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2002 National Semiconductor Corporation
www.national.com
ADVANCED INFORMATION
September 2002
General Description
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's 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 perfor-
mance ensures drop-in replacement of existing 10/100
Mb/s equipment with 10/100/1000 Mb/s networking infra-
structure.
Applications
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)
System Diagram
PHYTER
is a registered trademark of National Semiconductor Corporation.
MA
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RJ-45
DP83865
10/100/1000 Mb/s
ETHERNET PHYSICAL LAYER
25 MHz
crystal or oscillator
STATUS
LEDs
DP83820
10/100/1000 Mb/s
ETHERNET MAC
MII
GMII
10BASE-T
100BASE-TX
1000BASE-T
Features
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 ana-
log) 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.
DP83865BVH Gig PHYTER
V
10/100/1000 Ethernet Physical Layer
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
National Semiconductor
Europe
Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
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Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
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Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: ap.support@nsc.com
www.national.com
Physical Dimensions
inches (millimeters) unless otherwise noted
128 Plastic Leaded Flat Pack
NS Package Number VLA128A
Dimensions in mm
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