
XRT86SH328
PRELIMINARY
314
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
BIT 7 - 3 - Unused:
BIT 2 - TIM-V Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently declaring the "VT Trace
Identification Mismatch" (TIM-V) defect condition.
The VT-De-Mapper block will declare the TIM-V defect condition, when none of the received 1, 16 or 64-byte string
(received via the J2 byte, within the incoming VT-data-stream) matches the expected 1, 16 or 64 byte message.
The VT-De-Mapper block will clear the "TIM-V" defect condition, when 80% of the received 1, 16 or 64 byte string
(received via the J2 byte) matches the 1, 16 or 64 byte message.
`
0 - Indicates that the VT-De-Mapper block is NOT currently declaring the TIM-V defect condition.
`
1 - Indicates that the VT-De-Mapper block is currently declaring the TIM-V defect condition.
BIT 1 - VT Path Trace Message Unstable Defect Declared:
This READ-ONLY bit-field indicates whether or not the VT-De-Mapper block is currently declaring the "VT Path Trace
Message Unstable" defect condition. The VT-De-Mapper block will declare the "VT Path Trace Message Unstable"
defect condition, whenever the "VT Path Trace Message Unstable" counter reaches the value "8". The VT-De-Mapper
block will increment the "VT Path Trace Message Unstable" counter for each time that it receives a "VT Path Trace
Message" that differs from the previously received message. The "VT Path Trace Message Unstable" counter is cleared
to "0" whenever the VT-De-Mapper block has received a given "VT Path Trace Message" 3 (or 5) consecutive times.
`
0 - Indicates that the VT-De-Mapper block is NOT currently declaring the "VT:Path Trace Message Unstable" defect
condition.
`
1 - Indicates that the VT De-Mapper block is currently declaring the "VT Path Trace Message Unstable" defect
condition.
N
OTE
:
The VT-De-Mapper block will also set this bit-field "0" anytime it receives a given "VT Path Trace Message" 3 (or 5)
consecutive times.
BIT 0 - Unused:
Bits 7 - 2: Unused:
Bit 1 - Change of Receive APS Value Interrupt:
This RESET-upon-READ bit-field indicates whether or not the "VT-De-Mapper" block has generated the "Change of
T
ABLE
451: C
HANNEL
C
ONTROL
- VT-D
E
-M
APPER
B
LOCK
- E
GRESS
D
IRECTION
- J2 B
YTE
S
TATUS
R
EGISTER
(A
DDRESS
= 0
X
ND63,
WHERE
N
RANGES
IN
VALUE
FROM
0
X
01
TO
0
X
1C)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Unused
TIM-V Defect
Declared
VT Path Trace
Message
Unstable Defect
Declared
Unused
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
0
0
0
T
ABLE
452: C
HANNEL
C
ONTROL
- VT-M
APPER
B
LOCK
- E
GRESS
D
IRECTION
- C
OMPOSITE
S
TATUS
R
EGISTER
-
B
YTE
0 (A
DDRESS
= 0
X
ND64,
WHERE
N
RANGES
IN
VALUE
FROM
0
X
01
TO
0
X
1C)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Unused
Change of
Receive APS
Value -
Composite
Elastic Store
Overflow
Event -
Composite
R/O
R/O
R/O
R/O
R/O
R/O
RUR
RUR
0
0
0
0
0
0
0
0