NSC DP83865BVH

September 2002
DP83865BVH Gig PHYTER® V
10/100/1000 Ethernet Physical Layer
General Description
Features
The DP83865 is a fully featured Physical Layer transceiver ■ Fully compliant with IEEE 10BASE-T, 100BASE-TX and
with integrated PMD sublayers to support 10BASE-T,
1000BASE-T specifications (802.3u, 802.3z, 802.3ab).
100BASE-TX and 1000BASE-T Ethernet protocols.
■ Integrated PMD sublayer featuring adaptive equalization
and baseline wander compensation according to ANSI
The DP83865 is an ultra low power version of the DP83861
X3.T12.
and DP83891. It uses advanced 0.18 um, 1.8 V CMOS
technology, fabricated at National Semiconductor’s South ■ 3.3 V or 2.5 V MAC interfaces:
Portland, Maine facility.
– IEEE 802.3u MII
The DP83865 is designed for easy implementation of
– IEEE 802.3z GMII
10/100/1000 Mb/s Ethernet LANs. It interfaces directly to
Twisted Pair media via an external transformer. This device ■ User programmable GMII pin ordering.
interfaces directly to the MAC layer through the IEEE ■ IEEE 802.3u Auto-Negotiation and Parallel Detection
802.3u Standard Media Independent Interface (MII) or the
– Fully Auto-Negotiates between 1000 Mb/s, 100 Mb/s,
IEEE 802.3z Gigabit Media Independent Interface (GMII).
and 10 Mb/s full duplex and half duplex devices
The DP83865 is a fourth generation Gigabit PHY with field ■ LED support for activity, full / half duplex, link1000,
proven architecture and performance. Its robust perforlink100 and link10 or user programmable (manual
mance ensures drop-in replacement of existing 10/100
on/off).
Mb/s equipment with 10/100/1000 Mb/s networking infra■ Supports 25 MHz operation with crystal or oscillator.
structure.
■ 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
Applications
alternative supply for I/O voltage.
The DP83865 fits applications in:
■ User programmable interrupt.
■ 10/100/1000 Mb/s capable node cards
■ Supports Auto-MDIX at 10, 100 and 1000 Mb/s.
■ Switches with 10/100/1000 Mb/s capable ports
■ Supports JTAG (IEEE1149.1).
■ High speed uplink ports (backbone)
■ Ultra low power consumption of one watt typical.
■ Management port (MDC / MDIO).
■ 128-pin PQFP package (14mm x 20mm).
■ WOL support.
System Diagram
10/100/1000 Mb/s
ETHERNET MAC
DP83865
10/100/1000 Mb/s
ETHERNET PHYSICAL LAYER
25 MHz
crystal or oscillator
MAGNETICS
DP83820
MII
GMII
10BASE-T
100BASE-TX
1000BASE-T
RJ-45
STATUS
LEDs
PHYTER® is a registered trademark of National Semiconductor Corporation.
©2002 National Semiconductor Corporation
www.national.com
DP83865BVH Gig PHYTER® V 10/100/1000 Ethernet Physical Layer
ADVANCED INFORMATION
DP83865BVH Gig PHYTER® V 10/100/1000 Ethernet Physical Layer
Physical Dimensions inches (millimeters) unless otherwise noted
128 Plastic Leaded Flat Pack
NS Package Number VLA128A
Dimensions in mm
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