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XRT82D20IW Datasheet

  • XRT82D20IW

  • SINGLE CHANNEL E1 LINE INTERFACE UNIT

  • 27頁

  • EXAR   EXAR

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謾莽
APRIL 2001
XRT82D20
SINGLE CHANNEL E1 LINE INTERFACE UNIT
REV. 1.0.7
GENERAL DESCRIPTION
The XRT82D20 is a fully integrated, single channel,
Line Interface Unit (Transceiver) for 75
鈩?/div>
or 120
鈩?/div>
E1
(2.048 Mbps) applications. The LIU consists of a
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 trans-
formers on both the Receiver and Transmitter sides,
and supports both 120
鈩?/div>
balanced and 75
鈩?/div>
unbal-
anced interfaces. The receiver can be capacitive
coupled to for cost reduction
FEATURES
鈥?/div>
Complete E1 (CEPT) line interface unit
鈥?/div>
Generates transmit output pulses that are compli-
ant with the ITU-T G.703 Pulse Template for
2.048Mbps (E1) rates
鈥?/div>
On-Chip Pulse Shaping for both 75
鈩?/div>
and 120
鈩?/div>
Line Drivers
F
IGURE
1. B
LOCK
D
IAGRAM OF THE
XRT82D20
鈥?/div>
Clock Recovery and Selectable Crystal-less Jitter
attenuator
鈥?/div>
Compliant with ETS300166 Return Loss
鈥?/div>
Compliant with the ITU-T G.823 Jitter Tolerance
Requirements
鈥?/div>
Remote, Local and Digital Loop backs
鈥?/div>
Declares and Clears LOS per ITU-T G.775
鈥?/div>
Logic Inputs accept either 3.3V or 5.0V levels
鈥?/div>
- 40
0
C to 85
0
C Temperature Range
鈥?/div>
Low Power Dissipation; 145mW with 120
鈩?/div>
or
160mW with 75
鈩?/div>
typical
鈥?/div>
+3.3V or +5V Supply Operation
鈥?/div>
Pin Compatible with the XRT7288
APPLICATIONS
鈥?/div>
PDH Multiplexers
鈥?/div>
SDH Multiplexers
鈥?/div>
Digital Cross-Connect Systems
鈥?/div>
DECT (Digital European Cordless Telephone) Base
Stations
鈥?/div>
CSU/DSU Equipment
鈥?/div>
Test Equipment
TClk
TPOS
TNEG
TTIP
HDB3
Encoder
MUX
Tx Pulse
Shaper
Line
Driver
TRing
Jitter Attenuator
Digital
Loopback
Remote
Loopback
Data &
Timing
Recovery
MUX
Local
Loopback
LOS
Detect
RLOS
RClk
RPOS
RNEG
HDB3
Decoder
Data
Slicer
Peak
Detector
RTIP
RRing
Timing
Generator
MClk
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
鈥?/div>
(510) 668-7000
鈥?/div>
FAX (510) 668-7017
鈥?/div>
www.exar.com

XRT82D20IW 產(chǎn)品屬性

  • XRT82D20

  • 27

  • 集成電路 (IC)

  • 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器

  • -

  • 線路接口裝置（LIU）

  • 1/1

  • E1

  • 3.135 V ~ 3.465 V

  • 表面貼裝

  • 28-BSOJ

  • 28-SOJ

  • 管件

XRT82D20IW相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
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    CLOCK SYNCHRONIZER/ADAPTER FOR COMMUNICATIONS
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  • 英文版
    WAN Clock for T1 and E1 Systems
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    WAN Clock for T1 and E1 Systems
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  • 英文版
    312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
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    312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
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  • 英文版
    650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
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  • 英文版
    650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
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  • 英文版
    CLOCK SYNCHRONIZER/ADAPTER FOR COMMUNICATIONS
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  • 英文版
    SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
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  • 英文版
    SINGLE CHANNEL E1 LINE INTERFACE UNIT
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  • 英文版
    SINGLE CHANNEL E1 LINE INTERFACE UNIT
    EXAR [Exar...
  • 英文版
    QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTE...
    EXAR [Exar...
  • 英文版
    SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT
    EXAR [Exar...
  • 英文版
    SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVER...
    EXAR
  • 英文版
    SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVER...
    EXAR [Exar...
  • 英文版
    QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITT...
    EXAR [Exar...
  • 英文版
    OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JIT...
    EXAR
  • 英文版
    OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JIT...
    EXAR [Exar...
  • 英文版
    OCTAL T1/E1/J1 FRAMER
    EXAR [Exar...
  • 英文版
    BITS (BUILDING INTEGRATED TIMING SUPPLY) CLOCK EXTRACTOR
    EXAR [Exar...

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