XR21B1422IL40-0A-EVB

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Evaluation and Demonstration Boards and Kits include many types of boards, and the one this document will focus on will be the XR21B1422IL40-0A-EVB. This evaluation board is used to control an electronic circuit for testing and debugging purposes. The XR21B1422IL40-0A-EVB is specifically designed to interface with the CX4203 clock and data converter, acting as a bridge between the two devices. It enables easier development, network and system-level testing.

The application field for the XR21B1422IL40-0A-EVB is mainly focused on Gigabit Ethernet (GbE) applications, and it can serve as a solution for networking, communications, automotive, industrial, consumer and medical applications. In varying GbE applications it can achieve data transfer rates up to 125Mbits/s, when used in the CX4203 clock and data converter. The XR21B1422IL40-0A-EVB can be used as the building block for establishing communication between the CX4203 chip and a host processor, allowing for the development and validation of design flows.

The working principle of the XR21B1422IL40-0A-EVB is centered around the isolation of the CX4203 clock and data converter from external devices. In order for this to work the board is designed in a way which ensures the interrupt signals of peripheral circuits don’t interfere with the chip’s command signals. Additionally, the board is equipped with an EEPROM, allowing the chip to detect the board and its configuration information. It also has the ability to program the clock and data converter’s registers, supporting both 3.3V and 5V devices.

The board is also designed with I2C support, allowing applications such as system health monitoring, clock selection and adjustment, readback of registers, and output clock signal data for mining. Another feature of the board is the presence of a VSEL signal connection which can be used for board turnoff when performing system management. The board is also shipped with an integrated JTAG cable which allows the configuration of PCM audio streams for GbE applications.

The XR21B1422IL40-0A-EVB evaluation board is a useful tool for developing and debugging GbE applications. With its isolation of the CX4203 clock and data convertor, its EEPROM, its I2C support, its VSEL signal connection, and its integrated JTAG cable, the board offers engineers a comprehensive platform to facilitate quicker product development and validation.

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