
DS26504 T1/E1/J1/64KCC BITS Element
89 of 129
Register Name:
LIC4
Register Description:
Line Interface Control 4
Register Address:
33h
Bit #
7
6
5
4
3
2
1
0
Name
MPS1
MPS0
TT2
TT1
TT0
RT2
RT1
RT0
Default
0
HW
Mode
MPS1
PIN 16
MPS0
PIN 15
—
Bits 0 to 2: Receive Termination Select (RT0 to RT2)
RT2
RT1
RT0
EX133
(LIC3.5)
EXTERNAL
RESISTOR VALUE
RECEIVE TERMINATION
0
X
—
External Resistor Value
0
1
0
120
Ω
75
Ω
0
1
133
Ω
75
Ω
0
1
0
120
Ω
100
Ω
0
1
0
1
133
Ω
100
Ω
0
1
0
120
Ω
120
Ω (External Resistor Value)
0
1
133
Ω
120
Ω
1
0
120
Ω
110
Ω
1
0
1
133
Ω
110
Ω
1
0
1
133
Ω
133
Ω (External Resistor Value)
1
0
X
—
External Resistor Value
1
X
—
External Resistor Value
Note: A fixed 133
Ω external resistor allows the internal termination to create all other termination values. A fixed
120
Ω external resistor allows the internal termination to create all other termination values except 133Ω.
Bits 3, 4, 5: Transmit Termination Select (TT0 to TT2)
TT2
TT1
TT0
INTERNAL TRANSMIT
TERMINATION CONFIGURATION
0
Termination Disabled
0
1
75 Enabled
0
1
0
100 Enabled
0
1
120 Enabled
1
0
110 Enabled
1
0
1
133
Ω Enabled
1
0
Disabled
1
Disabled
Bits 6 and 7: MCLK Prescaler (MPS0 and MPS1) (T1 Mode)
MCLK
(MHz)
MPS1
MPS0
JACKS0
(LIC2.3)
JACKS1
(LIC2.7)
1.544
0
3.088
0
1
0
6.176
1
0
12.352
1
0
12.80
0
1
2.048
0
1
0
4.096
0
1
0
8.192
1
0
1
0
16.384
1
0