ds26518 Maxim Integrated Products, Inc., ds26518 Datasheet - Page 235

• Manufacturer Part Number: ds26518
• Description: 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 2 to 0: Receive Impedance Selection (RIMPM[2:0]). These bits are used to select the receive impedance
termination. They must be set according to the cable impedance even if internal termination resistance is disabled
(RIMPON = 0). See
Table 10-19. Receive Impedance Selection
Bit 6: Receive Internal Impedance Match On (RIMPON)
RIMPON
0
0
0
0
1
1
1
1
1
1
1
1
0 =
1 =
Receive internal impedance termination is disabled (high impedance).
Receive internal impedance termination is enabled.
—
7
0
RIMPRM[2:0]
Table
000
001
010
011
100
101
110
111
x00
x01
x10
x11
LRISMR
LIU Receive Impedance and Sensitivity Monitor Register
1007h + (20h x (n - 1)) : where n = 1 to 8
10-19.
RIMPON
6
0
100: external termination (no internal impedance match)
110: external termination (no internal impedance match)
120: external termination (no internal impedance match)
75: external termination (no internal impedance match)
—
5
0
RECEIVE IMPEDANCE SELECTED (:)
235 of 286
100:, with external 120: resistor
110:, with external 120: resistor
120:, with external 120: resistor
75:, with external 120: resistor
—
4
0
100: internal termination
110: internal termination
120: internal termination
75: internal termination
—
3
0
DS26518 8-Port T1/E1/J1 Transceiver
RIMPM2
2
0
RIMPM1
1
0
RIMPM0
0
0