XRT86SH221_08 Datasheet, PDF (244/357 Pages) Exar Corporation – SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU

XRT86SH221
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
REV. 1.0.1
BIT7
RxLOF_state
RO
0
TABLE 216: ALARM AND ERROR STATUS REGISTER (AESR 0XNB02H)
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
Reserved
LOS
BPV
RxLOF
Reserved
RO
RO
RO
RO
RUR/WC
RUR/WC
RUR/WC
0
0
0
0
0
0
0
BIT 7 - LOF Alarm State
This bit is used to indicate that a loss of frame alignment has occurred.
0 - No red alarm occurs.
1 - Red alarm occurs.
BIT [6:5] - Reserved
BIT 4 - LOS State Change
This bits indicates the change of LOS defect (DEFDET=1).
0 - No state change of Loss of Signal.
1 - The state of Loss of Signal alarm has changed.
BIT 3 - BPV State Change
This bits indicates the change of BPV defect (DEFDET=1).
0 - No state change of Bi-Polar Violation alarm is recorded.
1 - The state of Bi-Polar Violation alarm has changed.
BIT 2 - LOF State Change
This bits indicates the change of LOF defect (DEFDET=1) or Red alarm (DEFDET=0) state.
0 - No state change of Red alarm is recorded.
1 - The state of Red alarm has changed.
BIT [1:0] - Reserved
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