DS21458LDK Maxim Integrated, DS21458LDK Datasheet - Page 165

• Manufacturer Part Number: DS21458LDK
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated

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