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LXT322PE

Description
PCM Transceiver, 2-Func, CMOS, PQCC44, PLASTIC, LCC-44
CategoryWireless rf/communication    Telecom circuit   
File Size783KB,36 Pages
ManufacturerLevel One
Download Datasheet Parametric Compare View All

LXT322PE Overview

PCM Transceiver, 2-Func, CMOS, PQCC44, PLASTIC, LCC-44

LXT322PE Parametric

Parameter NameAttribute value
MakerLevel One
Parts packaging codeLCC
package instruction,
Contacts44
Reach Compliance Codeunknown
JESD-30 codeS-PQCC-J44
Number of functions2
Number of terminals44
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
Package shapeSQUARE
Package formCHIP CARRIER
Certification statusNot Qualified
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Telecom integrated circuit typesPCM TRANSCEIVER
Temperature levelINDUSTRIAL
Terminal formJ BEND
Terminal locationQUAD
Base Number Matches1
DATA SHEET
JANUARY 1999
LXT332
General Description
The LXT332 is a fully integrated Dual Line Interface Unit
(DLIU) for both 1.544 Mbps (T1) and 2.048 Mbps (E1)
applications. It features B8ZS/HDB3 encoders and
decoders, and a constant low output impedance transmitter
for high return loss. Transmit pulse shape is selectable for
various line lengths and cable types.
The LXT332 incorporates an advanced crystal-less digital
jitter attenuator, switchable to either the transmit or receive
side. This eliminates the need for an external quartz
crystal. It offers both a serial interface (SIO) for
microprocessor control and a hardware control mode for
stand-alone operation.
The LXT332 offers a variety of advanced diagnostic and
performance monitoring features. It uses an advanced
double-poly, double-metal CMOS process and requires
only a single 5-volt power supply.
Revision 2.1
Dual T1/E1 Line Interface Unit with Crystal-less Jitter Attenuation
Features
• Digital (crystal-less) jitter attenuation, selectable for
receive or transmit path, or may be disabled
• High transmit and receive return loss
• Constant low output impedance transmitter with
programmable equalizer shapes pulses to meet DSX-1
pulse template from 0 to 655 ft.
• Meets or exceeds industry specifications including
ITU G.703, ANSI T1.403, AT&T Pub 62411 and
ITU-T G.742
• Compatible with most industry standard framers
• Complete line driver, data recovery and clock
recovery functions
• Minimum receive signal of 500 mV, with selectable
slicer levels to improve SNR
• Local, remote, and dual loopback functions
• Built-In Self Test with QRSS Pattern Generator
• Transmit/Receive performance monitors with Driver
Fail Monitor (DFM) and Loss of Signal (LOS)
outputs
• Receiver jitter tolerance 0.4 UI from 40 kHz to 100 kHz
• Available in 44-pin PLCC and 44-pin QFP packages
Applications
PCM/Voice Channel Banks
Data Channel Bank/Concentrator
T1/E1 multiplexer
Digital Access and Cross-connect Systems (DACS)
Computer to PBX interface (CPI & DMI)
SONET/SDH Multiplexers
Interfacing Customer Premises Equipment to a CSU
Digital Loop Carrier (DLC) terminals
LXT332 Block Diagram
QRSS / BPV Generator
TCLK
TPOS
TNEG
B8ZS/HDB3
Unipolar
Encoder
Encoder
Enable
Remote
Local
Loopback
Jitter
Attenuator
Transmit
Timing &
Control
TAOS
Enable
Equalizer
Monitor
DFM
Line
Driver
TTIP
TRING
DFM
LEN Select
Serial Word
Decoder
Enable RLOOP
Loopback
Enable
JASEL
LLOOP
Enable
Internal
Clock
Generator
MCLK
HFC
RTIP
RRING
INT0/1
PS0/1
CLKE
SCLK
SDI
SDO
RPOS
RNEG
RCLK
B8ZS/HDB3
Unipolar
Decoder
Peak
Detector
Timing &
Data
Recovery
QRSS Detector
LOS
Processor
Serial
Port
LOS
Transceiver 0
Transceiver 1
Refer to www.level1.com for most current information.


LXT322PE Related Products

LXT322PE LXT322QE
Description PCM Transceiver, 2-Func, CMOS, PQCC44, PLASTIC, LCC-44 PCM Transceiver, 2-Func, CMOS, PQFP44, PLASTIC, QFP-44
Parts packaging code LCC QFP
Contacts 44 44
Reach Compliance Code unknown unknown
JESD-30 code S-PQCC-J44 S-PQFP-G44
Number of functions 2 2
Number of terminals 44 44
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
Package shape SQUARE SQUARE
Package form CHIP CARRIER FLATPACK
Certification status Not Qualified Not Qualified
Nominal supply voltage 5 V 5 V
surface mount YES YES
technology CMOS CMOS
Telecom integrated circuit types PCM TRANSCEIVER PCM TRANSCEIVER
Temperature level INDUSTRIAL INDUSTRIAL
Terminal form J BEND GULL WING
Terminal location QUAD QUAD
Base Number Matches 1 1
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