ML6674CH Micro Linear, ML6674CH Datasheet

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ML6674CH

Manufacturer Part Number
ML6674CH
Description
ATM 155Mbps UTP transceiver
Manufacturer
Micro Linear
Datasheet

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ML6674CH
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Part Number:
ML6674CH
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MICROLINEAR
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GENERAL DESCRIPTION
The ML6674 is a complete monolithic transceiver for
155Mbps NRZ encoded data transmission over category
5 unshielded twisted pair (UTP) and shielded twisted pair
(STP) cables. The ML6674 is compliant with the ATM
155Mbps Twisted Pair Specification. The ML6674 includes
the baseline restoration function and adaptive
equalization which will accurately compensate for line
losses exceeding 100m of UTP.
The ML6674 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.
An ECL 100K compatible buffer at the output interfaces
directly with ATM physical interface chips.
The ML6674 transmit section accepts ECL 100K
compatible NRZ inputs.
BLOCK DIAGRAM
RXOUT+
RXOUT–
TXIN+
TXIN–
SD+
SD–
TGNDA
TGNDD
MUX
LPBK
CONTROL REFERENCE
ADAPTIVE
TXOFF
ATM 155Mbps UTP Transceiver
STATUS
LINK
RGND
TVCCA
FEATURES
Complies with ATM Forum 155Mbps twisted pair
specification
Integrated baseline wander correction circuit
Integrated adaptive equalization
Transmitter can be externally turned off
(high impedence) for true quiet line
Operates over 100 meters of STP or category 5 UTP
Twisted Pair Cable
32-pin PLCC and TQFP
RRSET1
TVCCD
EQUALIZER
ADAPTIVE
CONTROL
ADAPTIVE
RRSET
RTSET1
RRSET2
RVCCA
RTSET
RVCCD
RTSET2
CMREF
TPOUT+
TPOUT–
TPIN+
TPIN–
ML6674
July 1999
1

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ML6674CH Summary of contents

Page 1

GENERAL DESCRIPTION The ML6674 is a complete monolithic transceiver for 155Mbps NRZ encoded data transmission over category 5 unshielded twisted pair (UTP) and shielded twisted pair (STP) cables. The ML6674 is compliant with the ATM 155Mbps Twisted Pair Specification. The ...

Page 2

ML6674 PIN CONFIGURATION ML6674 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 limits beyond which the life of the integrated circuit may be impaired. All voltages unless otherwise specified are measured with respect to ground. V Supply Voltage Range .................. GND –0. ...

Page 4

ML6674 ELECTRICAL CHARACTERISTICS PARAMETER Differential Outputs (SD±, RXOUT±, TPOUT±) (Continued) TPOUT+, TPOUT– DifferentialOutput Current LOW TPOUT+, TPOUT– Output Current Offset TPOUT+, TPOUT– OUT CC Output Amplitude Error TPOUT+, TPOUT– ±1.1V OUT CC Output Voltage Compliance AC ...

Page 5

FUNCTIONAL DESCRIPTION The ML6674 transceiver is a physical media dependent transceiver that allows the transmission and reception of 155 Mbps data over 100 meters over shielded twisted pair cable or category 5 unshielded twisted pair cable. The transmit section accepts ...

Page 6

ML6674 0.1 F RVCCD TXIN+ FROM PHY TXIN– NOTE 1 SD+ TO PHY SD– RXOUT+ TO PHY RXOUT– LPBK TXOFF TGNDD TGNDA RGND FROM PHY Application Example of ML6674 Configured for 1.0V Note 1. Split 100K ECL terminations are 82W ...

Page 7

PHYSICAL DIMENSIONS 0.485 - 0.495 (12.32 - 12.57) 0.450 - 0.456 (11.43 - 11.58) PIN 1 ID 0.042 - 0.048 (1.07 - 1.22) 9 0.050 BSC (1.27 BSC) 0.026 - 0.032 (0.66 - 0.81) 0.013 - 0.021 (0.33 - 0.53) ...

Page 8

... ML6674 ORDERING INFORMATION PART NUMBER ML6674CQ ML6674CH © Micro Linear 1999. trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 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; 5,652,479; 5,661,427; 5,663,874; 5,672,959; 5,689,167; ...

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