Introduction
Unless specifically noted, 82573 refers to the Intel® 82573E, 82573V and 82573L GbE controllers.
82573 GbE controllers are single, compact components with integrated Gigabit Ethernet Media Access Control (MAC) and Physical Layer (PHY) functions. These devices use PCIe* architecture (Revision 1.0a). For desktop, workstation, and value server network designs with critical space constraints, the 82573 enables a GbE implementation in a very small area.
The 82573 provides a standard IEEE 802.3 Ethernet interface for 1000BASE-T, 100BASE-TX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab, respectively). In addition to managing MAC and PHY Ethernet layer functions, the 82573 manages PCIe* packet traffic across its transaction, link, and physical and logical layers.

Product Features
PCIe*
   — x1 PCIe* interface on ICH7 or MCH devices
   — Peak bandwidth: 2 Gb/s per direction
   — Power management
   — High bandwidth density per pin
MAC
   — Optimized transmit and receive queues
   — IEEE 802.3x compliant flow control with software controlled pause times and threshold values
   — Caches up to 64 packet descriptors per queue
   — Programmable host memory receive buffers (256 bytes to 16 KB) and cache line size (16 bytes to 256 bytes)
   — 32 KB configurable transmit and receive FIFO buffer
   — Mechanism available for reducing interrupts generated by transmit and receive operation
   — Descriptor ring management hardware for transmit and receive
   — Optimized descriptor fetching and write-back mechanisms
   — Wide, pipelined internal data path architecture
PHY
   — Integrated PHY for 10/100/1000 Mb/s full and half duplex operation
   — IEEE 802.3ab auto negotiation support
   — IEEE 802.3ab PHY compliance and compatibility
   — DSP architecture implements digital adaptive equalization, echo cancellation, and cross-talk cancellation
Host Offloading
   — Transmit and receive IP, TCP and UDP checksum off-loading capabilities
   — Transmit TCP segmentation, IPv6 offloading, and advanced packet filtering
   — IEEE 802.1q VLAN support with VLAN tag insertion, stripping and packet filtering for up to 4096 VLAN tags
   — Descriptor ring management hardware for transmit and receive Order Number: 315514-002
Manageability
   — Intel® Active Management Technology (Intel® AMT) support (82573E only)
   — Alerting Standards Format 2.0 and advanced pass through support (82573E/V only)
   — Boot ROM Preboot eXecution Environment (PXE) Flash interface support
   — Compliance with PCI Power Management 1.1 and Advanced Configuration and Power Interface (ACPI) 2.0 register set compliant
   — Wake on LAN support
Additional
   — Three activity and link indication outputs that directly drive LEDs
   — Programmable LEDs
   — Internal PLL for clock generation that can use a 25 MHz crystal
   — Power saving feature for the 82573L. During the L1 and L2 link states, the 82573L asserts the Clock Request signal (CLKREQ#) to indicate that its PCIe* reference clock can be gated
   — On-chip power control circuitry
   — Loopback capabilities
   — JTAG (IEEE 1149.1) Test Access Port (TAP) built in silicon
Technology
   — Lead-free 196-pin Thin and Fine Pitch Ball Grid Array (TF-BGA) package
   — Operating temperature: 0° C to 70° C (with external regulators)
   — Operating temperature: 0° to 55° C (with on die 2.5V regulator)
   — Storage temperature -40° C to 125° C