What should I study in FPJA and what is the employment prospect?

What should I learn when learning FPGA?

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The real power of FPGA lies in its fast parallel data processing ability, which is the same as that of single chip microcomputer.

Machine, ARM and DSP are very different. So she can carry out high-speed data sampling and processing, and only

It can only play its powerful role in the fields of communication and video processing, and it is only used in IC design.

Just a platform for design verification (personal point of view).

Regarding NIOS, I personally feel that it is not very easy to use, and SOPC is rarely used in practical applications.

The practicality is not as good as MCU and ARM, and it is far less convenient to use than ARM and MCU, because

There are many applications and supports about ARM and MCU, but FPGA is only used as NIOS.

Platform, then his price is really too high, at least so far, NIOS can not replace ARM and Monolith.

Machine. NIOS, ARM and MCU are all programmed based on C language. If you plan to spend time learning NIOS.

(That's just learning) I suggest you spend more time learning ARM or MCU, because ARM.

Or is the single-chip microcomputer more practical and more "money way" It is necessary to understand the essential differences between C language and Verilog language.

Anyway, what should I pay attention to when learning FPGA?

This development board makes you feel that you are really learning to design FPGA, instead of putting FPGA

Learning MCU is not only for controlling LED, but also of little practical use. basis

The development board will let you experience how interesting it is to combine FPGA design with matlab, design FIR filter,

CIC filter, DDC/DUC, DDS, etc. And these are exactly what real work should have.

Force, let FPGA really play its powerful function.

Learning FPGA needs the idea of circuit, while editing C language with NIOS doesn't need to consider hardware circuit at all.

(This is the characteristic of C language), so you don't have to deviate from the core idea of digital circuit when learning FPGA: logic.

Series design, not C language design, and understand the internal circuit structure of FPGA.

Logic design: using verilog HDL or VHDL to design the required logic functions.

Software synthesizes codes into logic circuits.

Synchronous design: "In the digital circuit, the clock is the most important and special signal in the whole circuit. System scale

Some devices work at the jumping edge of the clock, which requires the delay difference of the clock signal to be very large.

Small, otherwise it may cause sequential logic state error; The clock signal is usually the most heavily loaded signal, so

The load should be distributed reasonably. For this reason, there are generally numbers in programmable devices such as FPGA.

Unequal global clock network dedicated to system clock drive. The characteristics of this network are as follows: 1. Load energy.

Especially strong, any global clock drive line can drive the flip-flop inside the chip; The second is the delay difference.

Very small; Thirdly, the waveform distortion of the clock signal is small and the working reliability is good.

In synchronous design, the global clock input is usually connected to the clock end of the device, otherwise its performance will be affected.

Influence. If the system needs multiple systems, it is best to input it from the FPGA clock pin by a clock source.

Frequency division or frequency multiplication of PLL with FPGA can get multiple clocks.

Timing constraints: This is to learn the advanced functions of FPGA. When designing high-speed circuits, this function

Used frequently. In order for quartus to synthesize high-speed and stable FPGA circuits, it needs to interface with high speed.

And the timing constraint is carried out on the internal circuit of FPGA.

Basic timing constraint: 1. Kernel frequency limitation.

2. Kernel frequency constraint+timing anomaly constraint

3. Kernel frequency constraint+timing anomaly constraint +I/O constraint

These constraints are usually used by designers of communication systems, and of course there are more detailed constraint methods, which are very large.

Economists can refer to the timing constraints section in CD 1

Develop a good coding style: the development of coding style should have a certain coding foundation, otherwise it will depend on a lot.

You can't read the article about coding style written by others, and you can't execute it correctly. When you have a certain FPGA foundation.

After laying a good foundation, we will examine our own coding style and the coding style suggested by others, and finally form a mature one.

The encoding style of. There are various coding styles, different coding styles are applied in different fields, and some codes.

Style is suitable for communication field, and some coding styles are suitable for ASIC design.

The prospect of learning FPGA;

The prospect of learning FPGA

Since its birth, FPGA has experienced a transformation from a supporting role to a leading role, and it is mainly used to replace complex logic electricity.

Road, now emphasizes the concept of platform, when integrating digital signal processor, embedded processor, high-speed serial.

And other high-end technologies have been applied to more fields. It is precisely because of its rapid development that more people learn.

People in FPGA see hope, and its broad prospects are one of the reasons why we choose it.

(1) has a bright future.

According to the market research firm Gartner Dataquest, FPGA and other programmable logic devices will be in 20 10 years.

(PLD) market will grow from $3.2 billion in 2005 to $6.7 billion, and there will be a growing trend in the future.

The biggest opportunity for the development of FPGA and PLD industry is to replace ASIC and ASSP.

In ASSP, the market size of digital logic is about $35 billion. Because users can quickly evaluate P 1

D programming, according to the requirements to achieve special functions, compared with ASIC and ASSP, PLD is flexible and open.

It has more advantages in development cost and product listing speed, so FPGA will be a very promising one in the future.

Industry.

Because of the particularity of FPGA structure, repeatable programming and short development cycle, it has been paid more and more attention.

Lai, its characteristics are closer to ASIC. The biggest advantage of ASIC over FPGA is its low cost, but FPGA's

Now the price is getting lower and lower. For example, Actel's Nano series has broken the price barrier of FPGA.

Providing more than 50 kinds of FPGA below 1 USD can already compete with ASIC to some extent.

According to the current development trend, FPGA will inevitably replace most ASIC markets in the future, although according to

Moore's Law: You can integrate the same unit area twice every 18 to 24 months.

The number of transistors means that the chip cost will be halved after every 18 to 24 months, but this only refers to the bare crystal (D.

Ie) does not mean that the cost of the whole chip is halved, because the mask (Mas) at the front end of wafer manufacturing.

K) Cost. The packaging (also called assembly and packaging) cost and labor cost at the back end of wafer manufacturing will not change.

Moore's law, but the cost of chips is on the rise, so many small and medium-sized cores in the past

These tablets can't be produced by advanced technology, so either continue to use the old technology or you must use F.

PGA chip production ...

The future trend tells us that FPGA will become one of the most important high-tech industries in 2 1 century, especially in China.

China's FPGA market is a "virgin land that has not been completely reclaimed", and seizing the present opportunity means

Strive to provide us with stronger competitiveness in the future.

(2) More employment opportunities

Although the FPGA market is vast, there is an extreme shortage of FPGA technicians, and many universities still do not attach importance to it.

Relying on the teaching of FPGA technology, students don't even know what FPGA and Verilog are after graduation.

Lost many employment opportunities. Guangzhou Zhou Ligong Single Chip Microcomputer Development Co., Ltd. has gone through 22 years.

In this city, every lecture venue is full of people inside and outside, and every student is eager to find a good job.

The situation can be seen from this, but few students know about FPGA and Verilog through exams, although

We have high hopes for recruiting FPGA talents every year, but we are disappointed every time.

It will be difficult to recruit FPGA development engineers.

It can be seen that the students who are proficient in FPGA among the fresh graduates are scarce resources, not enterprises.

It costs a lot to train FPGA development engineers, so for students majoring in electrical engineering at school,

It is said that this is a great opportunity to create individual differentiated competitiveness. In fact, you can find it as long as you master FPGA.

A job with a higher salary. Our company often pays special attention to these "specialities" every time it evaluates employees.

Special employees ",generally speaking, the salary of these employees will be higher than other positions, 500 yuan, who studied FPG.

A's employment advantage, but many people do not fully realize the importance of mastering FPGA technology.

Affected by the financial crisis, it is a great test for students' employment. According to the statistics of the Ministry of Education, 200

In 2008, there were 5.59 million college graduates nationwide, 640,000 more than in 2007, and they graduated from colleges and universities in 2009.

The number of students reached 6 1 1 10,000, an increase of 520,000 over 2008. So many college students are facing employment problems.

Question, if individuals do not have certain advantages, they will be submerged in the vast sea of people and cannot find their ideals.

Work, and learning FPGA can help students acquire more skills and greatly improve their employment opportunities.

(3) Greater technological development space

As we know, semiconductors have always been a relatively weak industry in China, which is far from foreign countries. Most integrated circuits

They all come from Europe and America, and there are not many IC technologies with independent intellectual property rights in China, so most of them need to be introduced from abroad.

Advanced integrated circuit design technology. But since 2000, integrated circuit design enterprises in Chinese mainland have mushroomed.

Quickly stand out, the number of enterprises has increased by more than four times in five years, reaching more than 500 in 2005, with sales revenue.

There are over 100 million design enterprises 17, of which 2 have sales scale exceeding 100 million yuan. Restored land

Generally speaking, IC design companies in China can be divided into four categories. The first category is state-owned IC design companies, which generally undertake.

The task of the government R&D institute after the transformation; The second category is the design department independent of the system manufacturer.

IC design company; The third category is private IC design companies, mainly returnees; The last category is foreign capital i.

C design company.

This shows that integrated circuit design is also a key direction of future development and will be one of the industries strongly supported by the state.

First of all, IC designers must master the technology of FPGA, which is used before chip flow.

Pre-design verification uses the same design language as FPGA and is only used in back-end design.

To the specific technology of ic design, and IC designers must be people who understand FPGA design, so they are the person in charge.

Mastering FPGA technology is the only way to the IC design hall