1, FTDI Product Overview
FTDI has a wide range of product lines, including USB to UART/FIFO interface chips, USB to SPI/I2C interface chips, USB to parallel interface chips, and so on. The main function of these products is to convert USB signals into other types of serial or parallel signals for communication with various peripherals. Therefore, in a broad sense, FTDI products do not directly use traditional "ports", but instead bridge USB interfaces with other types of interfaces through their internal conversion mechanisms.
2, The type of "port" used by FTDI
Although FTDI's products do not directly correspond to traditional physical ports, we can understand their "port" types from the following aspects:
USB interface:
All FTDI products are designed based on USB interfaces, whether it is USB to UART, USB to SPI, or other types of converters, they are connected to computers or other USB host devices through USB interfaces.
As the input/output interface of FTDI products, USB interface has the characteristics of high speed, stability, and ease of use, which can meet the data transmission needs in various complex scenarios.
Virtual COM Port (VCP):
When FTDI's USB to UART chips are connected to a computer, they typically create a virtual serial port (VCP) in the operating system through a driver program. This virtual serial port is represented as a standard serial port (such as COM1, COM2, etc.) in the operating system, and users can communicate with peripherals connected to the FTDI chip through a standard serial communication protocol (such as RS-232).
The existence of virtual serial ports eliminates the need for users to worry about the complexity of USB communication, as they only need to program and operate according to traditional serial communication methods.
Direct Memory Access (DMA) interface (some products):
In some high-end or specific application FTDI products, DMA interfaces may be supported. The DMA interface allows external devices to directly transfer data to memory without the need for CPU intervention, greatly improving the efficiency and speed of data transfer.
However, it should be noted that not all FTDI products support DMA interfaces, and this feature mainly appears in some high-performance, high-throughput products.
3, Application scenarios for FTDI port types
FTDI's products are widely used in various situations that require USB interface conversion, including but not limited to the following aspects:
Embedded system development:
In embedded system development, it is often necessary to communicate microcontrollers (MCUs) or other embedded processors with computers. FTDI's USB to UART/SPI/I2C interface chips provide a convenient USB connection solution for these devices.
Industrial automation:
In the field of industrial automation, many devices still use serial communication interfaces (such as RS-232, RS-485, etc.). Through FTDI converters, these devices can easily communicate and integrate with modern USB based computers.
Consumer electronics:
In the field of consumer electronics, such as the development of smartphones, tablets, and other devices, FTDI products are also widely used for the expansion and conversion of USB interfaces.
Advanced Driving Assistance System (ADAS):
The rise of Advanced Driver Assistance Systems (ADAS) in the automotive industry has led to the widespread application of FTDI products in the field of in vehicle communication. The USB interface chip of FTDI can support various communication protocols (such as UART, SPI, I2C, etc.), providing a stable communication interface for sensors, controllers, and other devices in ADAS systems.
