The Intelligent Way to Connect
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Advanced offloading features speed data transfers
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Enhanced manageability and system monitoring
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Footprint compatibility for flexible designs
Product Description
The Intel
82551QM Fast Ethernet Multifunction PCI/CardBus Controller expands the family of Intel
8255x controllers. The 82551QM provides excellent performance with offloading of TCP, UDP and IP
checksums, plus support for TCP segmentation offload for operations such as Large Send.
The 82551QM, with optimized 32-bit interface and efficient scatter-gather bus mastering capabilities,
enables the controller to perform high-speed data transfers over the PCI bus or CardBus. These
capabilities accelerate the processing of high-level commands and operations, lowering CPU utilization.
The device's architecture enables efficient data flow from the bus interface unit to the 3KB transmit and
receive FIFOs, providing the perfect balance between the wire and system bus. In addition, multiple
priority queues augment Quality of Service (QoS) performance.
The 82551QM integrates advanced manageability features into one component. It includes support for
Alert on LAN* 2 and Alerting Standards Format (ASF) bi-directional alerting. A System Management
Bus (SMB) interface can be used with bus management controllers. Both legacy and ASF sensor
polling are supported, as well as remote-control capabilities. The 82551QM embeds the Universal NIC
Driver Interface (UNDI) code, allowing it to support Pre-boot Execution Environment (PXE) without
the use of an additional external ROM.
The 82551QM is pin-compatible with the Intel
82550 and Intel
82559 Fast Ethernet controllers, and it
is layout-compatible with Intel
82540 Gigabit Ethernet controller.
Applications
The Intel 82551QM Fast Ethernet Multifunction PCI/CardBus Controller is designed for use in the
following applications:
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LAN on Motherboard (LOM) implementations
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PCI Mezzanine cards
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Industrial PCs and single-board computers
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Embedded applications
Intel
82551QM
Fast Ethernet Multifunction
PCI/CardBus Controller
Advanced, integrated functions for high-performance
PCI/CardBus Ethernet applications
Product Brief
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Intel is a trademark or registered trademark of Intel Corporation or its subsidiaries in the United States and other countries.
Intel Corporation 2002. All rights reserved.
Features
Benefits
Monitoring/Safety Features
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ASF 1.0 support
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Supports standards-based alerting
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MDI/MDI-X and Hardware Integrity (HWI) alerting
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Indicates cabling problems that might impact link performance
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Integrated Alert on LAN* 2 support
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Increases Alert on LAN functionality
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Eliminates need for a separate Alert on LAN 2 device
Performance-enhancement Features
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Offloads TCP, UDP, and IP checksums from PC processor
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Speeds data transfers
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Supports TCP segmentation offloading
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Improves Large Send operations
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Multiple priority transmit queues
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Enables packet prioritization for faster delivery of business-critical data
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Combination 10/100Mbps Fast Ethernet controller and physical layer
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Provides low-cost network connectivity for LOM or PCI adapters
interface with glueless 32-bit PCI bus master interface
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Reduces board space requirements and external support circuitry
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Improved dynamic transmit chaining
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Enhances performance
Power-reduction Features
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Reduced D3 power consumption
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Improves battery life in mobile applications
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Low-power 3.3V device
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Enhanced power management
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Minimizes power requirements
Management/Compatibility Features
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Backwards-compatible software drivers
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Allows systems developed with the 82550 or 82559 to use the same
device drivers
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Supports robust, well-tested, high-performance drivers
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Wired for Management (WfM) and Net PC Specifications compliant
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Enables PCs to be remotely managed for lower total cost of ownership
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Advanced Configuration and Power Interface (ACPI)
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Complies with standards for LOM or NIC designs for next-generation
Specifications compliant
Fast Ethernet-connected systems
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Magic Packet filtering for Wake on LAN
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Provides various power-down states and the ability to "wake up" on a unique
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ARP and flexible frame filtering
packet addressed to the system
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Permits development of virtually connected systems that will exit from a lower
power state upon receipt of directed packets
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Allows virtually connected Ipv6, Ipv4, Windows NT*, or next-generation systems
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Modem interface for combination solutions
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Allows single-NIC adapter with modem and LAN connectivity
Physical Features
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Footprint-compatible with the Intel
82540 Gigabit Ethernet controller
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Enables single-board design, accommodating either 10/100/1000Mbps or
10/100Mbps Ethernet
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Provides an easy and safe migration path to Gigabit Ethernet
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Integrated UNDI ROM support
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Minimizes requirement for external ROM
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Thin BGA 15x15mm package
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Minimizes board space requirements
Characteristics
Electrical
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Power Supply
3.3V +/ 5%
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Power Dissipation
0.5W (typical)
Environmental
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Operating Temperature
0C to 85C (maximum)
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Storage Temperature
-65C to 140C
Physical
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Package
196-pin BGA (1mm ball pitch)
For more information, contact your Intel
sales representative
.
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