The AM79C972, also known as the PCnet-Mobile, is a single-chip, high-performance Ethernet controller manufactured by Advanced Micro Devices (AMD). It is designed for mobile applications, providing a cost-effective and energy-efficient solution for connecting portable devices to Ethernet networks. This controller supports various network standards and offers advanced features for optimized performance and power management.

Applications

• Laptop computers
• Notebook computers
• Docking stations
• Network interface cards (NICs) for mobile devices
• Embedded systems requiring Ethernet connectivity

Features

• IEEE 802.3 Compliant: Adheres to the Ethernet standard for network communication.
• Integrated Media Access Controller (MAC): Handles the low-level details of Ethernet communication.
• Supports 10BASE-T: Operates at 10 Mbps over twisted-pair cabling.
• Low Power Consumption: Designed for energy efficiency in mobile applications.
• Plug and Play Compatible: Simplifies installation and configuration.
• Full-Duplex Operation: Enables simultaneous transmission and reception of data.
• Bus Master DMA: Reduces CPU overhead by allowing the controller to directly access system memory.

Benefits

• Seamless Ethernet connectivity for mobile devices.
• Reduced power consumption extends battery life in portable applications.
• Simplified installation and configuration with Plug and Play support.
• Improved network performance with full-duplex operation.
• Reduced CPU load with Bus Master DMA, freeing up processing power for other tasks.

Additional Details

The AM79C972 operates using a standard ISA interface. It incorporates advanced power management features, including power-down modes to further conserve energy. The device is designed to be highly integrated, reducing the number of external components required and simplifying system design. The operating temperature range is standard commercial (0°C to +70°C). It supports various network protocols, ensuring compatibility with a wide range of network environments.