ML6673CH Microsemi Corporation, ML6673CH Datasheet

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ML6673CH

Manufacturer Part Number
ML6673CH
Description
Manufacturer
Microsemi Corporation
Datasheet

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Part Number:
ML6673CH
Manufacturer:
MICROLINEAR
Quantity:
20 000
GENERAL DESCRIPTION
The ML6673 is a complete monolithic transceiver for 125
Mbaud MLT-3 encoded data transmission over Category 5
unshielded twisted pair and shielded twisted pair cables.
The ML6673 integrates the baseline restoration function
defined in the TP-PMD standard. The adaptive equalizer in
the ML6673 will accurately compensate for line losses
exceeding the IEEE 802.3u limit of 100m of UTP.
The ML6673 receive section consists of an equalizing filter
with a feedback loop for controlling effective line
compensation. The feedback loop contains a filter and
detection block for determining the proper control signal.
The ML6673 also contains data comparators with
precisely controlled slicing thresholds and an MLT-3 to
NRZI translator.
The ML6673 transmit section accepts ECL 100K
compatible NRZ inputs and converts them to differential
current mode MLT-3 signals. Transmit amplitude is
controlled by a single external resistor.
BLOCK DIAGRAM
RXOUT+
RXOUT–
TXIN+
TXIN–
SD+
SD–
TGNDA
TGNDD
MUX
LPBK
Fast Ethernet/FDDI TP-PMD Transceiver
TO MLT-3
TO NRZI
STATUS
MLT-3
NRZI
LINK
TXOFF
GND
TVCCA
FEATURES
Compliant with IEEE 802.3u Fast Ethernet (100BASE-TX)
standard
Compliant with ANSI X3T12 FDDI over copper
(TP-PMD) standard
Integrated baseline wander correction circuit
Transmitter converts NRZI ECL signals to MLT-3 current
driven outputs
Transmitter can be externally turned off
(high impedence) for true quiet line
Receiver includes adaptive equalizer and MLT-3 to
NRZI decoder
Operates over 100 meters of STP or category 5 UTP
Twisted Pair Cable set by the IEEE 802.3u standards
32-pin PLCC and TQFP
RRSET1
TVCCD
EQUALIZER
CORRECTION
ADAPTIVE
CONTROL
ADAPTIVE
BASELINE
WANDER
RRSET
RTSET1
RRSET2
RVCCA
RTSET
RVCCD
RTSET2
CMREF
TPOUT+
TPOUT–
TPIN+
TPIN–
ML6673
December 1998
1

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ML6673CH Summary of contents

Page 1

Fast Ethernet/FDDI TP-PMD Transceiver GENERAL DESCRIPTION The ML6673 is a complete monolithic transceiver for 125 Mbaud MLT-3 encoded data transmission over Category 5 unshielded twisted pair and shielded twisted pair cables. The ML6673 integrates the baseline restoration function defined in ...

Page 2

ML6673 PIN CONFIGURATION ML6673 32-Pin PCC (Q32 RXOUT+ 5 RVCCD 6 SD– 7 SD+ 8 N/C 9 TGNDD 10 LPBK 11 TXOFF 12 N PIN ...

Page 3

ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. V Supply Voltage Range ................... GND –0. ...

Page 4

ML6673 ELECTRICAL CHARACTERISTICS PARAMETER Differential Outputs (SD , RXOUT , TPOUT ) (Continued) TPOUT+, TPOUT– Output Current HIGH TPOUT+, TPOUT– Output Current LOW TPOUT+, TPOUT– Output Current Offset TPOUT+, TPOUT– OUT CC Output Amplitude Error TPOUT+, TPOUT–V = ...

Page 5

FUNCTIONAL DESCRIPTION The ML6673 MLT-3 transceiver is a physical media dependent transceiver that allows the transmission and reception of 125 Mbaud data over shielded twisted pair cable or category 5 unshielded twisted pair cable. It provides a standard Physical Media ...

Page 6

ML6673 Application Example of ML6673 Configured for 2.0V Note 1. Split 100K ECL terminations are 82ý and 130ý to VCC and GND respectively. Note 2. Recommended power supply bypass capacitors are 0.1µF with optional 10µF tantalum in parallel. Note 3. ...

Page 7

PHYSICAL DIMENSIONS 0.354 BSC (9.00 BSC) 0.276 BSC (7.00 BSC) 1 PIN 0.032 BSC (0.08 BSC) 0.485 - 0.495 (12.32 - 12.57) 0.450 - 0.456 (11.43 - 11.58) 0.042 - 0.048 (1.07 - 1.22) 9 0.050 BSC ...

Page 8

... ML6673 ORDERING INFORMATION PART NUMBER ML6673CQ ML6673CH © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Micro Linear Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946; 2619299. Other patents are pending. ...

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