Introduction

The Intel® 82541(PI/GI/EI) Gigabit Ethernet is a single, compact component with an integrated Gigabit Ethernet Media Access Control (MAC) and physical layer (PHY) functions. For desktop, workstation and mobile PC Network designs with critical space constraints, the Intel® 82541(PI/GI/EI) allows for a Gigabit Ethernet implementation in a very small area that is footprint compatible with current generation 10/100 Mbps Fast Ethernet designs.

Product Features

■ PCI Bus

— PCI revision 2.3, 32-bit, 33/66 MHz

— Algorithms that optimally use advanced PCI MWI, MRM, and MRL commands

— CLK_RUN# signal

— 3.3 V (5 V tolerant PCI signaling)

■ MAC Specific

— Low-latency transmit and receive queues

— IEEE 802.3x-compliant flow-control support with software-controllable thresholds

— Caches up to 64 packet descriptors in a single burst

— Programmable host memory receive buffers (256 B to 16 KB) and cache line size (16 B to 256 B)

— Wide, optimized internal data path architecture

— 64 KB configurable Transmit and Receive FIFO buffers

■ PHY Specific

— Integrated for 10/100/1000 Mb/s full- and half-duplex operation

— IEEE 802.3ab Auto-Negotiation and PHY compliance and compatibility

— State-of-the-art DSP architecture implements digital adaptive equalization, echo and cross talk cancellation

— Automatic polarity detection

— Automatic detection of cable lengths and MDI vs. MDI-X cable at all speeds

■ Host Off-Loading

— Transmit and receive IP, TCP, and UDP checksum off-loading capabilities

— Transmit TCP segmentation and advanced packed filtering

— IEEE 802.1Q VLAN tag insertion and stripping and packet filtering for up to 4096 VLAN tags

— Jumbo frame support up to 16 KB

— Intelligent Interrupt generation (multiple packets per interrupt)

■ Manageability

— On-chip SMBus 2.0 port

— ASF 1.0 and 2.0

— Compliance with PCI Power Management v1.1/ACPI v2.0

— Wake on LAN* (WoL) support

— Smart Power Down mode when no signal is detected on the wire

— Power Save mode switches link speed from 1000 Mb/s down to 10 or 100 Mb/s when on battery power

■ Additional Device

— Four programmable LED outputs

— On-chip power regulator control circuitry

— BIOS LAN Disable pin

— JTAG (IEEE 1149.1) Test Access Port built in silicon (3.3 V, 5 V tolerant PCI signaling)