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Includes bibliographical references and index

Yosys is a free and open source Verilog synthesis tool and more. It gained prominence last year because of its role as synthesis tool in the Project IceStorm FOSS Verilog-to-bitstream flow for iCE40 FPGAs. This presentation however dives into the Yosys-SMTBMC formal verification flow that can be used for verifying formal properties using bounded model checks and/or temporal induction. Source: https://media.ccc.de/v/33c3-7922-formal_verification_of_verilog_hdl_with_yosys-smtbmc Uploader: tubeup.py Upload date: 2016-12-27

Yosys is a free and open source Verilog synthesis tool and more. It gained prominence last year because of its role as synthesis tool in the Project IceStorm FOSS Verilog-to-bitstream flow for iCE40 FPGAs. This presentation however dives into the Yosys-SMTBMC formal verification flow that can be used for verifying formal properties using bounded model checks and/or temporal induction. Source: https://media.ccc.de/v/33c3-7922-formal_verification_of_verilog_hdl_with_yosys-smtbmc Uploader: tubeup.py Upload date: 2016-12-27

In many digital circuits ALU is a basic building block. It can be used in integer arithmetic computations and as Complex operation. This research paper is based on the simulation of 16 bit ALU using VHDL. The design was implemented using VHDL Xilinx Synthesis tool ISE and targeted for Spartan device. An ALU performs following operations - Addition, subtraction, multiplication, Not, logical shift right, logical shift left, rotate right, rotate left, OR, AND, XOR, NAND, NOR, XNOR and comparison between two signals. Mayank Mittal"Simulation of 16 bit ALU using Verilog-hdl" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: http://www.ijtsrd.com/papers/ijtsrd5876.pdf Article URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/5876/simulation-of-16-bit-alu-using-verilog-hdl/mayank-mittal

book

book

Includes bibliographical references (p. 381) and index

Includes bibliographical references (p. 209) and index

Yosys is a free and open source Verilog synthesis tool and more. It gained prominence last year because of its role as synthesis tool in the Project IceStorm FOSS Verilog-to-bitstream flow for iCE40 FPGAs. This presentation however dives into the Yosys-SMTBMC formal verification flow that can be used for verifying formal properties using bounded model checks and/or temporal induction.

Yosys is a free and open source Verilog synthesis tool and more. It gained prominence last year because of its role as synthesis tool in the Project IceStorm FOSS Verilog-to-bitstream flow for iCE40 FPGAs. This presentation however dives into the Yosys-SMTBMC formal verification flow that can be used for verifying formal properties using bounded model checks and/or temporal induction.

textbook

textbook

The focus of this paper is on implementation of Inter Integrated Circuit (I2C) protocol following slave module for no data loss. In this paper, the principle and the operation of I2C bus protocol will be introduced. It follows the I2C specification to provide device addressing, read/write operation and an acknowledgement. The programmable nature of device provide users with the flexibility of configuring the I2C slave device to any legal slave address to avoid the slave address collision on an I2C bus with multiple slave devices. This paper demonstrates how I2C Master controller transmits and receives data to and from the Slave with proper synchronization. 

The focus of this paper is on implementation of Inter Integrated Circuit (I2C) protocol following slave module for no data loss. In this paper, the principle and the operation of I2C bus protocol will be introduced. It follows the I2C specification to provide device addressing, read/write operation and an acknowledgement. The programmable nature of device provide users with the flexibility of configuring the I2C slave device to any legal slave address to avoid the slave address collision on an I2C bus with multiple slave devices. This paper demonstrates how I2C Master controller transmits and receives data to and from the Slave with proper synchronization. 

In many digital circuits ALU is a basic building block. It can be used in integer arithmetic computations and as Complex operation. This research paper is based on the simulation of 16 bit ALU using VHDL. The design was implemented using VHDL Xilinx Synthesis tool ISE and targeted for Spartan device. An ALU performs following operations '“ Addition, subtraction, multiplication, Not, logical shift right, logical shift left, rotate right, rotate left, OR, AND, XOR, NAND, NOR, XNOR and comparison between two signals. Mayank Mittal"Simulation of 16 bit ALU using Verilog-hdl" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: http://www.ijtsrd.com/papers/ijtsrd5876.pdf  http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/5876/simulation-of-16-bit-alu-using-verilog-hdl/mayank-mittal

Verilog HDL quick reference card

기초부터 응용까지 Verilog-HDL 차영배(車永培) 편저 다다미디어, 2004 현재 우리 일상생활에서 사용하고 있는 가전 제품이나, 컴퓨터, 제어 장치들의 기능은 강력해지고, 크기는 옛날에 비해서 무척 작아지고 있다. 이런 현상은 예전에는 TTL로 구성하던 로직회로를 지금은 TTL들을 집대성한 ASIC을 사용하기 때문에 기능을 향상시키고, 크기를 줄일 수 있었으며, 한 칩에 집적(integrated) 가능한 논리 회로의 규모는 아주 빨리 발전하고 있다. 논리 회로의 설계 방법도 크게 변하여, 처음에는 “회로도”를 이용하여 설계하던 방법에서 현재는 “하드웨어 기술 언어:HDL (Hardware Description Language)”를 이용하여 설계하고 있다. 많은 HDL중에서, Verilog HDL은 간단하게 하드웨어를 기술할 수 있고, ASIC 설계로도 이용할 수 있다. Verilog HDL은 1995년에 IEEE1364로 표준화된 언어이다. 그래서 이 책에서는 Verilog HDL을 이용하여, 여러 기능들의 논리회로의 설계 과정을 알기 쉽게 설명하였으며, 사용자가 만든 하드웨어 기능들을 실험하기 전에, 사용자 자신이 의도한 대로 동작하는지 시뮬레이터를 이용하여 확인하고, FPGA 혹은 CPLD로 써넣어 실험을 하도록 하였다. 특히 포함되어 있는 CD에는 예제를 각 벤더(자이링스, 레티스, 알테라)별로 구성하여 각 벤더가 제공하는 디자인 툴의 사용법과 함께 수록하여 참고 할 수 있게하였다. ---------------------------------------- 이 CD는 "기초부터 응용까지 Verilog"의 프로그램과 예제소스가 들어 있습니다. 1. CD을 CD-ROM에 넣으면 Setup프로그램이 자동 수행 됩니다.     * 자동실행(autorun)이 되지 않으면 cd의 setup.exe을 실행 시키면 됩니다.     * WinIDE ASIC-Tool.exe와 디바이스 드라이버가 인스톨 됩니다.          * 인스톨 후 반드시 PC을 리부팅 시켜야 정상적으로 프로그램이 수행 될 수 있습니다.     * 실행 파일(ASIC-Tool.exe)은 c:\Verilog 폴더에 있습니다. 2. 예제 소스     * 예제는 c:\Verilog폴더에 들어 있습니다.     * 1번의 인스톨이 끝나면 다음과 같이 폴더가 생성되며         C:\Verilog\             Xc2s150\             ep1k100\             isp1032e\      각 FPGA/CPLD디바이스별로 만들어진 폴더에 있는 실행 파일을 수행 시키면 예제소스가 각 폴더에 인스톨 됩니다.          * CD안에 Veilog폴더 있는것은 참조용으로 사용 하십시요.  이 폴더의 것을 Copy하여 사용 하시면 컴파일시 에러가 발생 합니다.

Pseudo Noise (PN) sequence generator is one of the important element in the designing of Code Division Multiple Access (CDMA) system. To spread spectrum CDMA applications each user is assigned with a PN sequence for the purpose of spreading and dispreading. Various PN sequences can be generated using Linear Feedback Shift Register (LFSR). For an n-bit LFSR not all the characteristic polynomials but only a few will be able to provide PN sequences. In practice a proper and predefined characteristic polynomial of PN generators is used in CDMA systems. However, LFSR circuits are implemented with VLSI technology and a PN sequence generator design may vary in respect to power dissipation, area and propagation delay. Thus, in CDMA systems a careful selection of PN generators is essential. This paper presents a search procedure to obtain a list of characteristic polynomials so that n-bit LFSRs can be implemented with minimum hardware area. In this paper we also discuss the implementation of such PN generators using Verilog HDL.

In many digital circuits ALU is a basic building block. It can be used in integer arithmetic computations and as Complex operation. This research paper is based on the simulation of 16 bit ALU using VHDL. The design was implemented using VHDL Xilinx Synthesis tool ISE and targeted for Spartan device. An ALU performs following operations - Addition, subtraction, multiplication, Not, logical shift right, logical shift left, rotate right, rotate left, OR, AND, XOR, NAND, NOR, XNOR and comparison between two signals. Mayank Mittal"Simulation of 16 bit ALU using Verilog-hdl" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: http://www.ijtsrd.com/papers/ijtsrd5876.pdf Article URL: http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/5876/simulation-of-16-bit-alu-using-verilog-hdl/mayank-mittal

In recent world video and image compression, enhancement, restoration have become very essential. There are many applications where we need to use different transform techniques to convert the signal or data in frequency or time domain. However, with the wide spread of image usage in many fields of our lives, it becomes very important to develop new techniques. The previous research was based on Discrete wavelet transform. In this paper, we introduce Dual tree Complex Wavelet Transform and Double Density Complex Wavelet Transform for applications such as image restoration and enhancement. This introduces limited redundancy (4:1 for 2-dimensional signals) and allows the transform to provide approximate shift invariance and directionally selective filters (properties lacking in the traditional wavelet transform) while preserving the usual properties of perfect reconstruction and computational efficiency. We show how the dual-tree complex wavelet transform and Double Density complex wavelet transform can provide a good basis for multiresolution image denoising and de-blurring. Richa Srivastava | Dr. Ravi Mishra"Comparison between FPGA Implementation of Discrete Wavelet Transform, Dual Tree Complex Wavelet Transform and Double Density Dual Tree Complex Wavelet Transform in Verilog HDL" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: http://www.ijtsrd.com/papers/ijtsrd14108.pdf http://www.ijtsrd.com/engineering/other/14108/comparison-between-fpga-implementation-of-discrete-wavelet-transform-dual-tree-complex-wavelet-transform-and-double-density-dual-tree-complex-wavelet-transform-in-verilog-hdl/richa-srivastava

In recent world video and image compression, enhancement, restoration have become very essential. There are many applications where we need to use different transform techniques to convert the signal or data in frequency or time domain. However, with the wide spread of image usage in many fields of our lives, it becomes very important to develop new techniques. The previous research was based on Discrete wavelet transform. In this paper, we introduce Dual tree Complex Wavelet Transform and Double Density Complex Wavelet Transform for applications such as image restoration and enhancement. This introduces limited redundancy (4:1 for 2-dimensional signals) and allows the transform to provide approximate shift invariance and directionally selective filters (properties lacking in the traditional wavelet transform) while preserving the usual properties of perfect reconstruction and computational efficiency. We show how the dual-tree complex wavelet transform and Double Density complex wavelet transform can provide a good basis for multiresolution image denoising and de-blurring. Richa Srivastava | Dr. Ravi Mishra"Comparison between FPGA Implementation of Discrete Wavelet Transform, Dual Tree Complex Wavelet Transform and Double Density Dual Tree Complex Wavelet Transform in Verilog HDL" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: http://www.ijtsrd.com/papers/ijtsrd14108.pdf http://www.ijtsrd.com/engineering/other/14108/comparison-between-fpga-implementation-of-discrete-wavelet-transform-dual-tree-complex-wavelet-transform-and-double-density-dual-tree-complex-wavelet-transform-in-verilog-hdl/richa-srivastava

入門 Verilog-HDL 記術, CD-ROM Archive (日本 Designwave) EDA Tools and Source Files in Beginning Verilog-HDL 2004.04.08.

HDL

This paper shows a modification to FSM based 32-bit pipelined multiplier. It uses carry look ahead adders (CLA’s) and Carry Select Adders (CSA) in place of ripple carry adders (RCA’s) in 32-bit FSM based pipelined multiplier for reducing the carry propagation delay. The proposed hardware design is based on shift and add algorithm for multiplication process. Our suggested pipelined multiplier design has reduced adder and added the partial product sequentially to increase maximum operating frequency and reduce hardware resources. Synthesis report shows that modified FSM based 32-bit pipelined multiplier has less delay, less usage of logical resources, than FSM based pipelined multiplier. Simulation was done in Xilinx Vivado 2017.4 (Verilog HDL). The proposed design instantiates Carry Select Adder for the partial product addition process, Carry Select Adder is faster than Ripple Carry Adder. The Tradeoff between Delay and Power, Delay has been reduced and power increased when compared to the existing method. The proposed method can be used for the high-speed Pipelined Multiplication operation.

This paper shows a modification to FSM based 32-bit pipelined multiplier. It uses carry look ahead adders (CLA’s) and Carry Select Adders (CSA) in place of ripple carry adders (RCA’s) in 32-bit FSM based pipelined multiplier for reducing the carry propagation delay. The proposed hardware design is based on shift and add algorithm for multiplication process. Our suggested pipelined multiplier design has reduced adder and added the partial product sequentially to increase maximum operating frequency and reduce hardware resources. Synthesis report shows that modified FSM based 32-bit pipelined multiplier has less delay, less usage of logical resources, than FSM based pipelined multiplier. Simulation was done in Xilinx Vivado 2017.4 (Verilog HDL). The proposed design instantiates Carry Select Adder for the partial product addition process, Carry Select Adder is faster than Ripple Carry Adder. The Tradeoff between Delay and Power, Delay has been reduced and power increased when compared to the existing method. The proposed method can be used for the high-speed Pipelined Multiplication operation.

In many communication systems, turbo coding Techniques for Encoding and Decoding are employed to repair errors. As compared to other error correction codes, turbo codes provide great error correcting capabilities. For the implementation of the Turbo decoder, a Very Large Scale Integration (VLSI) architecture is suggested in this study. The Maximum-aPosteriori (MAP) algorithm is employed at the decoder side, where soft-in-soft-out decoders, interleaves, and deinterleavers are all used. The usage of the MAP algorithm reduces the quantity of iterations necessary to decode the information bits being transferred. This research employs a system for the encoder component that consists of two recursive convolutional encoders and a pseudorandom interleaver on the encoder side. Tools from Octave and Xilinx Vivado are used for the Turbo encoding and decoding. The system is synthesised and implemented using a specialised integrated circuit.