Why does the FPGA chip take the storage device

March 18, 2024
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What is FPGA chip?

FPGA chip, full known as the on-site programmable door array chip (Field-ProGramMable Gate Array), is a programmable logic chip.Compared with the ASIC chip with fixed features, FPGA chips are more flexible for developers, and they can customize specific functions by programming internal structure.

The storage of FPGA chip

In the FPGA chip, the storage device is one of the important parts.Compared with the storage in the CPU or other chips, the storage in the FPGA chip is usually intensive. This is to meet the characteristics of high -speed storage in FPGA applications.

Cyclone FPGA

Demand of high -speed storage

Because FPGA applications often need high -speed processing and high -speed transmission, a large number of high -speed storage is embedded in the FPGA chip.These storageers are usually used to store temporary data or status information to complete certain features or tasks.

Why do we need to take a storage memory

The resources of the FPGA chip itself are limited, and in order to meet the needs of high -speed storage, a large number of high -speed storage is needed, which will lead to the area of the FPGA chip will become very large, resulting in rising design difficulties and costs.The take -out storage can make full use of resources outside the FPGA chip to meet the needs of high -speed storage in the FPGA chip.

Types of outer storage storage

There are many types of outer storage in FPGA chips, such as SRAM (static random access memory), SDRAM (synchronous dynamic random access memory), DDR SDRAM (double data rate synchronous dynamic random memory), and so on.The characteristics of these storage vesters are different, and they need to be selected according to the needs of specific FPGA applications.

Interface of the storage memory

Unlike the logical circuit inside the FPGA chip, the outer storage memory usually corresponds to specific interfaces, such as commonly used SPI, I2C, SD, DDR, and so on.Through these interfaces, you can write or read the required data to the outer storage memory to complete the specific function in the FPGA chip.

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The connection between the take -out memory and the FPGA chip

Own storage memory is usually connected to the FPGA chip through the pin of the FPGA chip. Therefore, when designing the FPGA chip design, the connection method and quantity of the outer storage memory must be considered to meet the application needs.

The advantages and disadvantages of the storage memory

Compared with the internal storage of the storage memory, the outer storage memory can not only make full use of external resources, but also avoid the increase in costs caused by the limitation of FPGA chip resources and the increase in design difficulty.However, there are some disadvantages, such as complex designs of external interfaces, which will bring a certain amount of design difficulty and cost increase.At the same time, due to the limitation of the interface length, the transmission speed between the FPGA chip and the outer storage memory is relatively slow.

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Future development of FPGA chip

With the continuous progress of technology, the demand for high -speed storage of FPGA chips will become higher and higher.In the future, with the continuous development of the intersection storage interface protocol, it is believed that the outer storage in the FPGA chip will become an indispensable part of FPGA applications.

in conclusion

The outer storage memory can fully meet the needs of high -speed storage in the FPGA chip, and effectively avoid the problems of limited FPGA chip resources.At the same time, the interface between the FPGA chip and the outer storage device is constantly being improved. We can expect FPGA chips to play a greater role in a wider range of areas.