ds26504 Maxim Integrated Products, Inc., ds26504 Datasheet - Page 87

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

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
HW
Mode
Bit 0: Transmit Alternate Ones and Zeros (TAOZ). Transmit a …101010… pattern at TTIP and TRING.
Bits 1 and 2: Unused, must be set = 0 for proper operation.
Bits 3 and 4: Monitor Mode (MM0 and MM1). Note: This function is only available in T1 or E1 mode.
Bit 5: Eternal 133Ω Resistor Select (EX133). This bit is used to indicate to the device’s internal receive termination control
circuitry that either a 120Ω or 133Ω external resistor is used. Used in conjunction with the RT0, RT1, and RT2 bits in the
LIC4 register. Note: A fixed 133Ω external resistor allows the internal termination to create all other termination values.
A fixed 120Ω external resistor allows the internal termination to create all other termination values except 133Ω.
Bit 6: CMI Invert (CMII)
Bit 7: CMI Enable (CMIE)
MM1
0
0
1
1
0 = disabled
1 = enabled
0 = indicates a 120Ω external resistor is connected
1 = indicates a 133Ω external resistor is connected
0 = CMI normal at TTIP and RTIP
1 = invert CMI signal at TTIP and RTIP
0 = disable CMI mode
1 = enable CMI mode
MM0
CMIE
0
1
0
1
7
0
0
INTERNAL LINEAR GAIN BOOST (dB)
CMII
LIC3
Line Interface Control 3
32h
6
0
0
Normal operation (no boost)
EX133
5
0
0
20
26
32
MM1
4
0
0
87 of 128
MM0
3
0
0
—
2
0
0
—
1
0
0
TAOZ
0
0
0