S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
Bit
Name
Description
This bit is set to logic 1 by the S/UNI-ATLAS-3200 when a end-to-
end RDI cell is transmitted, and set to logic 0 when the RDI
background process determines there is no reason to continue
sending end-to-end RDI. In addition to setting this bit when
transmitting a end-to-end RDI cell on reception of an AIS cell, the
S/UNI-ATLAS-3200 will use the 0.5 second background process to
scan through all connections and determine if a end-to-end RDI cell
is to be transmitted (within 0.5 seconds of detecting the appropriate
condition). When the first end-to-end RDI cell is transmitted, this bit
is asserted and subsequent end-to-end RDI cells are only
transmitted by the 1 second background process.
If this bit is logic 0, the S/UNI-ATLAS-3200 has not yet begun to
transmit end-to-end RDI cells (possibly due the RDI BCIF being full).
This bit should be set to logic 0 when the connection is set up.
15:14 OAM_Failure_Count
This count is set to 3 (to provide a 3.5 ± 0.5 second count)
whenever there is no AIS, CC or RDI alarm declared, and is
decremented at one-second intervals whenever there is an AIS, CC,
or RDI alarm. If it is read back as 0, then the OAM_Failure bit will
be set to logic 1, and an interrupt and/or an entry in the COS fifo will
be made, as appropriate.
This field should be set to 3 when the connection is set up.
13
12
Send_Seg_CC_Count
Send_End_CC_Count
The Send_Seg_CC_Count is set to logic 1 (to provide a one second
count) at connection setup time and each time the S/UNI-ATLAS-
3200 sends a user (or a received segment CC cell) cell on this
connection. The count is decremented at one second intervals. If
this count reaches zero and is still 0 when it is read in the
subsequent second, then a Segment CC cell is generated, if the
CC_Activate_Segment bit is set.
This bit should be set to logic 1 when the connection is set up.
The Send_End_CC_Count is set to logic 1 (to provide a one second
count) at connection setup time and each time the S/UNI-ATLAS-
3200 sends a user cell (or a received end-to-end CC cell) on this
connection. The count is decremented at one second intervals. If
this count reaches zero and is still 0 when it is read in the
subsequent second, then an End-to-End CC cell is generated, if the
CC_Activate_End_to_End bit is set.
This bit should be set to logic 1 when the connection is set up.
11:10 Seg_CC_Count[1:0]
The Seg_CC_Count is set to a value of 3 (to provide a 3.5 +/- 0.5
sec count) upon receipt of a user or segment CC cell, and
decremented at one second intervals. If the Seg_CC_Count
reaches 0 and is still 0 when it is read in the subsequent second, the
CC_segment Alarm is raised.
This field should be set to 3 when the connection is set up.
9:8
7:6
End_CC_Count[1:0]
Seg_RDI_Count[1:0]
The End_CC_Count is set to a value of 3 (to provide a 3.5 +/- 0.5
sec count) upon receipt of a user or end-to-end CC cell, and
decrements at one second intervals. If the End_CC_Count reaches
0 and is still 0 when it is read in the subsequent second, the
CC_end_to_end Alarm is raised.
This field should be set to 3 when the connection is set up.
The Seg_RDI_count is set to a value of 2 (to provide a 2.5 +/- 0.5
sec count) upon receipt of a segment RDI cell, and decrements at
one second intervals. If the Seg_RDI_Count reaches 0 and is still 0
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
85
PMC [ PMC-SIERRA, INC ]
