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XRT83SL314 Datasheet(PDF) 41 Page - Exar Corporation

Part # XRT83SL314
Description  14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
PDF  83 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT83SL314 Datasheet(HTML) 41 Page - Exar Corporation

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XRT83SL314
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
38
4.5.1
ATAOS (Automatic Transmit All Ones)
If ATAOS is selected by programming the appropriate global register, an AMI all ones signal will be transmitted
for each channel that experiences an RLOS condition. If RLOS does not occur, the ATAOS will remain inactive
until an RLOS on a given channel occurs. A simplified block diagram of the ATAOS function is shown in
Figure 33.
FIGURE 33. SIMPLIFIED BLOCK DIAGRAM OF THE ATAOS FUNCTION
4.5.2
Network Loop Up Code
By setting the LIU to generate a NLUC, the transmitters will send out a repeating "00001" pattern. The output
waveform is shown in Figure 34.
FIGURE 34. NETWORK LOOP UP CODE GENERATION
4.5.3
Network Loop Down Code
By setting the LIU to generate a NLDC, the transmitters will send out a repeating "001" pattern. The output
waveform is shown in Figure 35.
FIGURE 35. NETWORK LOOP DOWN CODE GENERATION
RLOS
ATAOS
TAOS
TTIP
TRING
Tx
Network
Loop-Up
Code
1
1
0
0
0
0
0
000
1
Network
Loop-Down
Code
11
1
1
0
00
0
0
00



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