参数资料
型号: XRT73LC03AIV
厂商: Exar Corporation
文件页数: 12/61页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 3CH 120LQFP
标准包装: 72
类型: 线路接口装置(LIU)
驱动器/接收器数: 3/3
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 120-LQFP
供应商设备封装: 120-LQFP(14x20)
包装: 托盘
XRT73LC03A
2
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.4
TYPICAL APPLICATIONS
TRANSMIT INTERFACE CHARACTERISTICS:
Accepts either Single-Rail or Dual-Rail data from
Terminal Equipment and generates a bipolar signal
from the line
Integrated Pulse Shaping Circuit
Built-in B3ZS/HDB3 Encoder (which can be dis-
abled)
Contains Transmit Clock Duty Cycle Correction
Circuit on-chip
Generates pulses that comply with the ITU-T G.703
pulse template (E3 applications)
Generates pulses that comply with the DSX-3 pulse
template as specified in Bellcore GR-499-CORE
and ANSI T1.102_1993
Generates pulses that comply with the STSX-1
pulse template as specified in Bellcore GR-253-
CORE
Transmitter can be turned off in order to support
redundancy designs
RECEIVE INTERFACE CHARACTERISTICS:
Integrated Adaptive Receive Equalization (optional)
and Timing Recovery
Declares and Clears the LOS defect per ITU-T
G.775 requirements (E3 and DS3 applications)
Meets Jitter Tolerance Requirements as specified
in ITU-T G.823_1993 (E3 Applications)
Meets Jitter Tolerance Requirements as specified
in Bellcore GR-499-CORE (DS3 Applications)
Declares Loss of Signal (LOS) and Loss of Lock
(LOL) Alarms
Built-in B3ZS/HDB3 Decoder (which can be dis-
abled)
Recovered Data can be muted while the LOS Con-
dition is declared
Outputs either Single-Rail or Dual-Rail data to the
Terminal Equipment
Receiver can be powered down in order to con-
serve power in redundancy designs
FIGURE 2. MULTICHANNEL ATM APPLICATION
ATM
Switch/
SAR
XRT74L73
RPOS
RNEG
RxLineClk
XRT71D03
XRT73LC03
RRPOS
RRNEG
RRClk
RPOS
RNEG
RxClk
RPOS
RNEG
RxClk
RTIP
RRing
TTIP
TRing
TPOS
TNEG
TxLineClk
MClk
TPOS
TNEG
TxClk
3 Channel E3/DS3 ATM UNI
3 Channel E3/DS3 J/A
3 Channel E3/DS3 LIU
FIGURE 3. MULTISERVICE - FRAME RELAY APPLICATION
Frame
Relay
XRT72L56
RPOS
RNEG
RxLineClk
XRT71D03
XRT73LC03
RRPOS
RRNEG
RRClk
RPOS
RNEG
RxClk
RPOS
RNEG
RxClk
RTIP
RRing
TTIP
TRing
TPOS
TNEG
TxLineClk
MClk
TPOS
TNEG
TxClk
6 Channel E3/DS3 Framer
2 x 3 Channel E3/DS3 J/A
2 x 3 Channel E3/DS3 LIU
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