
PRELIMINARY
XRT86SH221
256
REV. P1.0.5
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
BIT 7 - VT Error Event Declared:
This READ-ONLY bit-field indicates that at least one of the following defects, errors or note-worthy conditions are
currently being declared.
VT Size Error
LOP-V Defect Declared
Change in VT Label Event
AIS-V Defect Declared
AIS-V Failure Declared
RFI-V Defect Declared
RDI-V Defect Declared
0 - Indicates that none of these above-mentioned defects, errors or note-worthy conditions are currently being
declared.
1 - Indicates that at least one of the above-mentioned events are currently being declared.
BIT 6 - VT Size ErroDefect Declared:
This READ-ONLY bit-field indicates whether or not the Receive VT-De-Mapper block is currently declaring the VT Size
Error defect condition. The Receive VT-De-Mapper block will declare the VT Size Error defect condition anytime it
receives a VT data-stream with V1 bytes that contains the incorrect VT-Size bit values, as depicted below.
0 - Indicates that the Receive VT-De-Mapper block is NOT currently declaring the VT Size Error Defect condition.
1 - Indicates that the Receive VT-De-Mapper block is currently declaring the VT Size Error Defect condition.
BIT 5 - LOP-V Defect Declared:
This READ-ONLY bit-field indicates whether or not the Receive VT-Mapper block is currently declaring the LOP-V
Defect condition.
0 - Indicates that the Receive VT-De-Mapper Block is currently NOT declaring the LOP-V Defect Condition.
1 - Indicates that the Receive VT-De-Mapper block is currently declaring the LOP-V Defect Condition
BIT 4 - Change in VT Label[2:0] Indicator:
This READ/WRITE 1 to CLEAR bit-field indicates whether or not the Receive VT-De-Mapper block has detected a
Change in VT Signal Label, since the last time the user read and cleared this register bit
0 - Indicates that the Receive VT-De-Mapper block has NOT detected a Change in VT Signal Label since the last time
the user read and cleared this register bit.
BIT [3:1] - VT Label Value[2:0]:
This READ-ONLY bit-field reflects the value of the most recently accepted (or validated) VT Signal Label value.
BIT 0 - AIS-V Defect Declared:
This READ-ONLY bit-field indicates whether or not the Receive VT-De- Mapper block is currently declaring the AIS-V
defect condition, or not.
0 - Indicates that the Receive VT-De-Mapper Block is NOT currently declaring the AIS-V defect condition.
1 - Indicates that the Receive VT-De-Mapper Block is currently declaring the AIS-V defect condition.
T
ABLE
232: C
HANNEL
C
ONTROL
- VT-D
E
M
APPER
E1 D
ROP
C
ONTROL
R
EGISTER
1 (VTDE1DCR1 = 0
X
ND46)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
VT Error
Event
Declared
VT Size
Error
Defect
Declared
LOP-V
Defect
Declared
Change in
VT Label
Value[2:0]
Indicator
VT Label Value[2:0]
AIS-V Defect
Declared
R/O
R/O
R/O
R/W1C
R/O
R/O
R/O
R/O
0
0
1
0
0
0
0
0