DP83821
DP83821 is 10/100/1000 Mb/s PCI Ethernet Network Interface Controller manufactured by National Semiconductor.
Description
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 munications with power management support. Packet descriptors and data are transferred via bus-mastering, reducing the burden on the host CPU. The DP83821 can support full duplex 10/100/1000 Mb/s transmission and reception.
Features
- IEEE 802.3 pliant, 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 dwords (1024 bytes)
- BIU pliant with PC 97 and PC 98 Hardware Design Guides, PC 99 Hardware Design Guide draft, ACPI v1.0, PCI Power Management Specification v1, On Now Device Class Power Management Reference Specification
- Network Device Class v1.0a
- Wake on LAN (WOL) support pliant with PC98, PC99, and On Now, including directed packets, Magic Packet with Secure On, ARP packets, pattern match packets, and Phy status change
- GMII/MII provides IEEE 802.3 standard interface to support 10/100/1000 Mb/s physical layer devices
- Ten-Bit Interface (TBI) for support of 1000BASE-X
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System Diagram
PCI Bus
M II D P83821 G M II
1 0 /1 0 0 /1 0 0 0 M b /s PHY
E E P R O M (o p tio n a l) B o o t R O M (o p tio n a l)
© 2001 National Semiconductor Corporation
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1.0 Connection Diagram
RXCLK/RXPMACLK1...
