ds26504 Maxim Integrated Products, Inc., ds26504 Datasheet - Page 88

• 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
Bits 0 to 2: Receive Termination Select (RT0 to RT2)
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.
Bits 3, 4, 5: Transmit Termination Select (TT0 to TT2)
Bits 6 and 7: MCLK Prescaler (MPS0 and MPS1) (T1 Mode)
RT2
TT2
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
1
1
1
1
MCLK
(MHz)
12.352
16.384
1.544
3.088
6.176
12.80
2.048
4.096
8.192
TT1
PIN 16
RT1
MPS1
MPS1
0
0
1
1
0
0
1
1
0
0
0
1
1
1
1
0
0
0
1
1
7
0
MPS1
TT0
0
0
1
1
0
0
0
1
1
0
1
0
1
0
1
0
1
RT0
PIN 15
MPS0
MPS0
0
1
1
0
0
1
1
0
0
1
0
1
LIC4
Line Interface Control 4
33h
6
0
Termination Disabled
75Ω Enabled
100Ω Enabled
120Ω Enabled
110Ω Enabled
133Ω Enabled
Disabled
Disabled
TERMINATION CONFIGURATION
MPS0
(LIC3.5)
EX133
0
1
0
1
0
0
1
0
1
X
X
X
0
1
0
1
0
1
0
1
1
TT2
INTERNAL TRANSMIT
—
5
0
RESISTOR VALUE
JACKS0
(LIC2.3)
EXTERNAL
TT1
—
0
0
0
0
1
1
1
1
1
4
0
120Ω
133Ω
120Ω
133Ω
120Ω
133Ω
120Ω
133Ω
133Ω
—
—
—
88 of 128
TT0
—
3
0
JACKS1
(LIC2.7)
External Resistor Value
75Ω
75Ω
100Ω
100Ω
120Ω (External Resistor Value)
120Ω
110Ω
110Ω
133Ω (External Resistor Value)
External Resistor Value
External Resistor Value
0
0
0
0
1
0
0
0
0
RECEIVE TERMINATION
RT2
—
2
0
RT1
—
1
0
RT0
—
0
0