XRT79L71 Datasheet, PDF (150/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

XRT79L71
REV. P1.0.3
PRELIMINARY
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1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
RXE3 CONFIGURATION AND STATUS REGISTER # 2 - G.751 (DIRECT ADDRESS = 0X1111)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RxLOF
Algo
RxLOF
RxOOF
RxLOS
RxAIS
Unused
RxFERF
R/W
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
1
1
0
0
0
0
1
BIT NUMBER
NAME
7
RxLOF Algo
6
RxLOF
5
RxOOF
4
RxLOS
TYPE
R/W
R/O
R/O
R/O
DESCRIPTION
Receive Loss of Frame Declaration/Clearance Criteria
Select:
This READ/WRITE bit-field permits the user to select the Loss of
Frame (LOF) Declaration and Clearance Criteria.
0 - LOF will be declared if the Frame Synchronizer block resides
within the OOF (Out-of-Frame) state for 24 E3 frame periods.
LOF will also be cleared once the Frame Synchronizer resides
within the "In-Frame" state for 24 E3 frame period.
1 - LOF will be declared if the Frame Synchronizer block resides
within the OOF state for 8 E3 frame periods. LOF will also be
cleared once the Frame Synchronizer block resides within the
"In-Frame" state for 8 E3 frame periods.
Receive Loss of Frame Defect Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer block is currently declaring the LOF condition.
0 - Frame Synchronizer is NOT declaring an LOF condition with
the incoming data stream.
1 - Frame Synchronizer is currently declaring an LOF condition
with the incoming data stream.
NOTE: This bit-field is not valid if the Frame Synchronizer block
is by-passed.
Receive Out of Frame Defect Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer block is currently declaring the OOF condition.
0 - Frame Synchronizer is NOT declaring an OOF condition with
the incoming data stream.
1 - Frame Synchronizer is currently declaring an OOF condition
with the incoming data stream.
NOTE: This bit-field is not valid if the Frame Synchronizer block
is by-passed.
Receive Loss of Signal Defect Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer block is currently declaring the LOS condition.
0 - Frame Synchronizer/Channel is NOT declaring an LOS con-
dition in the incoming data stream.
1 - Frame Synchronizer/Channel is currently declaring an LOS
condition in the incoming data stream.
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