
Preliminary Data Sheet, Rev. 1
October 2000
TMXF28155 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
113
Lucent Technologies Inc.
TMUX Functional Description
(continued)
Receive Direction (Receive Path from Sonet/SDH)
(continued)
Table 30. Signal Fail Parameters
Note:
The thresholds written by the control system will be one less than the desired number, except for the TMUX_SFLSET[3:0] and
TMUX_SFLCLEAR[3:0] parameters.
Table 31. Signal Fail/Signal Degrade Recommended Programming Values
Name
Function
TMUX_SFNSSET[18:0] (Table 83)
TMUX_SFLSET[3:0] (Table 83)
Signal Fail Ns Set.
Number of frames in a monitoring block for SF.
Signal Fail L Set.
Error threshold for determining if a monitoring block is
bad.
Signal Fail M Set.
Threshold of the number of bad monitoring blocks in
an observation interval. If the number of bad blocks is below this thresh-
old, then SF is cleared.
Signal Fail B Set.
Number of monitoring blocks.
TMUX_SFMSET[7:0] (Table 83)
TMUX_SFBSET[15:0] (Table 83)
TMUX_SFNSCLEAR[18:0] (Table 83)
Signal Fail Ns Clear.
Number of frames in a monitoring block for SF.
TMUX_SFLCLEAR[3:0] (Table 83)
Signal Fail L Clear.
Error threshold for determining if a monitoring block
is bad.
TMUX_SFMCLEAR[7:0] (Table 83)
Signal Fail M Clear.
Threshold of the number of bad monitoring blocks in
an observation interval. If the number of bad blocks is below this thresh-
old, then SF is cleared.
TMUX_SFBCLEAR[15:0] (Table 83)
Signal Fail B Clear.
Number of monitoring blocks.
TMUX_SFB1B2SEL (Table 57)
Signal Fail B1/B2 Error Count Select.
Control bit, when set to a logic 0,
causes the signal fail bit error rate algorithm to use B1 errors; when set to
a logic 1, causes the signal fail bit error rate algorithm to use B2 errors.
TMUX_SFSET (Table 40)
Signal Fail Set.
Allows the signal degrade algorithm to be forced into the
failed state (active 0 to 1).
TMUX_SFCLEAR (Table 40)
Signal Fail Clear.
Allows the signal degrade algorithm to be forced into
the normal state. (active 0 to 1).
TMUX_RHSSF (Table 53)
Signal Fail BER Algorithm State Bit.
TMUX_RHSSFD (Table 44)
Signal Fail BER Algorithm Delta Bit.
TMUX_RHSSFM (Table 48)
Signal Fail BER Algorithm Mask Bit.
Set Threshold
NsSet
LSet
MSet
BSet
Clear
Threshold
1x10
-4
1x10
-5
1x10
-6
1x10
-7
1x10
-8
1x10
-9
1x10
-10
NsClear LClear
MClear
BClear
1x10
-3
1x10
-4
1x10
-5
1x10
-6
1x10
-7
1x10
-8
1x10
-9
0x00001
0x00006
0x00030
0x001E0
0x01275
0x0B5A4
0x3F7A0
0x5
0x8
0x6
0x6
0x6
0x6
0x4
0x3D
0x03
0x03
0x03
0x04
0x04
0x05
0x003D
0x0007
0x0007
0x0007
0x0009
0x0009
0x0013
0x00001
0x00006
0x00030
0x001E0
0x01275
0x0B5A4
0x3F7A0
0x6
0x2
0x2
0x2
0x2
0x2
0x2
0x03
0x03
0x03
0x03
0x04
0x03
0x02
0x0007
0x0007
0x0007
0x0007
0x0009
0x0009
0x000F