Rainbow Electronics DS26504 - Manual (Page 87)

DS26504 T1/E1/J1/64KCC BITS Element
87 of 128
Register Name:
LIC3
Register Description: Line Interface Control 3
Register Address: 32h
Bit
# 7 6 5 4 3 2 1 0
Name CMIE CMII EX133 MM1 MM0 — — TAOZ
Default 0 0 0 0 0 0 0 0
HW
Mode
0 0 0 0 0 0 0 0
Bit 0: Transmit Alternate Ones and Zeros (TAOZ). Transmit a …101010… pattern at TTIP and TRING.
0 = disabled
1 = enabled
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.
MM1 MM0 INTERNAL LINEAR GAIN BOOST (dB)
0 0 Normal operation (no boost)
0 1 20
1 0 26
1 1 32
Bit 5: Eternal 133
W Resistor Select (EX133). This bit is used to indicate to the device’s internal receive termination control
circuitry that either a 120 W or 133W external resistor is used. Used in conjunction with the RT0, RT1, and RT2 bits in the
LIC4 register. Note: A fixed 133 W external resistor allows the internal termination to create all other termination values.
A fixed 120 W external resistor allows the internal termination to create all other termination values except 133W.
0 = indicates a 120 W external resistor is connected
1 = indicates a 133 W external resistor is connected
Bit 6: CMI Invert (CMII)
0 = CMI normal at TTIP and RTIP
1 = invert CMI signal at TTIP and RTIP
Bit 7: CMI Enable (CMIE)
0 = disable CMI mode
1 = enable CMI mode