A breathing LED produces a gradual brightening and dimming effect by continuously varying its brightness. In digital hardware, this is accomplished through Pulse Width Modulation (PWM) where the duty cycle is swept from minimum to maximum and back. An FPGA implementation typically splits the design...
Gray code is commonly used in FIFO pointers due to its property that successive values differ by only one bit. This minimizes switching activity and enhances noise immunity compared to standard binary counters. The conversion from binary to Gray code follows a simple rule: the most signifciant bit (...
I2C Bus Fundamentals The Inter-Integrated Circuit bus (I2C) is a bidirectional two-wire synchronous serial bus that enables communication between integrated circuits. Originally developed by Philips, this serial expansion technology has become ubiquitous in consumer electronics including displays, v...
Arithmetic ComponentsThe design utilizes separate modules for addition, subtraction, multiplication, and division operations.module math_add ( input wire [7:0] x, input wire [7:0] y, output wire [7:0] z ); assign z = x + y; endmodule module math_sub ( input wire [7:0] x, input wire [7:0] y, output w...
Implementation Environment Software: Quartus II 13.0 Hardware: MP801 Fundamentals of DDS DDS (Direct Digital Synthesizer) is a digital synthesis technique offering wide relative bandwidth, fast frequency switching, high resolution, and continuous phase. It enables easy digital modulation of frequenc...
A friend asked for help with an old Cyclone I board that lacks reset buttons, switches, or any other reset mechanisms. The board has only four common cathode seven-segment displays and 16 LED lights. The task was to write a Verilog code to test the board. The requirements are as follows: (1) The inp...
74HC595 Overview The 74HC595 is an 8-bit serial-in, parallel-out shift register featuring storage capabilities and tri-state outputs. This integrated circuit efficiently converts serial data into parallel output, making it ideal for applications requiring expanded output capacity while conserving FP...
Introduction to Verilog HDL Basic Concepts Fundamental Modules // Constant output module module constant_output ( output logic one ); assign one = 1'b1; endmodule // Zero output module module zero_output ( output logic zero ); assign zero = 1'b0; endmodule Wire Connections // Signal passthrough modu...
A Synchronous FIFO (First-In, First-Out) is a digital storage structure where data is written and read using a single clock source. This component is essential for buffering data streams between logic blocks that operate within the same clock domain but may process data at different rates. Core Desi...
Overview This example implements a minimal AHB‑Lite–style interconnect that supports single, non‑burst transfers with no wait states. The system contains one master and four simple memory‑mapped slaves. Because there is only one master, no arbiter is required. An address decoder generates one‑hot se...