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LXT6155LE Datasheet

  • LXT6155LE

  • Telecomm/Datacomm

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Intel
庐
LXT6155
155 Mbps SDH/SONET/ATM Transceiver
Datasheet
The Intel
庐
LXT6155 is a high speed fully integrated transceiver designed for 155 Mbps SDH/
SONET/ATM transmission system applications. The Intel
庐
LXT6155 provides a LVPECL
interface for fiber optics modules, and a CMI interface for coax cable drive. These circuits are
implemented using Intel鈥檚 proven low power 3.3V CMOS analog and digital circuits. The
transmitter incorporates a parallel-to-serial converter, a frequency multiplier PLL, CMI line
encoders, and line interfaces for both coax cable and optical fiber. The receiver incorporates an
adaptive equalizer, a clock recovery PLL, Loss of Signal (LOS) detector, CMI and NRZ
decoders, a serial-to-parallel converter, and an SDH/SONET frame byte detector/aligner. At the
system interface, the Intel
庐
LXT6155 offers both parallel 8-bit and serial differential interfaces.
The Intel
庐
LXT6155 also operates in either Hardware stand-alone mode or Software mode.
Software mode is controlled by a serial microprocessor (碌P) to program formats and operating/
test modes.
Product Features
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Complies with:
鈥?Bellcore SONET GR-253
鈥?ITU-T G.703/813/958 STM1
Two line interface formats:
鈥?Fiber LVPECL NRZ
鈥?Coax CMI
Transmit synthesizer PLL
Receive clock recovery PLL
Adaptive CMI equalizer
Analog circuitry for transformer drive
Programmable LOS function
CMI encoder and decoder
Serial/Parallel and Parallel/Serial
conversion
Byte alignment for SDH/SONET frames
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Two modes of operation:
鈥?Microprocessor controlled; software
mode
鈥?Stand-alone; hardware mode
No external crystal required. A 19.44 MHz
crystal is optional
Low power consumption (less than 760
mW typical)
Operates from a single 3.3 V supply
64 pin LQFP package
Applications
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OC3/STM1 SDH/SONET Cross Connects
OC3/STM1 SDH/SONET Add/Drop Mux
OC3/STM1 Transmission Systems
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OC3/STM1 Short Haul Serial Links
OC3/STM1 ATM/WAN Transmission
Systems
OC3/STM1 ATM/WAN Access Systems
Order Number: 249612-003
August 2002

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