
XRT86SH221
PRELIMINARY
271
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
REV. P1.0.5
BIT 7 - Reserved:
BIT 6 - TC RDI-V Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently detecting a Remote Defect
Indicator in Bit-0 of the Tandem Connection Frame 73 for 5 consecutive frames. This alarm is cleared when no RDI
defect indicator is detected in Bit-0 of the Tandem Connection Frame 73 for 5 consecutive frames.
0 - Indicates that the VT-De-Mapper block is NOT currently detecting a TC RDI-V defect condition.
1 - Indicates that the VT-De-Mapper block is currently detecting a TC RDI-V defect condition.
BIT 5 - TC ODI-V Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently detecting an Outgoing Defect
Indicator in Bit-1 of the Tandem Connection Frame 74 for 5 consecutive frames. This alarm is cleared when no ODI-V
defect indicator is detected in Bit-1 of the Tandem Connection Frame 74 for 5 consecutive frames.
0 - Indicates that the VT-De-Mapper block is NOT currently detecting a TC ODI-V defect condition.
1 - Indicates that the VT-De-Mapper block is currently detecting a TC ODI-V defect condition.
BIT 4 - TC API-V Message Mismatch Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently declaring the "Tandem
Connection Access Point Identifier Message Mismatch" defect condition. This defect is declared when a Tandem
Connection API message is accepted that is different from the expected Tandem Connection API message. This defect
is cleared when the expected API message is received on the J2 byte for N consecutive messages, where N is either
3 or 5 depending on the message acceptance threshold set for API messages on Bit-3 of the Channel Control - VT-De-
Mapper Path Trace Buffer Control Register (VTDPTBCR) on address 0xND71.
0 - Indicates that the VT-De-Mapper block is NOT currently declaring a TC API message mismatch.
1 - Indicates that the VT-De-Mapper block is currently declaring a TC API message mismatch.
BIT 3 - Unstable TC API-V Message Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently declaring the "Tandem
Connection Unstable Access Point Identifier Message" defect condition. This defect is declared when the internal TC
API unstable message counter has detected 8 or more consecutively different API message. The VT-De-Mapper block
will increment the internal TC API unstable message counter for each time that it receives a Tandem Connection API
Message that differs from the previously received message. This defect is cleared when the same API message is
received on the J2 byte for N consecutive messages, where N is either 3 or 5 depending on the message acceptance
threshold set for API messages on Bit-3 of the Channel Control - VT-De-Mapper Path Trace Buffer Control Register
(VTDPTBCR) on address 0xND71.
0 - Indicates that the VT-De-Mapper block is NOT currently declaring a TC Unstable API message mismatch.
1 - Indicates that the VT-De-Mapper block is currently declaring a TC Unstable API message mismatch.
T
ABLE
247: C
HANNEL
C
ONTROL
- VT-D
E
M
APPER
T
ANDEM
C
ONNECTION
S
TATUS
R
EGISTER
(VTDTCSR
= 0
X
ND62)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Reserved
TC RDI
Defect
Declared
TC ODI
Defect
Declared
TC API
Message
Mismatch
Defect
Declared
Unstable
TC API
Message
Defect
Declared
TC LOMF
Defect
Declared
TC UNEQ
Defect
Declared
TC AIS
Defect
Declared
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
0
0
0