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ML2652 Datasheet(PDF) 3 Page - Micro Linear Corporation

Part No. ML2652
Description  10Base-T Physical Interface Chip
Download  23 Pages
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Maker  MICRO-LINEAR [Micro Linear Corporation]
Homepage  http://www.microlinear.com
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ML2652 Datasheet(HTML) 3 Page - Micro Linear Corporation

 
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ML2652/ML2653
PIN DESCRIPTION
NAME
FUNCTION
VCC
Positive supply. +5V
GND
Ground. 0 volts. All inputs and outputs referenced
to this point.
CLK
Clock input. There must be either a 20 MHz
crystal or a 20 MHz clock between this pin
and GND.
Tx+
Transmit positive twisted pair output. This output
is a current source that drives the twisted pair
cable through a pulse transformer.
Tx–
Transmit negative twisted pair output. This output
is a current source that drives the twisted pair
cable through a pulse transformer.
Rx+
Receive positive twisted pair input. This input
receives data from the twisted pair cable through
a pulse transformer.
Rx–
Receive negative twisted pair input. This input
receives data from the twisted pair cable through
a pulse transformer.
DO+
AUI positive transmit output. AUI transmit data
output to optional external transceiver.
DO–
AUI negative transmit output. AUI transmit data
output to optional external transceiver.
DI+
AUI positive receive data input from optional
external transceiver.
NAME
FUNCTION
DI–
AUI negative receive data input from optional
external transceiver.
CI+
AUI positive collision input from optional external
transceiver.
CI–
AUI negative collision input from optional
external transceiver.
RTX
Transmit current set. An external resistor between
this pin and GND programs the absolute value of
output current on Tx±.
TxC
Transmit clock output. Digital output which clocks
the transmit data (TxD) into the device from the
controller.
TxD
Transmit data input. Digital input which contains
transmit data from the controller.
TxE
Transmit enable input. Digital input from the
controller that indicates when the transmit data
(TxD) is valid.
COL
Collision output Digital output to the controller
which indicates when a collision condition is
present.
RxC
Receive clock output. Digital output which clocks
receive data (RxD) from the device into the
controller.
ML2653 BLOCK DIAGRAM
TxE
TxD
LPBK
RxC
RxE
RxD
CLK
CONTROLLER
INTERFACE
MANCHESTER
ENCODER
MANCHESTER
DECODER
LEDS
JABBER
DETECT
LINK
PULSE
XMT
WAVEFORM
GEN & LPF
COLLISION
DETECT
RECEIVER
CURRENT
DRIVEN XMT
OUTPUT
DRIVER
RECEIVE
LPF
OSC
XMT/RCV
RPOL
LTP
CS0 CS1 CS2 FD
VCC
VCC
GND GND
RTX
Tx+
Tx–
Rx+
Rx–
RSL
DATA
ENABLE
COLLISION
DATA
ENABLE
TxC
COL


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