參數(shù)資料
型號: XRT75L06DIB
廠商: Exar Corporation
文件頁數(shù): 18/103頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 6CH 217BGA
標準包裝: 60
類型: 線路接口裝置(LIU)
驅動器/接收器數(shù): 6/6
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 217-BBGA
供應商設備封裝: 217-BGA(23x23)
包裝: 托盤
xr
XRT75L06D
REV. 1.0.4
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
17
2.0
THE RECEIVER SECTION
The receiver is designed so that the LIU can recover clock and data from an attenuated line signal caused by
cable loss or flat loss according to industry specifications.
Once data is recovered, it is processed and
presented at the receiver outputs according to the format chosen to interface with a Framer/Mapper or ASIC.
This section describes the detailed operation of various blocks within the receive path. A simplified block
diagram of the receive path is shown in Figure 5.
FIGURE 5. RECEIVE PATH BLOCK DIAGRAM
2.1
Receive Line Interface
Physical Layer devices are AC coupled to a line interface through a 1:1 transformer. The transformer provides
isolation and a level shift by blocking the DC offset of the incoming data stream. The typical medium for the
line interface is a 75
coxial cable. Whether using E3, DS-3 or STS-1, the LIU requires the same bill of
materials, see Figure 6.
FIGURE 6. RECEIVE LINE INTERFACECONNECTION
Channel n
HDB3/
B3ZS
Decoder
MUX
AGC/
Equalizer
Peak Detector
LOS
Detector
Slicer
Jitter
Attenuator
Clock & Data
Recovery
RxClk_n
RxPOS_n
RxNEG/LCV_n
RLOS_n
RTIP_n
RRing_n
DS-3/E3/STS-1
1:1
Receiver
75
RLOS_n
RTIP_n
RRing_n
37.5
0.01
F
37.5
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