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| 型号： | XRT5997ES |
| 厂商： | Exar Corporation |
| 文件页数： | 20/37页 |
| 文件大小： | 0K |
| 描述： | IC LIU E1 7CH 3.3V 100TQFP |
| 标准包装： | 1 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 7/7 |
| 规程： | E1 |
| 电源电压： | 3.14 V ~ 3.47 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-LQFP |
| 供应商设备封装： | 100-TQFP（14x14） |
| 包装： | 托盘 |
| 其它名称： | 1016-1438 |
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XRT5997
27
Rev. 1.0.0
Capacitive-Coupling the Receiver to the Line
Figure 9, presents a recommended approach that the
user to employ when capacitive-coupling the Receive
Section to the line.
U1
XRT5997
RTIP_1
7
RRing_1
8
RxPOS_1
1
RxNEG_1
2
RxLOS_1
100
C1
0.1uF
1
2
C2
0.1uF
1
2
R2
37.4
1
2
R1
37.4
1
2
J1
BNC
1
2
RxPOS_1
RxNEG_1
Loss of Signal - 1
Figure 9. Recommended Schematic for Interfacing the Receive Sections of the XRT5997 Device to
the Line for 75
Applications (Capacitive-Coupling)
2.2 The “Receive Equalizer” Bock
After a given Channel (within the XRT5997 device) has
received the incoming line signal, via the RTIP_x and
RRing_x input pins, the first block that this signal will
pass through is the Receive Equalizer block.
As the line signal is transmitted from a given “Transmit-
ting” terminal, the pulse shapes (at that location) are
basically “square”. Hence, these pulses consist of a
combination of “low” and “high” frequency Fourier
components.
As this line signal travels from the
“transmitting terminal” (via the coaxial cable or twisted
pair) to the receiving terminal, it will be subjected to
“frequency-dependent” loss. In other words, the higher
frequency components of the signal will be subjected
to a greater amount of attenuation than the lower
frequency components. If this line signal travels over
reasonably long cable lengths, then the shape of the
pulses (which were originally square) will be distorted
and with inter-symbol interference increases.
The purpose of this block is to equalize the incoming
distorted signal, due to cable loss. In essence, the
Receive Equalizer block accomplishes this by subject-
ing the received line signal to “frequency-dependent”
amplification (which attempts to counter the fre-
quency-dependent loss that the line signal has experi-
enced).
By doing this, the Receive Equalizer is
attempting to restore the shape of the line signal so that
the received data can be recovered reliably.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT5997IV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM Transceiver |
| XRT5997IV-F | 功能描述:外围驱动器与原件 - PCI 3.3V or 5V 7-ch E1 temp -45 to 85C 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 |
| XRT5997IVTR-F | 功能描述:外围驱动器与原件 - PCI 7 Ch. E1 LIU 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 |
| XRT59L81IG-F | 功能描述:时钟发生器及支持产品 BITS Clock Generator RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| XRT59L81IGTR-F | 功能描述:时钟发生器及支持产品 BITS Clock Generator RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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