Intel® 82541PI Gigabit Ethernet Controller
The Intelligent Way to Connect | Features & Benefits | Characteristics

Order Code:GD82541PI
High-performance, power-optimized Gigabit connection for mobile and desktop PCI-based designs
The Intel® 82541PI 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 connection to Gigabit, if available. To reduce the battery drain, the controller automatically switches the link to 100Mbps operation when on battery power.

The Intel 82541PI 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 82541PI 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 82541PI 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 82541PI Gigabit Ethernet Controller can help extend battery life for mobile PC users, giving your designs a competitive edge for tomorrow's mobile PCs.
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® SingleDriver™ technology and footprint-compatibility with Intel® PRO 10/100 and 10/100/1000 Connections
Features and 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 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
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

Typical targeted power dissipation
1.0W at D0 1000Mbps
300mW at D3 100Mbps
50mW at D3 wakeup disabled
Operating temperature

Storage temperature
0C to 70C (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
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