EVB-USB2514B-FS Development Boards, Kits, Programmers

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Evaluation and Demonstration Boards and Kits

The EVB-USB2514B-FS belongs to a type of evaluation and demonstration boards and kits, which are useful for designers and engineers to demonstrate and evaluate various circuit applications. The EVB-USB2514B-FS board is specifically designed to allow user to interface their application with USB 2.0 devices and embedded USB controllers.

Application Field of EVB-USB2514B-FS

The EVB-USB2514B-FS is intended to demonstrate the interface applications between USB 2.0 devices, and offers designers an overview of different USB 2.0 interface applications. The board is well-suited for applications such as USB-to-CAN-to-RS232-to-ETH interface conversion, providing an easy and cost effective solution for USB data transfer. It is also useful in USB to SPI interface conversion and in Ethernet auto-negotiation.

Working Principle of EVB-USB2514B-FS

The EVB-USB2514B-FS has an integrated USB2.0 bridge controller, the FT245R. It is a high-speed USB to FIFO data transfer controller providing the following features:

• FIFO interface support for bus change.
• The FT245R has data width options for 8bits, 16bits, 32bits FIFO.
• Maximum 32 bytes buffer size, with upstream 8 bytes and downstream 24 bytes buffers size.
• Ability to program FIFO/DMA data transfer from USB to Host
• Compatible with high speed and low speed USB 2.0 requirements

FT245R is connected to a main processor via dedicated drivers, which consists of MCURX and MCTX drivers to control the data flow from and to the USB host controller. The board is characterized to operate with any standard ATMEL microcontroller with enough dedicated address and data bus wide to support x8, x16 and x32 bit data width FIFO interface to microcontroller systems.

The board also offers an embedded programmable Ethernet-based port with the help of an FTDI USB-to-UART bridge converter, allowing easy connection to any personal computer or workstation. The board provides a secondary FIFO interface that enables data capture from any digital signal devices such as thermocouples, pressure sensors, flow meters, etc. with an opto-isolated circuit for safety. The integrated 2-port USB high-speed hub can be used to add more devices and increase the data transfer rate.

The board also supports USB 2.0 high speed 480Mb/s for upstream and downstream data transfer. In addition to these features, the board also has an ATX power connector, a voltage regulator, a 2-channel UART bridge, a 5V/3.3V switch, an I2C digital EEPROM, and an ISP programming connector for easy access to the MCU. Last but not least, the board also comes with a set of LEDs for debugging.

Conclusion

The EVB-USB2514B-FS is an exemplary evaluation and demonstration boards for user to interface their applications with USB 2.0 devices. Its integrated bridge controller FT245R provides maximum 32 bytes buffer size for data transfer, making it a great choice for applications like USB-to-CAN-to-RS232-to-ETH interface conversion. Furthermore, with its ATX power connector, voltage regulator, 2-channel UART bridge, 5V/3.3V switch, I2C digital EEPROM, and ISP programming connector, the EVB-USB2514B-FS board is ideal for use in embedded USB controllers.

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