Datasheet

DS26502 T1/E1/J1/64KCC BITS Element
27 of 125
6.3 Line Build-Out
Table 6-3. E1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION
N
(NOTE 1)
RETURN
LOSS
Rt
(NOTE 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 (Note 2) 1:2 21dB 6.2Ω
1 0 1 120Ω with high return loss (Note 2) 1:2 21dB 11.6Ω
1 1 0 Reserved — — —
1 1 1 Reserved — — —
Table 6-4. T1 Line Build-Out
L2
PIN 13
L1
PIN 12
L0
PIN 11
APPLICATION
N
(NOTE 1)
RETURN
LOSS
Rt
(NOTE 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 — — —
Note 1: Transformer turns ratio.
Note 2: TTD pin must be connected high in this mode.
N.M. = not meaningful
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 64kHz + 8kHz Synchronization Interface
1 0 1 0 64kHz + 8kHz + 400Hz Synchronization Interface
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