VSC6134
Datasheet
The following shows the STAT field decoding:
Table 52. TCM STAT Field Decoding
STAT Value
0x0
Status Bit
Description
OTUk_TCM_LTCS
OTUk_TCM_IAES
Loss of tandem connection
0x1
In use without IAE
0x2
In use with IAE
0x3
Reserved for future standardization
Reserved for future standardization
Maintenance signal: ODUk-LCK (locked)
Maintenance signal: ODUk-OCI (open connection indication)
Maintenance signal: ODUk-AIS (alarm indicator signal)
0x4
0x5
OTUk_TCM_LCKS
OTUk_TCM_OCIS
OTUk_TCM_AISS
0x6
0x7
Any one of the following conditions resets the debouncing and pauses TCM STAT field monitoring:
●
●
●
OOF when OTUk_OOFDBC_CTRL = 1
LOF
LOS
2.9.5.4
2.9.5.5
ODUk TCM Activation/Deactivation Coordination (TCM ACT)
There is no on-chip processing for the TCM ACT byte.
ODUk Path Monitoring (PM) Overhead
PM TTI Monitor
The PM TTI monitor stores the PM TTI bytes in the stack OTUk_PM_TTI[31:0][15:0] at locations
pointed to by MFAS. The microprocessor may point to any byte in the stack by initializing the
microprocessor stack pointer OTUk_PM_TTIPNT[4:0]. Each microprocessor read of or write to the
stack automatically increments the microprocessor stack pointer. (Writes to the stack are for testing
purposes only.)
The live bits OTUk_PM_TTISAPIL (SAPI), OTUk_PM_TTIDAPIL (DAPI), and
OTUk_PM_TTIOPSL (operator-specific) indicate whether the respective TTI fields stored in the stack
are valid (1) or invalid (0). A change of any field state sets the respective status bit
OTUk_PM_TTISAPIS (SAPI), OTUk_PM_TTIDAPIS (DAPI), or OTUk_PM_TTIOPSS (operator-
specific). The status bits with their respective interrupt mask bits OTUk_PM_TTISAPIM (SAPI),
OTUk_PM_TTIDAPIM (DAPI), and OTUk_PM_TTIOPSM (operator-specific) create maskable
hardware interrupts.
A TTI trace is valid after n consecutive matches (that is, debounced n times), where n has a value of 1
through 8 and is set through register bits OTUk_TTI_MAT[2:0]. A TTI trace is invalid after
m consecutive mismatches, where m has a value of 1 through 8 and set through register bits
OTUk_TTI_MIS[2:0].
130 of 438
VMDS-10185 Revision 4.0
July 2006
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
