DP83821 Datasheet (National Semiconductor) - 10/100/1000 Mb/s PCI Ethernet Network Interface Controller

DP83821, 10/100/1000 Mb/s PCI Ethernet Network Interface Controller

DP83821 is a single-chip 10/100/1000 Mb/s Ethernet Controller for the PCI bus.

It is targeted at highperformance adapter cards and mother boards.

The DP83821 fully implements the V2.2 33 MHz, 32-bit PCI bus interface for host communications with power management support.

Packet descriptors and data

DP83821 10/100/1000 Mb/s PCI Ethernet Network Interface Controller PRELIMINARY February 2001 DP83821 10/100/1000 Mb/s PCI Ethernet Network Interface Controller Virtual LAN (VLAN) and long frame support.

VLAN tag insertion support for transmit packets.

VLAN tag detection and removal for receive packets 802.3x Full duplex flow control, including automatic transmission of Pause frames based on Rx FIFO thresholds IPv.4 checksum task off-loading.

Supports checksum gen

DP83821 Features

* IEEE 802.3 Compliant, 33 Mhz, 32-bit PCI V2.2 MAC/BIU supports data rates from 1 Mb/s to 1000 Mb/s. This allows support for traditional 10 Mb/s Ethernet, 100 Mb/s Fast Ethernet, as well as 1000 Mb/s Gigabit Ethernet.

* Flexible, programmable Bus master - burst sizes of up to 256 dw