FPGA configuration chip configuration successful configuration

March 23, 2024
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FPGA configuration chip configuration successful configuration

What is FPGA chip

FPGA (Field Programmable Gate Array), Chinese is called a programmable door array or on -site programming logic array. It is a common programmable logic device.The FPGA chip is designed as a chip that can be re -programmed and configured in the future, and usually contains programmable I/O pins and a large number of logical units.We can use hardware description language (HDL) to write code to control the behavior of the FPGA chip.

Why do I need FPGA chip

Cyclone FPGA

FPGA chips have a wide range of applications in various applications due to their programming and reconstruction.They are often used in digital signal processing, network routes, communication systems, industrial control and other systems.Compared with ASIC (Application of specific integrated circuits), the design and production cost of FPGA chips is low, and they can quickly develop and apply it to a wide range of fields.

How to complete the configuration of the FPGA chip

The functions and performance of the FPGA chip depend on their configuration, and FPGA must be configured correctly before use.Generally, the configuration is implemented by loading the design to the SRAM (static random memory) inside FPGA.FPGA chips can be configured in various ways, such as programming SRAM, configuration through the SPI interface, configuration of the USB/JTAG interface, etc.This article will focus on SRAM -based programming methods.

SRAM’s working principle

The main difference between SRAM and DRAM is that the SRAM memory unit uses multiple memory circuits and does not need to refresh the circuit.Each memory unit consists of a memory unit and a dual -stable memory. The latter can switch between two steady -state, which represents two different binary states.When SRAM receives a control signal, it will read and write data in the SRAM memory unit.

SRAM of FPGA chip

The SRAM of the FPGA chip can be understood as a storage area for storage design implementation, and as the configuration of FPGA.FPGA’s SRAM consists of its configuration memory and user logic memory, which are used to store the configuration files and user logic of FPGA, respectively.


Compile the design to the loading file

Before the FPGA chip configuration programming, the code must be written to convert it to the configuration file.In this process, you need to write a hardware description language (HDL) code and a hardware description language (HDL) compiler.HDL code usually writes simulation purposes to determine their behavior.The HDL compiler can compile HDL code into binary files that meet the requirements of the FPGA chip, that is, loading files.

Write the loaded file into the FPGA chip

The FPGA chip can be configured in various methods, such as serial peripheral interface (SPI) or parallel interface.Since the configuration method we use in this article is based on SRAM, we only need to write the loading file into the SRAM of the FPGA by changing the switch settings.The loading file should correspond to the physical layout and pin allocation of the FPGA chip.

Configure FPGA chip

Configure the FPGA chip is implemented after loading the file.We can use the logical unit of the configuration information in the configuration memory (such as LUT or register) of the FPGA chip.The logic unit of the FPGA chip can be connected in various ways to achieve specific functions.


Verify the configuration of the FPGA chip

After successfully configure the FPGA chip, we need to verify whether its configuration is correct.For this reason, test program (Test Bench) can be written as the same physical layout and pins of the actual physical layout and pins of the FPGA chip.The test program can simulate the behavior of the FPGA chip and check its output.If there is no error in the test structure, the FPGA chip can be used.

in conclusion

In this article, we introduce the basic concepts, working principles, and how to configure the FPGA chip in detail.For those engaged in digital circuit design and hardware programming, it is important to understand and master the configuration process of FPGA chips.The programmatic and reciprocity of the FPGA chip allows them to have advantages in terms of reliability, cost and performance, and has a wide range of application prospects in the fields of communication, control.