DS26504 T1/E1/J1/64KCC BITS Element
6.3 Line Build-Out
Table 6-3. E1 Line Build-Out
L2
PIN 13
0
0
1
1
1
1
L1
PIN 12
0
0
0
0
1
1
L0
PIN 11
0
1
0
1
0
1
APPLICATION
75鈩?normal
120鈩?normal
75鈩?with high return loss (Note 2)
120鈩?with high return loss (Note 2)
75W normal + enable transmit and receive
gapped clock
120W normal + enable transmit and receive
gapped clock
N
(Note 1)
1:2
1:2
1:2
1:2
1:2
1:2
RETURN
LOSS
N.M.
N.M.
21dB
21dB
N.M
N.M
Rt
(Note 1)
0
0
6.2鈩?/div>
11.6鈩?/div>
0
0
Table 6-4. T1 Line Build-Out
L2
PIN 13
0
0
0
0
1
1
1
1
L1
PIN 12
0
0
1
1
0
0
1
1
L0
PIN 11
0
1
0
1
0
1
0
1
APPLICATION
DSX-1 (0 to 133 feet)/0dB CSU
DSX-1 (133 to 266 feet)
DSX-1 (266 to 399 feet)
DSX-1 (399 to 533 feet)
DSX-1 (533 to 655 feet)
Reserved
Reserved
DSX-1 (0 to 133ft)/0dB CSU + enable
transmit and receive gapped clock
N
(Note 1)
1:2
1:2
1:2
1:2
1:2
鈥?/div>
鈥?/div>
1:2
RETURN
LOSS
N.M.
N.M.
N.M.
N.M.
N.M.
鈥?/div>
鈥?/div>
N.M.
Rt
(Note 1)
0
0
0
0
0
鈥?/div>
鈥?/div>
0
N.M. = not meaningful
Note 1:
Transformer turns ratio.
Note 2:
TTD pin must be connected high in this mode.
26 of 128
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