82540EP — Networking Silicon

2.3PHY Specific Features

 

Features

 

 

Benefits

 

 

 

 

 

Integrated PHY for 10/100/1000 Mbps full and half

Smaller footprint and lower power dissipation

 

duplex operation

 

 

compared to multi-chip MAC and PHY solutions

 

 

 

 

 

IEEE 802.3ab Auto-Negotiation support

• Automatic link configuration including speed,

 

 

duplex, and flow control

 

 

 

 

 

 

 

 

 

IEEE 802.3ab PHY compliance and compatibility

• Robust operation over the installed base of

 

 

Category-5 (CAT-5) twisted pair cabling

 

 

 

 

 

 

 

 

 

State-of-the-art DSP architecture implements digital

Robust performance in noisy environments

 

adaptive equalization, echo cancellation, and cross-

Tolerance of common electrical signal

 

talk cancellation

 

 

impairments

 

 

 

 

 

PHY ability to automatically detect polarity and cable

Easier network installation and maintenance

 

lengths and MDI versus MDI-X cable at all speeds

End-to-end wiring tolerance

 

 

 

 

 

 

 

 

 

 

 

Features

 

 

Benefits

 

 

 

 

 

Transmit and receive IP, TCP and UDP checksum off-

Lower CPU utilization

 

loading capabilities

 

 

 

 

 

 

 

 

 

 

 

 

• Increased throughput and lower CPU utilization

 

Transmit TCP segmentation

 

Large send offload feature (in Microsoft*

 

 

 

 

Windows* XP) compatible

 

 

 

 

 

 

 

• 16 exact matched packets (unicast or multicast)

 

 

 

4096-bit hash filter for multicast frames

 

Advanced packet filtering

 

Promiscuous (unicast and multicast) transfer

 

 

 

 

mode support

 

 

 

• Optical filtering of invalid frames

 

 

 

 

 

IEEE 802.1q VLAN support with VLAN tag insertion,

• Ability to create multiple virtual LAN segments

 

stripping and packet filtering for up to 4096 VLAN tags

 

 

 

 

 

 

 

 

Descriptor ring management hardware for transmit

• Optimized fetching and write-back mechanisms for

 

 

efficient system memory and PCI bandwidth

 

and receive

 

 

 

 

 

usage

2.4

HostOffloading

Features

 

 

 

16 KByte jumbo frame support

 

High throughput for large data transfers on

 

 

 

 

networks supporting jumbo frames

 

 

 

 

 

Interrupt coalescing (multiple packets per interrupt)

• Increased throughput by reducing interrupts

 

 

generated by transmit and receive operations

 

 

 

 

 

 

 

 

 

6

Datasheet

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Image 12
Intel 82540EP manual HostOffloading, PHY Specific Features