XRT82D20ES Exar, XRT82D20ES Datasheet
XRT82D20ES
Manufacturer Part Number
XRT82D20ES
Description
Peripheral Drivers & Components - PCIs 1 CH E1 LIU
Manufacturer
Exar
Datasheet
1.XRT82D20ES.pdf
(27 pages)
Specifications of XRT82D20ES
Product Category
Peripheral Drivers & Components - PCIs
Rohs
yes
AUGUST 2006
GENERAL DESCRIPTION
The XRT82D20 is a fully integrated, single channel,
Line Interface Unit (Transceiver) for 75 Ω or 120 Ω E1
(2.048 Mbps) applications.
receiver with adaptive data slicer for accurate data
and clock recovery and a transmitter which accepts
either single or dual-rail digital inputs for signal
transmission to the line using a low- impedance
differential line driver. The LIU also includes a crystal-
less jitter attenuator for clock and data smoothing
which, depending on system requirements, can be
selected in either the transmit or receive path.
Coupling the XRT82D20 to the line requires
transformers on both the Receiver and Transmitter
sides, and supports both 120 Ω balanced and 75 Ω
unbalanced interfaces.
capacitive coupled to for cost reduction
FEATURES
•
•
•
Exar
F
IGURE
Complete E1 (CEPT) line interface unit
Generates
compliant with the ITU-T G.703 Pulse Template for
2.048Mbps (E1) rates
On-Chip Pulse Shaping for both 75 Ω and 120 Ω
Line Drivers
RPOS
RNEG
TNEG
TPOS
RClk
TClk
Corporation 48720 Kato Road, Fremont CA, 94538
1. B
LOCK
transmit
D
Decoder
Encoder
Loopback
HDB3
HDB3
IAGRAM OF THE
Digital
output
The receiver can be
The LIU consists of a
Loopback
Remote
pulses
MUX
MUX
XRT82D20
that
are
•
SINGLE CHANNEL E1 LINE INTERFACE UNIT
Jitter Attenuator
Generator
Recovery
(510) 668-7000
Data &
Timing
Timing
•
•
•
•
•
•
•
•
•
•
APPLICATIONS
•
•
•
•
•
•
Clock Recovery and Selectable Crystal-less Jitter
attenuator
Compliant with ETS300166 Return Loss
Compliant with the ITU-T G.823 Jitter Tolerance
Requirements
Remote, Local and Digital Loop backs
Declares and Clears LOS per ITU-T G.775
Logic Inputs accept either 3.3V or 5.0V levels
- 40
Low Power Dissipation; 145mW with 120 Ω or
160mW with 75 Ω typical
+3.3V or +5V Supply Operation
Pin Compatible with the XRT7288
PDH Multiplexers
SDH Multiplexers
Digital Cross-Connect Systems
DECT (Digital European Cordless Telephone) Base
Stations
CSU/DSU Equipment
Test Equipment
0
C to 85
Tx Pulse
Shaper
Detect
•
Slicer
LOS
Data
FAX (510) 668-7017
0
C Temperature Range
Line
Driver
Detector
Loopback
Peak
Local
XRT82D20
•
www.exar.com
REV. 1.0.8
TTIP
TRing
RLOS
RTIP
RRing
MClk
Related parts for XRT82D20ES
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
BiCMOS Fixed, Quad, Voltage Output, Single or Dual Supply 8-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Voltage-Controlled Oscillator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
INTEGRATED LINE TRANSMITTER
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS Microprocessor Compatible Double-Buffered 12-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS 6 BIT HIGH SPEED ANALOG TO DIGITAL CONVERTER
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
8-Channel, Voltage Output 10 MHz Input Bandwidth 8-Bit Multiplying DACs with Serial Digital Data Por
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
15 V CMOS Multiplying10-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS, 6-Bit High-Speed Analog-to-digital Converter
Manufacturer:
Exar Corporation
Datasheet: