XRT83SL314IB View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SL314IB' PDF : 83 Pages View PDF
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14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL314
REV. 1.0.1
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
TAOS
TTIP
Tx
TRING
ATAOS
RLOS
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
Network
Loop-Up
Code
1
0
0
0
0
1
0
0
0
0
1
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
Network
Loop-Down
Code
10010010010
38
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