XRT94L33_3 Datasheet, PDF (233/801 Pages) Exar Corporation – -CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER - SONET REGISTERS

Rev222...000...000
XRT94L33
333---CCCHHHAAANNNNNNEEELLL DDDSSS333///EEE333///SSSTTTSSS---111 TTTOOO SSSTTTSSS---333///SSSTTTMMM---111 MMMAAAPPPPPPEEERRR ––– SSSOOONNNEEETTT RRREEEGGGIIISSSTTTEEERRRSSS
Table 144: Receive STS-3c Path – AIS-C Status Register (Address Location=0x11B3)
BIT 7
R/O
0
BIT 6
BIT 5
Unused
BIT 4
R/O
R/O
R/O
0
0
0
BIT 3
R/O
0
BIT 2
AIS-C Defect
Declared STS-
1 time-slot # 3
R/O
0
BIT 1
AIS-C Defect
Declared STS-
1 time-slot # 2
R/O
0
BIT 0
Unused
R/O
0
BIT NUMBER
7-3
2
NAME
Unused
AIS-C Defect Declared –
STS-1 Time-Slot # 3
1
AIS-C Defect Declared –
STS-1 Time-Slot # 2
0
Unused
TYPE
R/O
R/O
R/O
R/O
DESCRIPTION
AIS – Concatenation Defect Declared – STS-1 Time-Slot # 3:
This READ-ONLY bit-field indicates whether or not the Receive
STS-3c POH Processor block is declaring the
AIS-C (AIS – Concatenation) defect condition with STS-1 time-
slot # 3 (within the incoming STS-3c signal).
The Receive STS-3c POH Processor block will declare the AIS-
C defect condition, with STS-1 time-slot # 3; if it receives an “All
Ones” string; in the H1, H2 bytes (associated with STS-1 time-
slot # 3) for 3 consecutive STS-3c frames.
0 – Indicates that the Receive STS-3c POH Processor block is
NOT currently declaring the AIS-C defect condition with STS-1
time-slot # 3.
1 – Indicates that the Receive STS-3c POH Processor block is
currently declaring the AIS-C defect condition with STS-1 time-
slot # 3.
Note: This bit-field is only valid if the XRT94L33 is receiving
and processing an STS-3c signal.
AIS – Concatenation Defect Declared – STS-1 Time-Slot # 2
This READ-ONLY bit-field indicates whether or not the Receive
STS-3c POH Processor block is declaring the AIS-C (Loss of
Pointer – Concatenation) defect condition with STS-1 time-slot #
2 (within the incoming STS-3c signal).
The Receive STS-3c POH Processor block will declare the AIS-
C defect condition, with STS-1 time-slot # 2; if it receives an “All
Ones” string in the H1, H2 bytes (associated with STS-1 time-
slot # 2) for 3 consecutive STS-3c frames.
0 – Indicates that the Receive STS-3c POH Processor block is
NOT currently declaring the AIS-C defect condition with STS-1
time-slot # 2.
1 – Indicates that the Receive STS-3c POH Processor block is
currently declaring the AIS-C defect condition with STS-1 time-
slot # 2.
Note: This bit-field is only valid if the XRT94L33 is receiving
and processing an STS-3c signal.
233