21041-PB Overview
The Digital Semiconductor 21041 PCI Ethernet LAN Controller is a single-chip master, direct memory access (DMA) Ethernet LAN controller with a direct interface to the PCI local bus. It supports full-duplex operation, and its unique design is optimized to reduce the host bus utilization. The 21041 is highly integrated to support 10BASE5, 10BASE-T, or 10BASE2 network connections.
21041-PB Key Features
- Offers a single-chip Ethernet controller for PCI local bus
- Provides glueless connection to PCI bus
- Contains an onchip integrated attachment unit interface (AUI) port and a 10BASE-T transceiver
- Implements the same architecture as the 21040 to allow use of unified drivers
- Supports full-duplex operation and IEEE 802.3 autonegotiation algorithm of full-duplex and half-duplex network environme
- Provides upgradable boot ROM (flash or EEPROM) interface of 64KB, 128KB, or 256KB
- Contains MicroWire EEPROM interface for Ethernet ID address and, optionally, other system parameters
- Implements automatic loading of subsystem vendor ID and subsystem ID from serial ROM to distinguish between different ad
- Incorporates a 16-bit, general-purpose timer
- Contains two large (256-byte) independent receive and transmit FIFOs