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PEB2256HT Datasheet(PDF) 352 Page - Infineon Technologies AG

Part # PEB2256HT
Description  E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications
PDF  490 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

PEB2256HT Datasheet(HTML) 352 Page - Infineon Technologies AG

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FALC56 V1.2
PEB 2256
T1/J1 Registers
Data Sheet
352
2002-08-27
Framer Mode Register 4 (Read/Write)
Value after reset: 00
H
AIS3
Select AIS Condition
0 =
AIS (blue alarm) is indicated (FRS0.AIS) when two or less zeros
in the received bit stream are detected in a time interval of 12
frames (F4, F12, F72) or 24 frames (ESF).
1 =
AIS (blue alarm) detection is only enabled when FALC56 is in
asynchronous state. The alarm is indicated (FRS0.AIS) when
– three or less zeros within a time interval of 12 frames (F4,
F12, F72), or
– five or less zeros within a time interval of 24 frames (ESF)
are detected in the received bit stream.
TM
Transparent Mode
Setting this bit enables the transparent mode:
In transmit direction bit 8 of every FS/DL time slot from the system
internal highway (XDI) is inserted in the F-bit position of the outgoing
frame. Internal framing generation, insertion of CRC and DL data is
disabled.
XRA
Transmit Remote Alarm (Yellow Alarm)
If high, remote alarm is sent on the PCM route. Clearing the bit
removes the remote alarm pattern. Remote alarm indication depends
on the multiframe structure as follows:
F4:
Bit2 = 0 in every speech channel
F12: – FMR0.SRAF = 0: bit2 = 0 in every speech channel
– FMR0.SRAF = 1: FS-bit of frame 12 is forced to “1”
ESF: – FMR0.SRAF = 0: pattern
“1111111100000000 11111111000”
in data link channel
– FMR0.SRAF = 1: bit2 = 0 in every speech channel
F72: Bit2 = 0 in every speech channel
70
FMR4
AIS3
TM
XRA
SSC1
SSC0
AUTO
FM1
FM0
(20)



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