The Intelligent Way to Connect
Product Description
The 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
is layout-compatible with Intel
Applications
The Intel 82551QM Fast Ethernet Multifunction PCI/CardBus Controller is designed for use in the
following applications:
Intel
Fast Ethernet Multifunction
PCI/CardBus Controller
Advanced, integrated functions for high-performance
PCI/CardBus Ethernet applications
Product Brief
Advanced offloading features speed data transfers
Enhanced manageability and system monitoring
Footprint compatibility for flexible designs
LAN on Motherboard (LOM) implementations
PCI Mezzanine cards
Industrial PCs and single-board computers
Embedded applications
®
82551QM Fast Ethernet Multifunction PCI/CardBus Controller expands the family of Intel
®
82551QM
®
82540 Gigabit Ethernet controller.
®
82550 and Intel
®
82559 Fast Ethernet controllers, and it
®