KSZ8721B-EVAL

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Evaluation and Demonstration Boards and Kits are perfect for the development and testing of products, allowing engineers to quickly implement their designs as easily as possible. The KSZ8721B-EVAL is one such board, and is capable of providing evaluation, and demonstration of several types of system designs from automotive to industrial, and more. The board is equipped with a comprehensive set of peripheral devices, a programmable chip, and memory chips for the tests and evaluations.

The KSZ8721B-EVAL is an evaluation board equipped with external memory and multiple external chips, and built according to the Microchip KSZ8721B Family Reference Design. The KSZ8721B family of devices are low-power, high-performance open-drain Ethernet physical-layer (PHY) transceivers. The board offers multiple power-saving transceiver modes, and integrated core logic for development.

The KSZ8721B-EVAL board has several features commonly found in evaluation and demonstration boards and kits. These include: an adjustable DC power supply (from 6V to 24V) and adjustable current limiter; integrated, independent power regulation of ±2.5V, ±3.3V, and +12V (max. 50mA) to supply the voltage to the chips; multiple IO connections with external memory including Programmable Device and Memory ICs; 4-bit and 8-bit digital input/output from 8 to 37 pins; and two RX/TX Test Jig Connectors.

Aside from a DC power supply, the board also incorporates eight LEDs to indicate the board status. These LEDs indicate the power supply voltage, power supply overload, board reset, EEPROM operation, programmable power supply, Ethernet PHY reset, and system oscillator for Ethernet. The board also includes two independent LEDs with associated switches, which are used to debug hardware and/or software problems.

The primary function of the KSZ8721B-EVAL is to allow straightforward evaluation and demonstration of the functionality of the Microchip KSZ8721B family of transceivers. The evaluation board contains all the components needed to quickly develop a prototype design to verify designs with the KSZ8721B family of transceiver ICs. To use the board, all that is required is to connect it to an appropriate voltage source, connect the IO connections, and supply a test jig.

The working principle of the KSZ8721B-EVAL is quite simple. Power is supplied to the board from an external DC power supply or an adjustable current limiter. The adjustable DC power supply allows the board to be powered with a 6V to 24V voltage, while the adjustable current limiter ensures that the current supplied to the board does not exceed the specified limits. The adjustable current limiter also has an overload protection feature to protect the circuitry. The board also includes numerous safety and durability protections to ensure that the board performs optimally.

The board has several logic circuits that provide various control operations. It employs a Programmable Device and Memory IC to store the user program configuration, and a microcontroller to run the program. The board also contains several other integrated circuits such as analog, digital, and communication ICs for the added functionality and debugging purposes. Once the electric power is supplied, the board is then ready to be used for evaluation and demonstration.

In conclusion, the KSZ8721B-EVAL board is a powerful option for evaluation and demonstration of the Microchip KSZ8721B family of physical-layer transceivers. It comes with a comprehensive set of features, and with a simple set-up, engineers can quickly and easily implement their designs as well as test them. The adjustable DC power supply, adjustable current limiter, and safety features ensure the board is as reliable and safe as possible, and the numerous logic circuits enable the board to quickly and error-freely process the user program configurations.

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