S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
Register 0x014, 0x114, 0x214, 0x314, 0x414, 0x514, 0x614, 0x714:
TSOP Control
Bit
Type
Function
Unused
DS
Reserved
Reserved
Reserved
Reserved
Reserved
LAIS
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
X
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LAIS:
The LAIS bit controls the insertion of line alarm indication signal (AIS). When LAIS is set
to logic one, the TSOP inserts AIS into the transmit SONET/SDH stream. Activation or
deactivation of line AIS insertion is synchronized to frame boundaries. Line AIS insertion
results in all bits of the SONET/SDH frame being set to 1 prior to scrambling except for the
section overhead.
DS:
The DS bit is set to logic one to disable the scrambling of the STS-3c/STM-1 stream. When
DS is a logic zero, scrambling is enabled.
Reserved:
The reserved bits must be programmed to logic zero for proper operation.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
146
PMC [ PMC-SIERRA, INC ]
