DS21458LDK Maxim Integrated, DS21458LDK Datasheet - Page 166
DS21458LDK
Manufacturer Part Number
DS21458LDK
Description
Network Controller & Processor ICs
Manufacturer
Maxim Integrated
Datasheet
1.DS21458LDK.pdf
(269 pages)
- Current page: 166 of 269
- Download datasheet (2Mb)
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0–5/Gain Control Bits 0–5 (GC0–GC5). The GC0 through GC5 bits control the gain setting automatic gain control is
disabled. Use the tables below for setting the recommended values. The LB (line build-out) column refers to the value in the
L0–L2 bits in LIC1 (Line Interface Control 1) register.
Bit 6/Automatic Gain Control Disable (AGCD).
Bit 7/Unused, must be set to zero for proper operation.
T1, Impedance Match Off
E1, Impedance Match Off
T1, Impedance Match On
E1, Impedance Match On
NETWORK MODE
0 = use Transmit AGC, TLBC bits 0–5 are “don’t care”
1 = do not use Transmit AGC, TLBC bits 0–5 set nominal level
—
7
0
AGCD
TLBC
Transmit Line Build-Out Control
7Dh
6
0
LB
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
4
5
1
2
GC5
5
0
GC5
1
0
0
1
1
1
0
1
0
0
0
0
1
1
0
1
1
1
1
1
0
0
GC4
4
0
GC4
0
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
0
0
0
0
1
1
166 of 269
GC3
GC3
0
1
1
0
0
0
0
1
1
0
0
1
0
0
1
1
0
0
1
1
1
1
3
0
GC2
DS21455/DS21458 Quad T1/E1/J1 Transceivers
1
0
0
0
1
1
0
1
1
1
1
0
0
0
1
1
0
0
0
0
0
0
GC2
2
0
GC1
1
1
1
0
1
1
1
1
1
0
0
1
1
0
0
1
0
0
1
0
1
1
GC1
1
0
GC0
0
1
0
0
1
1
1
1
0
1
1
0
0
0
0
1
1
1
0
0
0
0
GC0
0
0
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