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
