KSZ8721B Description

The Microchip Technology KSZ8721B is a single-port 10/100 Ethernet physical layer transceiver (PHY) that is designed to provide a low-cost Ethernet connectivity solution for a wide range of embedded systems. This PHY supports both MII (Media Independent Interface) and RMII (Reduced Media Independent Interface) interfaces, making it compatible with a variety of microcontrollers and networking devices. It also features auto-negotiation, auto-MDI/MDIX, and loopback modes, as well as energy-efficient Ethernet (EEE) support for reduced power consumption.

KSZ8721B Features

• Low cost

• ESD protection

• Loopback modes

• Single-port 10/100 Ethernet PHY

• Low power consumption (1.3W max)

• Small footprint package (48-pin LQFP)

• Supports both MII and RMII interfaces

• Auto-negotiation and auto-MDI/MDIX

• Energy-efficient Ethernet (EEE) support

• Wide operating temperature range (-40°C to +85°C)

• Advanced diagnostics features, including cable length measurement and fault detection

KSZ8721B Applications

• Home automation

• Industrial automation

• Consumer electronics

• Automotive networking

• Network switches and routers