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| 型号： | XRT5997ES |
| 厂商： | Exar Corporation |
| 文件页数： | 22/37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
29
Rev. 1.0.0
A ctual O ccurrence
of LO S C o ndition
Line S igna l
is R e stored
T im e R ang e fo r
LO S D e cla ratio n
T im e R ang e fo r
LO S C learance
G .775 C o m p liance
0 U I
10 U I
0 U I
10 U I
255 U I
255
UI
RxIN
L O S O u tp ut Pin
Note: F o r E 1 , 1 U I = 488ns
Figure 11. The Behavior of the LOS Output Indicator, in response to
the Loss of Signal, and the Restoration of the Signal
2.3 The “Receive Output Interface” block
The purpose of the “Receive Output Interface” block is
to interface directly with the “Receiving Terminal Equip-
ment”. The “Receive Output Interface” block outputs
the data (which has been recovered from the incoming
line signal) to the “Receive Terminal Equipment” via the
“RxPOS_x and RxNEG_x output pins.
If the “Receive Sections” of the XRT5997 device has
received a “Positive-Polarity” pulse, via the RTIP_x
and RRing_x input pins, then the Receive Output
Interface will output a pulse via the “RxPOS_x” output
pins.
Similarly, if the “Receive Sections” of the XRT5997
device has received a “Negative-Polarity” pulse, via the
RTIP_x and RRing_x input pins, then the Receive
Output Interface will output a pulse via the “RxNEG_x”
output pins.
Note:
The “Receive Output Interface” block does not
supply a recovered clock. This device is intended to be
used in those applications, where the “Clock Recovery”
circuit is realized in an ASIC solution.
3.0 Shutting off the Transmitter
Each channel (within the XRT5997 device) permits the
user to shut off the “Transmit Driver” within their
respective “Transmit Section”. This feature can come
in handy for system redundancy design considerations
or during diagnostic testing. The user can activate this
feature by either of the following ways.
Method 1:
Connect the Transmit Data input pins (e.g., TxPOS_x
and TxNEG_x) to a logic “1”; or allow them to float.
(These input pins have an internal “pull-up” resistor).
Method 2:
Connect the “TxClk_x” input pin to a logic “0” (e.g.,
GND) and continue to apply data via the TxPOS_x and
TxNEG_x input pins.
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| 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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