Table of Contents
What is synchronous and asynchronous FIFO?
FIFO can be either synchronous or asynchronous. The basic difference between them is that the entire operation of synchronous FIFO is entirely dependent on the clock where as the write operation and read operation of asynchronous FIFO are asynchronous to each other.
How does a 2 clock FIFO work?
This dual clock FIFO is designed as a way for two circuits operating in different clock frequencies to communicate with each other. There is a read side and write side where data is stored into the internal memory of the FIFO using the write side clock and then read from the internal memory using the read side clock.
What is FIFO operation?
A FIFO is a special type of buffer. The name FIFO stands for first in first out and means that the data written into the buffer first comes out of it first. There are other kinds of buffers like the LIFO (last in first out), often called a stack memory, and the shared memory.
What is an asynchronous FIFO?
An asynchronous FIFO refers to a FIFO design where data values are written to a FIFO buffer from one clock domain and the data values are read from the same FIFO buffer from another clock domain, where the two clock domains are asynchronous to each other.
What is a split FIFO?
A split FIFO phase synchronizer provides reliable data transfer at fast clock speeds and high bandwidth. A digital delay locked loop, DLL, centers the data clock midway in the data bit cell.
What is FIFO depth?
The depth (size) of the FIFO should be in such a way that, the FIFO can store all the data which is not read by the slower module. FIFO will only work if the data comes in bursts; you can’t have continuous data in and out. If there is a continuous flow of data, then the size of the FIFO required should be infinite.
What is gray FIFO?
First In First Out [Fifo] The FIFO style provides asynchronous comparison between Gray code pointers to generate an asynchronous control signal to set and reset the full and empty flip-flops.
What is synchronous and asynchronous approach?
Synchronous means happening at the same time. Asynchronous is the opposite—not happening at the same time. Synchronous learning involves students interacting with a teacher in real time, while asynchronous learning involves students working outside of a classroom setting and at their own pace.
What is FIFO Verilog?
This paper deals with the design of Synchronous FIFO using Verilog. A FIFO (First-In-First-Out) is a memory queue, which controls the data flow between two modules. It has control logic embedded with it, which efficiently manages read and write operations.
What is FIFO width?
The width of the input data of the FIFO is 8 bits; however, the width of the output data is 16 bits. You use only one common clock for both read and write actions.
How is FIFO calculated?
To calculate FIFO (First-In, First Out) determine the cost of your oldest inventory and multiply that cost by the amount of inventory sold, whereas to calculate LIFO (Last-in, First-Out) determine the cost of your most recent inventory and multiply it by the amount of inventory sold.
What is the FIFO formula?
What is FIFO structure?
In computing and in systems theory, FIFO is an acronym for first in, first out (the first in is the first out), a method for organizing the manipulation of a data structure (often, specifically a data buffer) where the oldest (first) entry, or “head” of the queue, is processed first.
What are FIFO buffers?
A FIFO buffer is a useful way of storing data that arrives at a microcontroller peripheral asynchronously but cannot be read immediately. One example is storing bytes incoming on a UART. Buffering the bytes eases the real-time requirements for the embedded firmware.
What is Synopsys IP?
Accelerate Your Silicon Success with High-Quality IP Synopsys is a leading provider of high-quality, silicon-proven IP solutions for SoC designs. The broad DesignWare IP portfolio includes logic libraries, embedded memories, analog IP, wired and wireless interface IP, security IP, embedded processors and subsystems.
What is the DesignWare IP portfolio?
The broad DesignWare IP portfolio includes logic libraries, embedded memories, analog IP, wired and wireless interface IP, security IP, embedded processors and subsystems .
Are your design choices for FIFO sizes overwhelming?
Since the cores are designed to accommodate all the system and product tradeoffs, the design choices for FIFOs may become overwhelming. This article explains the basic thought process and different strategies needed to determine the right FIFO sizes for the various DesignWare Cores.
What is the FIFO sizing for Ethernet core FIFOs?
DesignWare Ethernet Core FIFO sizing is fairly conventional as there are separate FIFOs for the TX and RX paths. The user would need to consider if they are using a Store and Forward data flow or if there application can handle the extra work of a Cut-Through data flow.