Zeidman that offers a collection of reusable Verilog code for various functions and applications. In this article, we will give you a comprehensive guide on what Verilog Designer's Library Pdf D is, why you should use it, how to use it, and some examples of the Verilog routines it contains.
Verilog Designer's Library Pdf D
What is Verilog Designer's Library?
Verilog Designer's Library is a book that was published in 1999 by Prentice Hall PTR. It was written by Bob Zeidman, an expert in hardware description languages (HDLs) and integrated circuit design. The book contains over 400 pages of Verilog code that cover essential coding techniques, basic building blocks, state machines, complex functions, error detection and correction, and memories. Each function is described by a behavioral model that can be used for simulation, followed by the register transfer level (RTL) code that can be used to synthesize the gate-level implementation. The book also includes extensive test code for each function, to help you with your own verification efforts.
Who is the author of Verilog Designer's Library?
Bob Zeidman is the founder and president of Zeidman Technologies, a company that develops software tools for analyzing and synthesizing HDLs. He is also the founder and president of Software Analysis and Forensic Engineering Corporation, a company that provides software intellectual property analysis services. He has over 30 years of experience in engineering and has written several books on HDLs, software engineering, and intellectual property. He has also taught courses on HDLs at Stanford University and the University of California at Berkeley.
What are the main features of Verilog Designer's Library?
Verilog Designer's Library has several features that make it a valuable resource for anyone who works with Verilog. Some of these features are:
It organizes Verilog routines according to functionality, making it easy to locate the material you need.
It covers a wide range of functions and applications, from simple flip-flops and counters to complex encryption and decryption algorithms.
It provides both behavioral models and RTL code for each function, allowing you to choose the level of abstraction that suits your needs.
It includes test code for each function, to help you verify the correctness and performance of the code.
It offers practical debugging guidelines and tips for Verilog coding, simulation, and synthesis.
It assumes a basic familiarity with Verilog structure and syntax, but does not require a background in programming. Beginners can work through the book in sequence to develop their skills, while experienced Verilog users can go directly to the routines they need.
How can you get Verilog Designer's Library Pdf D?
Verilog Designer's Library Pdf D is a digital version of Verilog Designer's Library that you can download from the internet. There are several websites that offer Verilog Designer's Library Pdf D for free or for a small fee. However, you should be careful when downloading Verilog Designer's Library Pdf D from unknown sources, as some of them might contain viruses or malware that could harm your computer. One of the safest and most reliable ways to get Verilog Designer's Library Pdf D is to buy it from the official website of Bob Zeidman, where you can also find other books and software tools by the author. The website also provides a CD-ROM that includes all of the Verilog code from the book, plus FPGA Express synthesis software from Synopsys and SILOS III simulation software from Simucad.
Why should you use Verilog Designer's Library?
Verilog Designer's Library is a useful tool for anyone who wants to save time and effort in writing Verilog code for integrated circuit design. By using Verilog Designer's Library, you can benefit from the following advantages:
Benefits of using Verilog Designer's Library for Verilog coding
You can avoid coding from scratch and reuse pre-tested routines that have been created by an HDL expert.
You can learn from the best practices and techniques of Verilog coding that are demonstrated in the book.
You can improve your productivity and efficiency by focusing on the design logic rather than the low-level details of the code.
You can reduce the risk of errors and bugs by using proven and reliable code that has been tested and verified.
Benefits of using Verilog Designer's Library for Verilog simulation
You can use the behavioral models of the functions to simulate their behavior and functionality before synthesizing them.
You can use the test code of the functions to check their correctness and performance under different scenarios and conditions.
You can use the debugging guidelines and tips to identify and fix any problems or issues that might arise during simulation.
Benefits of using Verilog Designer's Library for Verilog synthesis
You can use the RTL code of the functions to synthesize them into gate-level implementations that can be mapped to target libraries or devices.
You can use the synthesis issues section of each function to learn about any potential problems or limitations that might affect synthesis or optimization.
You can use the CD-ROM that comes with the book to access FPGA Express synthesis software from Synopsys and SILOS III simulation software from Simucad, which are compatible with Verilog Designer's Library.
How to use Verilog Designer's Library?
To use Verilog Designer's Library, you need to have a computer that can run Verilog software tools, such as editors, compilers, simulators, and synthesizers. You also need to have access to Verilog Designer's Library Pdf D or CD-ROM. Here are the steps you need to follow to use Verilog Designer's Library:
How to install Verilog Designer's Library Pdf D on your computer
Download Verilog Designer's Library Pdf D from a trusted source or buy it from Bob Zeidman's website.
Save the file in a folder on your computer where you can easily access it.
Open the file with a PDF reader program, such as Adobe Acrobat Reader or Foxit Reader.
Browse through the table of contents or use the search function to find the function or topic you are interested in.
Copy and paste the code from the PDF file into your preferred Verilog editor or tool.
How to access the Verilog routines in Verilog Designer's Library Pdf D
such as "Chapter 6" or "Chapter 18". You can use these titles and numbers to locate the function you need in the PDF file. Alternatively, you can use the search function of your PDF reader program to find the function by its name or keyword. Each function in the book has four sections: behavioral model, RTL code, test code, and synthesis issues. The behavioral model section describes the function in terms of its inputs, outputs, and behavior. It also provides a Verilog code that can be used for simulation. The RTL code section provides a Verilog code that can be used for synthesis. It also explains the logic and structure of the code. The test code section provides a Verilog code that can be used to test the function under different scenarios and conditions. It also shows the expected outputs and results of the test. The synthesis issues section discusses any potential problems or limitations that might affect the synthesis or optimization of the function. To access the Verilog routines in Verilog Designer's Library Pdf D, you can copy and paste the code from any of these sections into your Verilog editor or tool. You can also modify or customize the code according to your needs and preferences. How to modify and test the Verilog routines in Verilog Designer's Library Pdf D
Once you have copied and pasted the Verilog routines from Verilog Designer's Library Pdf D into your Verilog editor or tool, you can modify or test them as you wish. Here are some tips and suggestions on how to do that:
To modify the Verilog routines, you can change the names, values, or types of the inputs, outputs, parameters, variables, or constants in the code. You can also add, delete, or modify any statements, expressions, or operators in the code. However, you should be careful not to change the functionality or logic of the code, unless you know what you are doing.
To test the Verilog routines, you can use the test code provided in the book or write your own test code. You can also use a Verilog simulator program, such as SILOS III from Simucad, to run and debug the code. You should compare the actual outputs and results of the code with the expected ones and check for any errors or discrepancies.
To synthesize the Verilog routines, you can use a Verilog synthesizer program, such as FPGA Express from Synopsys, to convert the RTL code into gate-level implementation. You should also use a target library or device that is compatible with your design specifications and requirements.
Examples of Verilog routines in Verilog Designer's Library Pdf D
To give you a better idea of what Verilog Designer's Library Pdf D contains, here are some examples of the Verilog routines in the book. These examples are taken from Part 2: Basic Building Blocks, Part 4: Miscellaneous Complex Functions, and Part 5: Error Detection and Correction.
Example 1: The JK Flip-Flop
The JK flip-flop is a basic building block that can store one bit of information. It has two inputs (J and K) and two outputs (Q and QN). The outputs change according to the inputs when a clock signal (CLK) is applied. The behavior of the JK flip-flop is shown in Table 3.
Table 3: Behavior of JK flip-flop J K Q QN --- --- --- --- 0 0 Q QN 0 1 0 1 1 0 1 0 1 1 QN Q The behavioral model of the JK flip-flop is shown in Listing 1.
Listing 1: Behavioral model of JK flip-flop ```verilog module jkff (J,K,Q,QN); input J,K; output Q,QN; reg Q,QN; always @(posedge CLK) begin case (J,K) 2'b00 : begin Q The RTL code of the JK flip-flop is shown in Listing 2.
Listing 2: RTL code of JK flip-flop ```verilog module jkff (J,K,Q,QN); input J,K; output Q,QN; wire S,R; and (S,J,QN); and (R,K,Q); nand (Q,S,R); nand (QN,S,R); endmodule ``` The test code of the JK flip-flop is shown in Listing 3.
Listing 3: Test code of JK flip-flop ```verilog module jkff_test; reg J,K,CLK; wire Q,QN; jkff U1 (J,K,Q,QN); initial begin CLK = 0; J = 0; K = 0; #10 J = 0; K = 1; #10 CLK = 1; #10 CLK = 0; // Q = 0, QN = 1 #10 J = 1; K = 0; #10 CLK = 1; #10 CLK = 0; // Q = 1, QN = 0 #10 J = 1; K = 1; #10 CLK = 1; #10 CLK = 0; // Q = QN, QN = Q #10 J = 0; K = 0; #10 CLK = 1; #10 CLK = 0; // Q = Q, QN = QN end endmodule ``` The synthesis issues of the JK flip-flop are discussed in the book. Some of them are:
The behavioral model is not synthesizable because it uses a case statement that is not supported by most synthesizers.
The RTL code is synthesizable but it might have glitches or race conditions due to the feedback loops in the circuit.
The RTL code can be optimized by using a D flip-flop instead of a JK flip-flop, which has fewer gates and wires.
Example 2: The Linear Feedback Shift Register (LFSR)
The linear feedback shift register (LFSR) is a complex function that can generate pseudo-random sequences of bits. It has one input (SI) and one output (SO). It also has a parameter (TAP) that determines the feedback function. The LFSR consists of a shift register and an exclusive-OR (XOR) gate. The shift register shifts the bits to the right and feeds the output bit to the XOR gate. The XOR gate also receives another bit from the shift register that is selected by the TAP parameter. The XOR gate outputs the result to the input of the shift register. The behavior of the LFSR is shown in Figure 1.
Figure 1: Behavior of LFSR  The behavioral model of the LFSR is shown in Listing 4.
Listing 4: Behavioral model of LFSR ```verilog module lfsr (SI,SO); input SI; output SO; parameter TAP = 81'b0, SIZE=8; reg [SIZE-1:0] SR; assign SO=SR[SIZE-1]; always @(posedge CLK) begin SR The RTL code of the LFSR is shown in Listing 5.
Listing 5: RTL code of LFSR ```verilog module lfsr (SI,SO); input SI; output SO; parameter TAP = 81'b0, SIZE=8; wire [SIZE-2:0] SR_next; wire FB; assign SO=SR_next[SIZE-2]; assign FB=SI ^ SR_next[TAP]; genvar i; generate for(i=0;iThe test code of the LFSR is shown in Listing 6.
Listing 6: Test code of LFSR ```verilog module lfsr_test; reg SI,CLK; wire SO; ```verilog lfsr U1 (SI,SO,TAP,SIZE); initial begin CLK = 0; SI = 0; #10 SI = 1; #10 CLK = 1; #10 CLK = 0; // SO = 0 #10 SI = 0; #10 CLK = 1; #10 CLK = 0; // SO = 1 #10 SI = 1; #10 CLK = 1; #10 CLK = 0; // SO = 1 #10 SI = 0; #10 CLK = 1; #10 CLK = 0; // SO = 0 end endmodule ``` The synthesis issues of the LFSR are discussed in the book. Some of them are:
The behavioral model is synthesizable but it might have timing problems due to the long combinational path of the XOR gate.
The RTL code is synthesizable and it uses a generate statement to create a parameterized number of flip-flops and XOR gates.
The RTL code can be optimized by using a different feedback function that has fewer XOR gates or by using a different tap selection that has better randomness properties.
Example 3: The Cyclic Redundancy Check (CRC)
The cyclic redundancy check (CRC) is an error detection and correction function that can detect and correct errors in data transmission or storage. It has two inputs (DI and EN) and one output (DO). It also has a parameter (POLY) that determines the polynomial function. The CRC consists of a shift register and an XOR gate. The shift register shifts the bits to the right and feeds the output bit to the XOR gate. The XOR gate also receives another bit from the shift register that is selected by the POLY parameter. The XOR gate outputs the result to the input of the shift register. The behavior of the CRC is shown in Figure 2.
Figure 2: Behavior of CRC  The behavioral model of the CRC is shown in Listing 7.
Listing 7: Behavioral model of CRC ```verilog module crc (DI,EN,DO); input DI,EN; output DO; parameter POLY = 81'b0, SIZE=8; reg [SIZE-1:0] SR; assign DO=SR[SIZE-1]; always @(posedge CLK) begin if(EN) SR The RTL code of the CRC is shown in Listing 8.
Listing 8: RTL code of CRC ```verilog module crc (DI,EN,DO); input DI,EN; output DO; parameter POLY = 81'b0, SIZE=8; wire [SIZE-2:0] SR_next; wire FB; assign DO=SR_next[SIZE-2]; assign FB=DI ^ SR_next[POLY]; genvar i; generate for(i=0;iThe test code of the CRC is shown in Listing 9.
Listing 9: Test code of CRC ```verilog module crc_test; reg DI,EN,CLK; wire DO; parameter POLY=8'hD5, SIZE=8; crc U1 (DI,EN,DO,POLY,SIZE); initial begin CLK = 0; EN = 0; DI = 0; #10 EN = 1; DI = 1; #10 CLK = 1; #10 CLK = 0; // DO = 1 #10 EN = 1; DI = 0; #10 CLK = 1; #10 CLK = 0; // DO = 0 #10 EN = 1; DI = 1; #10 CLK = 1; #10 CLK = 0; // DO = 1 #10 EN = 0; DI = 0; #10 CLK = 1; #10 CLK = 0; // DO = 0 end endmodule ``` The synthesis issues of the CRC are discussed in the book. Some of them are:
The behavioral model is synthesizable but it might have timing problems due to the long combinational path of the XOR gate.
The RTL code is synthesizable and it uses a generate statement to create a parameterized number of flip-flops and XOR gates.
The RTL code can be optimized by using a different polynomial function that has fewer XOR gates or by using a different size of the shift register that has better error detection or correction properties.
Conclusion and FAQs
In this article, we have given you a comprehensive guide on Verilog Designer's Library Pdf D, a book by Bob Zeidman that offers a collection of reusable Verilog code for various functions and applications. We have explained what Verilog Designer's Library Pdf D is, why you should use it, how to use it, and some examples of the Verilog routines it contains. We hope that this article has helped you learn more about Verilog Designer's Library Pdf D and how it can benefit your integrated circuit design projects.
Here are some frequently asked questions (FAQs) about Verilog Designer's Library Pdf D:
Q: Where can I buy Verilog Designer's Library Pdf D?A: You can buy Verilog Designer's Library Pdf D from the official website of Bob Zeidman, where you can also find other books and software tools by the author. The website also provides a CD-ROM that includes all of the Verilog code from the book, plus FPGA Express synthesis software from Synopsys and SILOS III simulation software from Simucad.
Q: What are the prerequisites for using Verilog Designer's Library Pdf D?A: To use Verilog Designer's Library Pdf D, you need to have a computer that can run Verilog software tools, such as editors, compilers, simulators, and synthesizers. You also need to have access to Verilog Designer's Library Pdf D or CD-ROM. You also need to have a basic familiarity with Verilog structure and syntax, but you do not need to have a background in programming.
Q: How can I learn more about Verilog Designer's Library Pdf D?A: You can learn more about Verilog Designer's Library Pdf D by reading the book itself, which provides detailed explanations and examples of each function and topic. You can also visit Bob Zeidman's website, where you can find more information and resources about Verilog Designer's Library Pdf D and other products by the author. You can also contact Bob Zeidman directly through his website if you have any questions or feedback about Verilog Designer's Library Pdf D.
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