DP83865  Product Folder

The DP83865 is a fully featured Physical Layer transceiver with integrated PMD sublayers to support 10BASE-T, 100BASE-TX and 1000BASE-T Ethernet protocols.

The DP83865 is an ultra low power version of the DP83861 and DP83891. It uses advanced 0.18 um, 1.8 V CMOS technology, fabricated at National Semiconductor, South Portland, Maine facility.

The DP83865 is designed for easy implementation of 10/100/1000 Mb/s Ethernet LANs. It interfaces directly to Twisted Pair media via an external transformer. This device interfaces directly to the MAC layer through the IEEE 802.3u Standard Media Independent Interface (MII) or the IEEE 802.3z Gigabit Media Independent Interface (GMII).

The DP83865 is a fourth generation Gigabit PHY with field proven architecture and performance. Its robust performance ensures drop-in replacement of existing 10/100 Mb/s equipment with 10/100/1000 Mb/s networking infrastructure.

• Fully compliant with IEEE 10BASE-T, 100BASE-TX and 1000BASE-T specifications (802.3u, 802.3z, 802.3ab).
• Integrated PMD sublayer featuring adaptive equalization and baseline wander compensation according to ANSI X3.T12.
• 3.3 V or 2.5 V MAC interfaces:
• IEEE 802.3u MII
• IEEE 802.3z GMII
• User programmable GMII pin ordering.
• IEEE 802.3u Auto-Negotiation and Parallel Detection
• Fully Auto-Negotiates between 1000 Mb/s, 100 Mb/s, and 10 Mb/s full duplex and half duplex devices
• LED support for activity, full / half duplex, link1000, link100 and link10 or user programmable (manual on/off).
• Supports 25 MHz operation with crystal or oscillator.
• Requires only two power supplies, 1.8 V (core and analog) and 2.5 V (analog and I/O). 3.3V is supported as an alternative supply for I/O voltage.
• User programmable interrupt.
• Supports Auto-MDIX at 10, 100 and 1000 Mb/s.
• Supports JTAG (IEEE1149.1).
• Ultra low power consumption of one watt typical.
• Management port (MDC / MDIO).
• 128-pin PQFP package (14mm x 20mm).
• WOL support.

The DP83865 fits applications in:

• 10/100/1000 Mb/s capable node cards
• Switches with 10/100/1000 Mb/s capable ports
• High speed uplink ports (backbone)