XRT79L71 Datasheet, PDF (164/441 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.832 (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
RxPLD
Unstab
RxTMark
RxFERF
R/W
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
1
1
0
0
1
1
1
BIT NUMBER
NAME
7
RxLOF Algo
6
RxLOF
5
RxOOF
4
RxLOS
TYPE
R/W
R/O
R/O
R/O
DESCRIPTION
Receive LOF (Loss of Frame) Declaration Algorithm:
This READ/WRITE bit-field permits the user to select a "Receive
LOF Declaration" Algorithm, as indicated below.
0 - The Frame Synchronizer will declare a Loss of Frame condi-
tion after it has resided within the "OOF" (Out of Frame) condi-
tion for 24 E3 frame periods.
1 - The Frame Synchronizer will declare a Loss of Frame condi-
tion after it has resided within the "OOF" condition for 8 E3 frame
periods.
Receive Loss of Frame Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer is currently declaring a Loss of Frame condition, as
indicated below.
0 - The Frame Synchronizer block is NOT currently declaring a
Loss of Frame condition.
1 - The Frame Synchronizer block is currently declaring a Loss of
Frame condition.
Receive Out of Frame Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer is currently declaring an Out of Frame (OOF) con-
dition, as indicated below.
0 - The Frame Synchronizer block is NOT currently declaring an
Out of Frame condition.
1 - The Frame Synchronizer block is currently declaring an Out
of Frame condition.
NOTE: The Frame Synchronizer block will declare an "OOF"
condition if it detects FA1 or FA2 byte errors in four (4)
consecutive "incoming" E3 frames.
Receive Loss of Signal Indicator:
This READ-ONLY bit-field indicates whether or not the Frame
Synchronizer block is currently declaring an LOS (Loss of Sig-
nal) condition, as indicated below.
0 - The Frame Synchronizer block is NOT currently declaring an
LOS condition.
1 - The Frame Synchronizer block is currently declaring an LOS
condition.
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