Product Brief
Intel 82541PI Gigabit
Ethernet Controller
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
generation Gigabit MAC design with fully
The Intel 82541PI Gigabit Ethernet Controller
integrated PHY to provide a standard IEEE
provides optimized Gigabit networking for
802.3 Ethernet interface for 1000BASE-T,
power-sensitive designs, such as mobile PC
100BASE-TX and 10BASE-T applications.
applications. This highly efficient controller, with
In addition, the controller provides a direct
enhanced power management, consumes less
Peripheral Component (PCI) Interconnect
than 1.0W of power at Gigabit speeds. When
designed to be compliant with the PCI 2.3
no signal is detected on the wire, the controller
bus up to 66MHz. Packaged in a 15x15mm
reduces power consumption by switching to
PBGA, the Intel 82541PI Gigabit Ethernet
100 or 10 and powering down the physical-
Controller is footprint-compatible with the
layer circuitry (PHY). When a signal is detected,
Intel® 82551QM Fast Ethernet Controller
the controller automatically negotiates the con-
and Intel® 82562EX and 82562EZ devices.
nection to Gigabit, if available. To reduce the
Footprint-compatibility, plus Intel SingleDriver
battery drain, the controller automatically
technology allow for a flexible Gigabit Ethernet
switches the link to 100Mbps operation when
or Fast Ethernet implementation on the same
on battery power.
motherboard layout.
The Intel 82541PI Gigabit Ethernet Controller
With built-in power management capabilities
enhances secure manageability and system
and enhanced manageability, the Intel 82541PI
health monitoring over the LAN with support
Gigabit Ethernet Controller can help extend
for IPMI 1.5, ASF 2.0 and Advanced Pass
battery life for mobile PC users, giving your
Through. For IPMI designs, the on-board SMBus
designs a competitive edge for tomorrow’s
port can pass management traffic through the
mobile PCs.
Intel in
The Intel 82541PI combines Intel’s fifth-
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.
Product Brief
Intel® 82541PI Gigabit Ethernet Controller
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
filtering for up to 4096 VLAN tags
Enables IT staff to easily create multiple virtual LAN segments
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
when on battery power
Manages power consumption based on power source
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
Typical targeted power dissipation
1.0W at D0 1000Mbps
100mW at D3 100Mbps
50mW at D3 wakeup disabled
Operating temperature
Storage temperature
0°C to 70°C (maximum); does not require a heat sink or forced airflow
-65°C to 140°C
Footprint-compatible with Intel® 82540EM, 82540EP, 82541EI and 82541GI
Gigabit Ethernet Controllers
Footprint-compatible with Intel® 82551QM, 82562EZ and 82562EX Fast Ethernet Controllers
Order Code
196-pin PBGA, 1mm ball pitch, 15x15mm (simplifies LOM board designs)
Enables easy migration
Enables a Gigabit Ethernet or 10/100 LOM implementation on the same board
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Copyright © 2004 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.
Printed in USA.
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