DP83861VQM-3 ,EN Gig PHYTER 10/100/1000M Ethernet Physical Layer [Life-time buy]Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6.6 GMII Setup and ..
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DP83861VQM-3
EN Gig PHYTER 10/100/1000M Ethernet Physical Layer [Life-time buy]
61
Gig
YTER
10
/10
0 E
rnet
Phy
Lay
General DescriptionThe DP83861 is a full featured Physical Layer transceiver
with integrated PMD sublayers to support 10BASE-T,
100BASE-TX and 1000BASE-T Ethernet protocols.
The DP83861 uses state of the art 0.18 μm , 1.8 V/3.3 V
CMOS technology, fabricated at National Semiconductor’s
South Portland Maine facility.
The DP83861 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).
ApplicationsThe DP83861 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 DiagramETHERNET
DP83861STATUS
LEDs
ETI
RJ-45100BASE-TX
MII/GMII
MAC
CLOCK
125 MHz or 25 MHz
1000BASE-T
DP8382010BASE-T
10/100/1000Mb/s
10/100/1000Mb/s
Ethernet Physical Layer
Features 100BASE-TX and 1000BASE-T compliant Fully compliant to IEEE 802.3u 100BASE-TX and IEEE
802.3z/ab 1000BASE-T specifications. Fully integrated
and fully compliant ANSI X3.T12 PMD physical sublayer
that includes adaptive equalization and Baseline Wan-
der compensation 10BASE-T compatible 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 Interoperates with first generation 1000BASE-T Physical
layer transceivers 3.3V MAC interfaces: IEEE 802.3u MII IEEE 802.3z GMII LED support: Link, Speed, Activity, Collision, TX and RX Supports 125 MHz or 25 MHz reference clock Requires only one 1.8 V and one 3.3 V supply Supports MDIX at 10, 100, and 1000 Mb/s Supports JTAG (IEEE1149.1) Dissipates 1 watt in 10/100 Mb/s mode Programmable Interrupts 208-pin PQFP package
DP83861VQM-3 EN Gig PHYTER
10/100/1000 Ethernet Physical Layer
PRELIMINARYApril 2001