ds26504 Maxim Integrated Products, Inc., ds26504 Datasheet - Page 85

• Manufacturer Part Number: ds26504
• Description: Ds26504 T1/e1/j1/64kcc Bits Element
• Manufacturer: Maxim Integrated Products, Inc.

T1 Mode
N.M. = Not meaningful
Note 1: Transformer turns ratio.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
HW
Mode
Bits 0 to 5: Gain Control Bits 0 to 5 (GC0 toGC5). The GC0 through GC5 bits control the gain setting for the nonautomatic
gain mode. Use the tables below for setting the recommended values. The LBO (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 Enable (AGCE)
Bit 7: Unused, must be set = 0 for proper operation.
L2
0
0
0
0
1
1
1
1
T1, Impedance Match Off
E1, Impedance Match Off
T1, Impedance Match On
E1, Impedance Match On
NETWORK MODE
L1
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
0
0
1
1
0
0
1
1
—
7
0
0
L0
0
1
0
1
0
1
0
1
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)
Reserved
Reserved
Reserved
AGCE
TLBC
Transmit Line Build-Out Control
34h
6
0
0
APPLICATION
LBO
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
4
5
0
1
GC5
5
0
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
0
GC4
0
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
0
0
0
0
1
1
85 of 128
N (Note 1)
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
0
1:2
1:2
1:2
1:2
1:2
—
—
—
GC2
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
0
RETURN LOSS
GC1
1
1
1
0
1
1
1
1
1
0
0
1
1
0
0
1
0
0
1
0
1
1
N.M.
N.M.
N.M.
N.M.
N.M.
GC1
—
—
—
1
0
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
0
Rt (Note 1)
—
—
—
0
0
0
0
0