tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 383

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

Preliminary Data Sheet
May 2001
17 TMUX Functional Description
Signal degrade is cleared when a number of good monitoring blocks equals or exceeds the threshold in
TMUX_SFMCLEAR[7:0]
The set parameters are used when the signal fail state is clear, and the clear parameters are used when the signal
fail state is declared.
The signal degrade state may be forced to the declared state with TMUX_SFSET
cleared state with TMUX_SFCLEAR
the failed state or normal state, respectively.
The above algorithm can detect bit error rates from 1 x 10
Table 527. 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
Agere Systems Inc.
TMUX_SFBCLEAR[15:0]
TMUX_SFMCLEAR[7:0]
TMUX_SFNSSET[18:0]
TMUX_SFLCLEAR[3:0]
TMUX_SFBSET[15:0]
TMUX_SFMSET[7:0]
TMUX_SFLSET[3:0]
TMUX_SFB1B2SEL
TMUX_SFLCLEAR[3:0] parameters.
TMUX_SFCLEAR
TMUX_RHSSFM
TMUX_RHSSFD
TMUX_SFNSCLEAR[18:0]
TMUX_RHSSF
TMUX_SFSET
(Table
Name
121)
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
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(Table
(Table
(Table
78)
91)
82)
86)
78)
121) for the measurement interval.
121)
121)
95)
121)
121)
121)
121) Signal Fail M Clear. Threshold of the number of bad monitoring blocks in
121) Signal Fail B Clear. Number of monitoring blocks.
(Table
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.
Signal Fail Ns Clear. Number of frames in a monitoring block for SF.
Signal Fail L Clear. Error threshold for determining if a monitoring block
is bad.
an observation interval. If the number of bad blocks is below this thresh-
old, then SF is cleared.
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.
Signal Fail Set. Allows the signal degrade algorithm to be forced into the
failed state (active 0 to 1).
Signal Fail Clear. Allows the signal degrade algorithm to be forced into
the normal state. (active 0 to 1).
Signal Fail BER Algorithm State Bit.
Signal Fail BER Algorithm Delta Bit.
Signal Fail BER Algorithm Mask Bit.
78). One shot signal must be provided to force the BER algorithm into
(continued)
–3
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
to 1 x 10
–9
.
Function
TMXF28155/51 Super Mapper
(Table
78) and forced to the
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