Intel®82541GI Gigabit
Ethernet Controller
Intel in
Communications
High-performance,
power-optimized Gigabit
connection for mobile and
desktop PCI-based designs
The Intelligent Way to Connect
Longer battery life through reduced power
usage and enhanced power management
System health monitoring and authenticated
remote power control with ASF 2.0
Design flexibility with Intel®SingleDriverTM
technology and footprint-compatibility
with Intel®PRO 10/100 and
10/100/1000 Connections
The Intel®82541GI Gigabit Ethernet Controller
provides optimized Gigabit networking for
power-sensitive designs, such as mobile PC
applications. This highly efficient controller, with
enhanced power management, consumes less
than 1.0W of power at Gigabit speeds. When
no signal is detected on the wire, the controller
reduces power consumption by switching to
100 or 10 and powering down the physical-
layer circuitry (PHY). When a signal is detected,
the controller automatically negotiates the con-
nection to Gigabit, if available. To reduce the
battery drain, the controller automatically
switches the link to 100Mbps operation when
on battery power.
The Intel 82541GI Gigabit Ethernet Controller
enhances secure manageability and system
health monitoring over the LAN with support
for IPMI 1.5, ASF 2.0 and Advanced Pass
Through. For IPMI designs, the on-board SMBus
port can pass management traffic through the
controller to a management device, such as
a Baseboard Management Controller (BMC).
Alternatively, ASF 2.0 provides manageability
without the cost burden of external hardware
via standardized interfaces. ASF 2.0 circuitry
provides advanced system health and
security alerting plus authenticated remote
power control capabilities.
The Intel 82541GI combines Intel’s fifth-
generation Gigabit MAC design with fully
integrated PHY to provide a standard IEEE
802.3 Ethernet interface for 1000BASE-T,
100BASE-TX and 10BASE-T applications.
In addition, the controller provides a direct
Peripheral Component (PCI) Interconnect
designed to be compliant with the PCI 2.3
bus up to 66MHz. Packaged in a 15x15mm
PBGA, the Intel 82541GI Gigabit Ethernet
Controller is footprint-compatible with the
Intel®82551QM Fast Ethernet Controller
and Intel®82562EX and 82562EZ devices.
Footprint-compatibility, plus Intel SingleDriver
technology allow for a flexible Gigabit Ethernet
or Fast Ethernet implementation on the same
motherboard layout.
With built-in power management capabilities
and enhanced manageability, the Intel 82541GI
Gigabit Ethernet Controller can help extend
battery life for mobile PC users, giving your
designs a competitive edge for tomorrow’s
mobile PCs.
Product Brief
Product Brief Intel®82541GI Gigabit Ethernet Controller
Features Benefits
PCI Bus Features
PCI revision 2.3, 32-bit, 33/66MHz Application flexibility in LOM or embedded use
CLKRUN# Signal PCI clock suspension for low-power mobile design
Gigabit MAC/PHY Advanced Features
64KB configurable RX and TX packet FIFO FIFO size tunable to the application
IEEE 802.3x-compliant flow-control support with software-controllable thresholds Reduced frame loss due to receive FIFO overrun
Programmable host memory receive buffers (256B to 16KB) Efficient usage of system resources
IEEE 802.3ab Auto-Negotiation Automatic link configuration including speed, duplex, and flow control
State-of-the-art DSP/analog architecture Implements digital adaptive equalization, echo, cross-talk and baseline wander cancellation
PHY detects polarity, MDI-X, 2 pair vs. 4 pair cables Easier network installation and maintenance
Host Offloading Features
TCP segmentation (LSO), TCP and UDP checksum off-loading Increased throughput and lower CPU utilization. Compatible with large send offload
on RX and TX feature found in Windows* 2000 and Windows* XP
IEEE 802.1Q VLAN support with VLAN tag insertion and stripping and packet Enables IT staff to easily create multiple virtual LAN segments
filtering for up to 4096 VLAN tags
Jumbo frame support up to 16KB High throughput for large data transfers on networks supporting jumbo frames
Interrupt moderation controls Reduces the number of interrupts generated by receive and transmit operations
Manageability Features
On-chip SMBus 2.0 port Enables IPMI and ASF implementations
ASF 1.0 and 2.0 Provides advanced alerting and remote-control capabilities with industry-standard interfaces
Compliance with PCI Power Management v1.1/ACPI v2.0 PCI power management capability requirements for PC and embedded applications
Wake on LAN* (WoL) support Packet recognition and wakeup for network adapter and LOM applications
without software configuration
Automatic link speed switching from 1000Mb/s down to 10 or 100Mb/s in standby Supports power-down states without software assistance
Low power in standby states
Smart Power Down mode when no signal is detected on the wire Enables very low-power mobile or battery
Power Save mode switches link speed from 1000Mb/s down to 10 or 100Mb/s Manages power consumption based on power source
when on battery power Longer battery life for battery-powered implementations
Additional Device Features
Four programmable LED outputs Customizable indications for link speed, activity, duplex, collisions, and port ID on each port
On-chip power regulator control circuitry Simplified low-cost power supply design
BIOS LAN Disable Pin Enables low-power LAN disable for LOM applications
Characteristics
Electrical
Typical targeted power dissipation 1.0W at D0 1000Mbps
100mW at D3 100Mbps
50mW at D3 wakeup disabled
Environmental
Operating temperature 0°C to 70°C (maximum); does not require a heat sink or forced airflow
Storage temperature -65°C to 140°C
Physical
Package 196-pin PBGA, 1mm ball pitch, 15x15mm (simplifies LOM board designs)
Footprint-compatible with Intel®82540EM, 82540EP and 82541EI Gigabit Ethernet Controller Enables easy migration
Footprint-compatible with Intel®82551QM, 82562EZ and 82562EX Fast Ethernet Controllers Enables a Gigabit Ethernet or 10/100 LOM implementation on the same board
Order Code GD82541GI
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by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied
warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent,
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and product descriptions at any time, without notice.
Copyright © 2003 Intel Corporation. All rights reserved.
Intel, the Intel logo and Intel SingleDriver are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
* Other names and brands may be claimed as the property of others.
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