peb3456e Infineon Technologies Corporation, peb3456e Datasheet - Page 112
![no-image](/images/no-image-200.jpg)
peb3456e
Manufacturer Part Number
peb3456e
Description
Channelized T3 Termination, With Ds3 Framer, M13 Multiplexer, T1/e1 Framers And 256-channel Hdlc/ppp Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB3456E.pdf
(424 pages)
- Current page: 112 of 424
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Multiplexer
The multiplexer combines three E1 signals to form a DS2 signal. Stuffing bits are
inserted and the C
in case that not enough data is available.
4.9.2.3
Detection
The receiver optionally calculates the parity of all tributary bits and compares this value
with the received parity bit. Differences are counted in the parity error counter.
Generation
The parity bit is automatically calculated according to ITU-T G.747 or programmable to
a fixed value under microprocessor control.
4.9.2.4
Detection
Remote alarm is reported when bit 1 of set II changes and when the change persists for
at least three multiframes.
Generation
Remote alarm is transmitted in bit 2 of “set II” and can be inserted under microprocessor
control.
4.9.2.5
Detection
AIS is declared, when the AIS condition (the received DS2 data stream contains an all
‘1’ signal with less then 5/9 zeros within two consecutive multiframes while the DS2
framer is out of frame) is present within a time interval that is determined by register
D2RAP.
Generation
The alarm indication signal is an all ’1’ unframed signal and will be transmitted if enabled.
4.10
The M23 multiplexer and the DS3 framer can be operated in three modes:
Data Sheet
Parity Bit
Remote Alarm Indication
Alarm Indication Signal
M23 multiplexer and DS3 framer
j1
-, C
j2
-, C
j3
-bits, which are assigned to the j
112
th
Functional Description
E1 signal, are set to ’1’
PEB 3456 E
05.2001
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