tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 382

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

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
17 TMUX Functional Description
Table 526. Signal Degrade (SD) Parameters
Note: The thresholds written by the control system will be one less than the desired number, except for the TMUX_SDLSET[3:0] and
Signal Fail BER Algorithm. A signal degrade state in register bit TMUX_RHSSF
indication is reported in register bit, TMUX_RHSSFD
TMUX_RHSSFM
selected with register bit, TMUX_SDB1B2SEL
algorithm as well with the failure indicated in TMUX_RSFB3[1—3]
Declaring the signal degrade state requires the definition of two measurement windows, a monitoring block consist-
ing of a number of frames in TMUX_SFNSSET[18:0]
ing of a number of monitoring blocks in TMUX_SFBSET[11:0]
number of bit errors equals or exceeds a threshold set in TMUX_SFLSET[3:0]
declared when a number of bad monitoring blocks equals or exceeds the threshold in TMUX_SFMSET[7:0]
(Table
Clearing the signal degrade state requires the definition of two measurement windows, a monitoring block consist-
ing of a number of frames in TMUX_SFNSCLEAR[18:0]
number of monitoring blocks in TMUX_SFBCLEAR[11:0]
ber of bit errors is less than a threshold set in TMUX_SFLCLEAR[3:0]
382
TMUX_SDBCLEAR[15:0]
TMUX_SDMCLEAR[7:0]
TMUX_SDNSSET[18:0]
TMUX_SDLCLEAR[3:0]
TMUX_SDBSET[15:0]
TMUX_SDMSET[7:0]
TMUX_SDLSET[3:0]
TMUX_SDB1B2SEL
TMUX_SDLCLEAR[3:0] parameters.
TMUX_SDCLEAR
TMUX_RHSSDD
TMUX_RHSSDM
TMUX_SDNSCLEAR[18:0]
TMUX_RHSSD
121) for the measurement interval.
TMUX_SDSET
(Table
Name
(Table 86 on page88
120)
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
(Table
78)
91)
82)
86)
78)
120)
120)
95)
120)
120)
120)
120) Signal Degrade M Clear. Threshold of the number of bad monitoring
120) Signal Degrade B Clear. Number of monitoring blocks in a measurement
). This bit error rate algorithm can operate on either B1 or B2 errors
Signal Degrade Ns Set. Number of frames in a monitoring block for SD.
Signal Degrade L Set. Error threshold for determining if a monitoring
block is bad.
Signal Degrade 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 SD is cleared.
Signal Degrade B Set. Number of monitoring blocks in a measurement
interval.
Signal Degrade Ns Clear. Number of frames in a monitoring block for
SD.
Signal Degrade L Clear. Error threshold for determining if a monitoring
block is bad.
blocks in an observation interval. If the number of bad blocks is below this
threshold, then SD is cleared.
interval.
Signal Degrade Set. Allows the signal degrade algorithm to be forced
into the failed state (active 0 to 1).
Signal Degrade Clear. Allows the signal degrade algorithm to be forced
into the normal state (active 0 to 1).
Signal Degrade 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; oth-
erwise, B2 errors are used to calculate the error rate.
Signal Degrade BER Algorithm State Bit.
Signal Degrade BER Algorithm Delta Bit.
Signal Degrade BER Algorithm Mask Bit.
(continued)
(Table 95 on pag
(Table 121 on page117
(Table 82, starting on page79
(Table
(Table
(Table
121) and a measurement interval consisting of a
121). A block is determined good when the num-
e95). Each B3 monitor has its own bit error rate
(Table 92 on pag
121). A block is determined bad when the
(Table
Function
) and a measurement interval consist-
121).
(Table
(Table
), with the interrupt mask bit,
e92).
121). Signal degrade is
91) and change of state
Agere Systems Inc.
May 2001