peb2255 Infineon Technologies Corporation, peb2255 Datasheet - Page 311
peb2255
Manufacturer Part Number
peb2255
Description
E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB2255.pdf
(374 pages)
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AIS…
LFA…
RRA…
LMFA…
FSRF…
Data Sheet
Alarm Indication Signal (Blue Alarm)
This bit is set when the conditions defined by bit FMR4.AIS3 are
detected. The flag stays active for at least one multiframe.
With the rising edge of this bit an interrupt status bit (ISR2.AIS) is set.
It is reset with the beginning of the next following multiframe if no
alarm condition is detected.
The bit is set during alarm simulation and reset if FRS2.ESC = 0, 3,
4, 7 and no alarm condition exists.
Loss of Frame Alignment
The flag is set if pulseframe synchronization has been lost. The
conditions are specified via bit FMR4.SSC1/0. Setting this bit causes
an interrupt (ISR2.LFA).
The flag is cleared when synchronization has been regained.
Additionally interrupt status ISR2.FAR is set with clearing this bit.
The flag is set after detecting remote alarm (yellow alarm). Conditions
for setting/resetting are defined by bit RC0.RRAM.
With the rising edge of this bit an interrupt status bit ISR2.RA is set.
With the falling edge of this bit an interrupt status bit ISR2.RAR is set.
The bit is set during alarm simulation and reset if FRS2.ESC = 0, 3,
4,5,7 and no alarm condition exists.
Loss of Multiframe Alignment
Set in F12 or F72 format when 2 out of 4-(or 5 or 6) multiframe
alignment patterns are incorrect or if LFA (loss of basic frame
alignment) is detected.
Additionally the interrupt status bit ISR2.LMFA is set.
Cleared after multiframe synchronization has been regained. With the
falling edge of this bit an interrupt status bit ISR2.MFAR is generated.
Toggles when no framing candidate (pulse framing or multiframing) is
found and a new frame search is started.
Receive Remote Alarm (Yellow Alarm)
Frame Search Restart Flag
311
FALC-LH V1.3
T1/J1 Registers
PEB 2255
2000-07
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