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參數(shù)資料
型號(hào)： XRT75R12
廠商： Exar Corporation
英文描述： TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
中文描述： 第十二章通道E3/DS3/STS-1線路接口單元與抖動(dòng)衰減器
文件頁(yè)數(shù)： 1/89頁(yè)
文件大小： 457K
代理商： XRT75R12
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
PRELIMINARY
XRT75R12
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
OCTOBER 2003
GENERAL DESCRIPTION
REV. P1.0.2
The XRT75R12 is a twelve channel fully integrated
Line Interface Unit (LIU) featuring EXAR’s R
3
Technology (Reconfigurable, Relayless Redundancy)
for E3/DS3/STS-1 applications. The LIU incorporates
12 independent Receivers, Transmitters and Jitter
Attenuators in a single 420 Lead TBGA package.
Each
channel
of
the
independently configured to operate in E3 (34.368
MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz).
Each transmitter can be turned off and tri-stated for
redundancy support or for conserving power.
The XRT75R12’s differential receiver provides high
noise interference margin and is able to receive data
over 1000 feet of cable or with up to 12 dB of cable
attenuation.
The XRT75R12 incorporates an advanced crystal-
less jitter attenuator per channel that can be selected
either in the transmit or receive path. The jitter
XRT75R12
can
be
attenuator performance meets the ETSI TBR-24 and
Bellcore GR-499 specifications.
The XRT75R12 provides a Parallel Microprocessor
Interface for programming and control.
The XRT75R12 supports analog, remote and digital
loop-backs. The device also has a built-in Pseudo
Random Binary Sequence (PRBS) generator and
detector with the ability to insert and detect single bit
error for diagnostic purposes.
APPLICATIONS
E3/DS3 Access Equipment
DSLAMs
Digital Cross Connect Systems
CSU/DSU Equipment
Routers
Fiber Optic Terminals
F
IGURE
1. B
LOCK
D
IAGRAM
OF
THE
XRT 75R12
ORDERING INFORMATION
P
ART
N
UMBER
P
ACKAGE
O
PERATING
T
EMPERATURE
R
ANGE
XRT75R12IB
420 Lead TBGA
-40
°
C to +85
°
C
XRT75R12
XRT75R12
Channel 11
Channel 0
Channel n...
Device
Monitor
MTIP_n
MRing_n
DMO_n
Timing
Control
Tx
Pulse
Shaping
HDB3/
B3ZS
Encoder
Tx
Control
Jitter
Attenuator
MUX
Line
Driver
Remote
LoopBack
HDB3/
B3ZS
Decoder
MUX
AGC/
Equalizer
Peak Detector
LOS
Detector
Slicer
Jitter
Attenuator
μ
Processor Interface
Local
LoopBack
Clock & Data
Recovery
Clock
Synthesizer
CS
WR
Addr[7:0]
D[7:0]
PCLK
INT
TxON
TxClk_n
TxPOS_n
TxNEG_n
RxClk_n
RxPOS_n
RxNEG/LCV_n
RLOS_n
RLOL_n
RTIP_n
RRing_n
TTIP_n
TRing_n
CLKOUT_n
SFM_en
E3Clk
DS3Clk
STS-Clk/12M
ICT
Pmode
RESET
RDY
相關(guān)PDF資料
PDF描述
XRT75R12IB TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75VL00 E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75VL00IV E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT75R12_07 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
XRT75R12_0710 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
XRT75R12D 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET
XRT75R12D_06 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET
XRT75R12D_07 制造商:EXAR 制造商全稱:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET
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