pef22504 Infineon Technologies Corporation, pef22504 Datasheet - Page 136

• Manufacturer Part Number: pef22504
• Description: Quad E1/t1/j1 Line Interface Component For Long- And Short-haul Applications Pef 22504 E, Pef 22504 Ht, Version 2.1
• Manufacturer: Infineon Technologies Corporation

Mode Register 3
Only valid in E1 mode.
MR3
Mode Register 3
Field
XLD
XLU
CMI
Data Sheet
Bits
5
4
3
Type
rw
rw
rw
Description
Transmit LLB Down Code, E1 only
This bit is not valid in T1/J1 mode. In T1/J1 mode the bis MR5.XLD is
used instead.
0
1
Transmit LLB UP Code, E1 only
This bit is not valid in T1/J1 mode. In T1/J1 mode the bit MR5.XLU is used
instead.
0
1
Select CMI Precoding, E1 only
This bit is not valid in T1/J1 mode. In T1/J1 mode the similar bit for B8ZS
precoding is DIC3.CMI.
In E1 mode only valid if CMI code (MR0.XC(1:0) = ´01
bit defines the CMI precoding and influences transmit and receive data.
Note: Before local loop is selected, HDB3 precoding has to be disabled.
0
1
B
B
B
B
B
B
transmit data with the LLB down (deactivate) Code continuously
until this bit is reset. The LLB down Code is optionally overwritten
by the time slot 0 depending on bit LCR1.FLLB.
transmit data with the LLB UP Code continuously until this bit is
reset. The LLB UP Code is overwritten by the time slot 0 depending
on bit LCR1.FLLB. For proper operation bit MR3.XLD must be
cleared.
Normal operation.
A one in this bit position causes the transmitter to replace normal
Normal operation.
A one in this bit position causes the transmitter to replace normal
CMI with HDB3 precoding
CMI without HDB3 precoding
Offset
xx31
136
H
Register DescriptionMode Register 3
Rev. 1.3, 2006-01-25
b
´) is selected. This
QuadLIU
PEF 22504
Reset Value
00
TM
H