参数资料
型号: XRT73LC04AIV-F
厂商: Exar Corporation
文件页数: 26/64页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 4CH 144LQFP
标准包装: 60
类型: 线路接口装置(LIU)
驱动器/接收器数: 4/4
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: 144-LQFP
供应商设备封装: 144-LQFP(20x20)
包装: 托盘
XRT73LC04A
28
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.2
2.0
THE TRANSMIT SECTION
Figure 13 indicates that the Transmit Section within
each Channel of the XRT73LC04A consists of the fol-
lowing blocks:
Transmit Logic Block
TxClk_(n) Duty Cycle Adjust Block
HDB3/(B3ZS) Encoder
Pulse Shaping Block
The purpose of the Transmit Section is to take TTL/
CMOS level data from the terminal equipment and
encode it into a format such that it can:
1. Be efficiently transmitted over coaxial cable at
E3, DS3, or STS-1 data rates.
2. Be reliably received by the Remote Terminal
Equipment at the other end of the E3, DS3, or
STS-1 data link.
3. Comply with the applicable pulse template
requirements.
2.1
THE TRANSMIT LOGIC BLOCK
The purpose of the Transmit Logic Block is to accept
either Dual-Rail or Single-Rail (e.g., a binary data
stream) TTL/CMOS level data and timing information
from the Terminal Equipment.
2.1.1
Accepting Dual-Rail Data from the Termi-
nal Equipment
Whenever the XRT73LC04A accepts Dual-Rail data
from the Terminal Equipment, it does so via the fol-
lowing input signals:
TPData_(n)
TNData_(n)
TxClk_(n)
Figure 14 illustrates the typical interface for the trans-
mission of data in a Dual-Rail Format between the
Terminal Equipment and the Transmit Section of the
XRT73LC04A.
The manner that the LIU handles Dual-Rail data is
described below and illustrated in Figure 15. The
Transmit Section (of a Channel) typically samples the
data on the TPData_(n) and TNData_(n) input pins
on the falling edge of TxClk_(n).
FIGURE 14. THE TYPICAL INTERFACE FOR THE TRANSMISSION OF DATA IN A DUAL-RAIL FOR-
MAT FROM THE
TRANSMITTING TERMINAL EQUIPMENT TO THE TRANSMIT SECTION OF A CHANNEL
Terminal
Equipment
(E3/DS3 or STS-1
Framer)
Exar E3/DS3/STS-1 LIU
Transmit
Logic
Block
TxPOS
TxNEG
TxLineClk
TPData
TNData
TxClk
FIGURE 15. THE XRT73LC04A SAMPLES THE DATA ON THE TPDATA AND TNDATA INPUT PINS
TxClk
TPData
TNData
Data
1
0
相关PDF资料
PDF描述
XRT73R06IB-F IC LIU E3/DS3/STS-1 6CH 217BGA
XRT73R12IB-L IC LIU E3/DS3/STS-1 12CH 420TBGA
XRT75L00DIV-F IC LIU E3/DS3/STS-1 SGL 52TQFP
XRT75L00IV-F IC LIU E3/DS3/STS-1 SGL 52TQFP
XRT75L02DIV-F IC LIU E3/DS3/STS-1 2CH 100TQFP
相关代理商/技术参数
参数描述
XRT73R06 制造商:EXAR 制造商全称:EXAR 功能描述:SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73R06ES 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
XRT73R06IB 功能描述:外围驱动器与原件 - PCI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray
XRT73R06IB-F 功能描述:外围驱动器与原件 - PCI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray
XRT73R12 制造商:EXAR 制造商全称:EXAR 功能描述:TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT