Line build-out, Receiver operating modes, Uild – Rainbow Electronics DS26503 User Manual
Page 27: Eceiver, Perating, Odes, Table 6-3. e1 line build-out, Table 6-4. t1 line build-out, Table 6-5. receive path operating mode, 3 line build-out table 6-3. e1 line build-out
DS26503 T1/E1/J1 BITS Element
27 of 123
6.3 Line Build-Out
Table 6-3. E1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION
N (1)
RETURN LOSS
Rt (1)
0 0 0
75Ω normal
1:2
N.M.
0
0 0 1
120Ω normal
1:2
N.M.
0
1 0 0
75Ω with high return loss*
1:2
21dB
6.2Ω
1 0 1
120Ω with high return loss*
1:2
21dB
11.6Ω
1 1 0
Reserved
—
—
—
1 1 1
Reserved
—
—
—
*TTD pin must be connected high in this mode.
N.M. = not meaningful
Table 6-4. T1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION N
(1)
RETURN
LOSS
Rt (1)
0
0
0
DSX-1 (0 to 133 feet)/0dB CSU
1:2
N.M.
0
0
0
1
DSX-1 (133 to 266 feet)
1:2
N.M.
0
0
1
0
DSX-1 (266 to 399 feet)
1:2
N.M.
0
0
1
1
DSX-1 (399 to 533 feet)
1:2
N.M.
0
1
0
0
DSX-1 (533 to 655 feet)
1:2
N.M.
0
1 0 1
Reserved
— —
—
1 1 0
Reserved
— —
—
1 1 1
Reserved
— —
—
6.4 Receiver Operating Modes
Table 6-5. Receive Path Operating Mode
RMODE3
PIN 64
RMODE2
PIN 61
RMODE1
PIN 4
RMODE0
PIN 3
RECEIVE PATH OPERATING MODE
0 0 0 0
T1
D4
0 0 0 1
T1
ESF
0 0 1 0
J1
D4
0 0 1 1
J1
ESF
0 1 0 0
E1
FAS
0 1 0 1
E1
CAS
0 1 1 0
E1
CRC4
0
1
1
1
E1 CAS and CRC4
1
0
0
0
E1 G.703 2048kHz Synchronization Interface
1 0 0 1
Reserved
1 0 1 0
Reserved
1 0 1 1
6312kHz
Synchronization
Interface
1 1 0 0
Reserved
1 1 0 1
Reserved
1 1 1 0
Reserved
1 1 1 1
Reserved