Datasheet

DS21455/DS21458 Quad T1/E1/J1 Transceivers
165 of 269
Table 25-2. E1 Mode With Automatic Gain Control Mode Enabled (TLBC.6 = 0)
APPLICATION
LIC1.7
(L2)
LIC1.6
(L1)
LIC1.5
(L0)
PSA1
(F1h)
PSA2
(F2h)
RETURN
LOSS
Rt (1)
75 Normal
0 0 0 20h 08h N.M.** 0
120 Normal
0 0 1 20h 00h N.M. 0
75 with High Return Loss*
1 0 0 00h 00h 21dB 6.2Ω
120 with High Return Loss*
1 0 1 20h 00h 21dB 11.6Ω
Table 25-3. E1 Mode With Automatic Gain Control Mode Disabled (TLBC.6 = 1)
APPLICATION
LIC1.7
(L2)
LIC1.6
(L1)
LIC1.5
(L0)
PSA1
(F1h)
PSA2
(F2h)
RETURN
LOSS
Rt (1)
75 Normal
0 0 0 20h
08h
N.M. 0
120 Normal
0 0 1 00h
00h
N.M. 0
75 with High Return Loss*
1 0 0 00h
00h
21dB 6.2Ω
120 with High Return Loss*
1 0 1 00h
00h
21dB 11.6Ω
Table 25-4. T1 Mode With Automatic Gain Control Mode Enabled (TLBC.6 = 0)
APPLICATION
LIC1.7
(L2)
LIC1.6
(L1)
LIC1.5
(L0)
PSA1
(F1h)
PSA2
(F2h)
RETURN
LOSS
Rt (1)
0dB CSU 0 0 0 00h 00h N.M. 0
DSX-1 (0 to 133 feet)/0dB CSU 0 0 0 00h 00h N.M. 0
DSX-1 (133 to 266 feet) 0 0 1 0Ah 00h N.M. 0
DSX-1 (266 to 399 feet) 0 1 0 0Ah 00h N.M. 0
DSX-1 (399 to 533 feet) 0 1 1 00h 00h N.M. 0
DSX-1 (533 to 655 feet) 1 0 0 0Ah 00h N.M. 0
-7.5dB CSU 1 0 1 00h 00h N.M. 0
-15dB CSU 1 1 0 00h 00h N.M. 0
-22.5dB CSU 1 1 1 00h 00h N.M. 0
Table 25-5. T1 Mode With Automatic Gain Control Mode Disabled (TLBC.6 = 1)
APPLICATION
LIC1.7
(L2)
LIC1.6
(L1)
LIC1.5
(L0)
PSA1
(F1h)
PSA2
(F2h)
RETURN
LOSS
Rt (1)
0dB CSU 0 0 0 00h 00h N.M. 0
DSX-1 (0 to 133 feet)/0dB CSU 0 0 0 00h 00h N.M. 0
DSX-1 (133 to 266 feet) 0 0 1 00h 00h N.M. 0
DSX-1 (266 to 399 feet) 0 1 0 00h 00h N.M. 0
DSX-1 (399 to 533 feet) 0 1 1 00h 00h N.M. 0
DSX-1 (533 to 655 feet) 1 0 0 00h 00h N.M. 0
-7.5dB CSU 1 0 1 00h 00h N.M. 0
-15dB CSU 1 1 0 00h 00h N.M. 0
-22.5dB CSU 1 1 1 00h 00h N.M. 0
*TT0 and TT1 of the LIC4 register must be set to zero in this configuration.
**N.M. = not meaningful.