參數(shù)資料
型號(hào)： 21041
廠商： Intel Corp.
英文描述： Digital Semiconductor 21041 PCI Ethernet LAN Controller(數(shù)字半導(dǎo)體21041 PCI以太網(wǎng)LAN控制器)
中文描述： 數(shù)字半導(dǎo)體21041 PCI以太網(wǎng)局域網(wǎng)控制器（數(shù)字半導(dǎo)體21041的PCI以太網(wǎng)局域網(wǎng)控制器）
文件頁(yè)數(shù)： 12/64頁(yè)
文件大?。?/td> 230K
代理商： 21041
1.3 Features
The 21041 has the following features:
Note
Asterisks (*) indicate 21041 features that are not available on the
21040.
Offers a single-chip Ethernet controller for PCI local bus
Provides a direct interface connection to PCI bus
Implements pinout order as recommended by the
PCI Local Bus
Specification
to allow board layout within trace-length restriction*
Contains onchip integrated attachment unit interface (AUI) port and a
10BASE-T transceiver
Compliant with PCI local bus specification
Support for subvendor ID
Implements the same architecture as 21040 to allow using unified drivers*
Supports full-duplex operation and IEEE 802.3 autonegotiation algorithm
of full-duplex and half-duplex environments*
Provides upgradable boot ROM interface (FLASH or EEPROM) of 64KB,
128KB, or 256KB*
Contains serial ROM interface (suitable also for MicroWire EEPROM) 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 adapters based on
the 21041 chip*
Provides clock speed up to 33 megahertz, with no wait states on PCI
master operation
Enables powerful onchip DMA with programmable burst sizes of up to 32
longwords providing for low CPU utilization
Implements unique, patent-pending intelligent arbitration between DMA
channels preventing underflow or overflow and is optimized for full-duplex
operation
Incorporates a 16-bit, general-purpose timer*
4
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