LXT972M Datasheet, PDF (1/92 Pages) Intel Corporation – Single-Port 10/100 Mbps PHY Transceiver

Intel^® LXT972M Single-Port 10/100 Mbps
PHY Transceiver
Datasheet
The Intel^® LXT972M Single-Port 10/100 Mbps PHY Transceiver is an IEEE compliant Fast
Ethernet PHY Transceiver that directly supports both 100BASE-TX and 10BASE-T applications. It
provides a Media Independent Interface (MII) for easy attachment to 10/100 Media Access
Controllers (MACs). Both full and half-duplex operation at 10 Mbps and 100 Mbps is supported.
Operation mode can be set to auto-negotiation, parallel detection, or manual control. The device is
powered from a single 3.3V power supply.
Applications
■ Combination 10BASE-T/100BASE-TX
Network Interface Cards (NICs)
■ Wireless access points
■ Network printers
Product Features
■ 10/100 Personal Computer Memory Card
International Association (PCMCIA) cards
■ Cable Modems and Set-Top Boxes
■ 3.3V Operation
■ IEEE 802.3-compliant 10BASE-T or
100BASE-TX with integrated filters
■ Auto-negotiation and parallel detection
■ MII interface with extended register
capability
■ Robust baseline wander correction
■ Carrier Sense Multiple Access / Collision
Detection (CSMA/CD) or full-duplex
operation
■ JTAG boundary scan
■ MDIO serial port or hardware pin
configurable
■ Integrated, programmable LED drivers
■ 48-pin Low-profile Quad Flat Package
RESET_L
ADDR[1:0]
MDIO
MDC
TX_EN
TXD[3:0]
TX_CLK
LED/CFG[3:1]
COL
RX_CLK
RXD[3:0]
RX_DV
CRS
RX_ER
Management /
Mode Select
Logic
Register Set
Clock
Generator
Power Supply
Parallel/Serial
Converter
Manchester
Encoder
10
Scrambler 100
& Encoder
Register
Set
Auto
Negotiation
OSP
Pulse
Shaper
+
TP
Driver _-
TP Out
JTAG
Collision
Detect
Clock
Generator
Carrier Sense
Data Valid
Error Detect
Serial-to-
Parallel
Converter
Manchester
10 Decoder
100
Decoder &
Descrambler
Media
Select
OSP
Slicer
OSP
Adaptive EQ with
Baseline Wander
Cancellation
+
100TX
-
+
10BT
-
TP In
VCC
GND
REFCLK/XI
XO
TPOP
TPON
TDI
5 ^TDO
TMS
TCK
TRST_L
TPIP
TPIN
B3387-13
Document Number: 302875-005
Revision Date: 27-Oct-2005