
XRT86SH328
PRELIMINARY
318
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
Bits 7 - 2: Unused:
Bit 1 - Change of Receive APS Value Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or disable the "Change of Receive APS Value" Interrupt.
If the user enables this interrupt, then the VT-De-Mapper block will generate this interrupt anytime it has "accepted" a
new APS value (via the K4 byte within the incoming VT-data-stream).
`
0 - Disables the "Change of Receive APS Value" Interrupt.
`
1 - Enables the "Change of Receive APS Value" Interrupt.
Bit 0 - Transmit or Receive Elastic Store Overflow Event Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or disable the "Elastic Store Overflow Event" interrupt. If
the user enables this interrupt, then the channel will generate this interrupt in response to either of the following
conditions.
Whenever the "Transmit FIFO" within the VT-Mapper Block, experiences an overflow event.
Whenever the "Receive FIFO" within the VT-De-Mapper block, experiences an overflow event.
`
0 - Disables the "Elastic Store Overflow Event" Interrupt
`
1 - Enables the "Elastic Store Overflow Event" Interrupt
Bit 7 - VT Size Error Interrupt Enable:
This READ/WRITE bit-field permits the user to either enable or disable the "VT Size Error" Interrupt. If the user enables
this interrupt, then the "VT-De-Mapper" block will generate this interrupt anytime it declares the "VT Size Error" defect
condition.
0 - Disables the "VT Size Error" Interrupt.
1 - Enables the "VT Size Error" Interrupt.
Bit 6 - Change of LOP-V Defect Condition Interrupt Enable
This READ/WRITE bit-field permits the user to either enable or disable the "Change of LOP-V Defect Condition"
T
ABLE
455: C
HANNEL
C
ONTROL
- VT-M
APPER
B
LOCK
- E
GRESS
D
IRECTION
- I
NTERRUPT
E
NABLE
R
EGISTER
(A
DDRESS
= 0
X
ND68,
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
Interrupt
Enable
Elastic Store
Overflow
Event
Interrupt
Enable
R/O
R/O
R/O
R/O
R/O
R/O
R/W
R/W
0
0
0
0
0
0
0
0
T
ABLE
456: C
HANNEL
C
ONTROL
- VT-D
E
-M
APPER
B
LOCK
- E
GRESS
D
IRECTION
- I
NTERRUPT
E
NABLE
R
EGISTER
(A
DDRESS
= 0
X
ND69,
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
VT Size
Error
Interrupt
Enable
Change of
LOP-V
Defect
Condition I
nterrupt
Enable
Change of
RFI-V Defect
Condition
Interrupt
Enable
Change of
RDI-V Defect
Condition
Interrupt
Enable
Change of
AIS-V
Failure
Condition
Interrupt
Enable
Change of
AIS-V Defect
Condition
Interrupt
Enable
Change of
VT Label
Interrupt
Enable
Change of
DS1/E1
AIS Defect
Condition
Interrupt
Enable
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0