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Preliminary Data Sheet, Rev. 1
October2000
TMXF28155 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
209
Lucent Technologies Inc.
SPE Mapper Functional Description
(continued)
SPE Mapper Receive Direction Requirements
(continued)
B3 BIP-8 Check
A B3 BIP-8 even parity is computed over all the incoming bits of the TUG-3 frame, after descrambling, and com-
pared to the B3 byte received in the next frame. The total number of B3 BIP-8 bit errors (raw count) or block errors
is counted (selected through SPE_B3BITBLKCNT (Table 125)). Upon a performance monitor (PM) interval, the
internal running counter is placed into SPE_B3ECNT[15:0] (Table 136) and then cleared. Depending on the value
of microprocessor bit SMPR_SAT_ROLLOVER (Table 15), the internal counter will roll over or stay at its maximum
value until cleared.
Signal Label C2 Byte Monitor
The C2 byte is stored in SPE_C2DMON[7:0] (Table 128). This is updated after a number of consecutive frames
(determined by the value programmed in SPE_CNTDC2[3:0] (Table 126)) of identical C2 bytes, i.e., the 8-bit pat-
tern must be identical for the number of frames in the programmed SPE_CNTDC2[3:0] prior to updating
SPE_C2DMON[7:0].
Whenever the contents of the C2 byte monitor SPE_C2DMON[7:0] changes, a delta bit SPE_C2DMOND
(Table 122) is set and bit SPE_C2DMONM (Table 123) is the interrupt mask bit.
The SPE mapper maintains a programmable expected value of the C2 byte in SPE_C2DEXP[7:0] (Table 127). If
the current value of the C2 byte (SPE_C2DMON[7:0]) does not equal the expected C2 value (C2DEXP[7:0]) then
a payload label mismatch (PLM-P) defect is declared and reported in SPE_RPLM (Table 124). The change in
PLM-P state is reported in SPE_RPLMD (Table 122) with an interrupt mask bit SPE_RPLMM (Table 123).
Also if the current value of the C2 byte (SPE_C2DMON[7:0]) is all 0s, then an unequipped (UNEQ-P) defect is
declared and reported in SPE_RUNEQ (Table 124). The change in UNEQ-P state is reported in SPE_RUNEQD
(Table 122) with an interrupt mask SPE_RUNEQM (Table 123).
Table 107. C2MON Processing
Name
Function
SPE_C2DMON[7:0] (Table 128)
SPE_C2DEXP[7:0] (Table 127)
SPE_CNTDC2[3:0] (Table 126)
SPE_C2DMOND (Table 122)
SPE_C2DMONM (Table 123)
SPE_RPLM (Table 124)
SPE_RPLMD (Table 122)
SPE_RPLMM (Table 123)
SPE_RUNEQ (Table 124)
SPE_RUNEQD (Table 122)
SPE_RUNEQD (Table 123)
C2 Current Data Monitor.
Expected Value of C2 Byte.
Continuous Times Detect Count Value for C2.
C2 Data Monitor Event Bit.
C2 Data Monitor Mask Bit.
Payload Label Mismatch State.
Payload Label Mismatch Delta Bit.
Payload Label Mismatch Mask Bit.
Unequipped Path State.
Unequipped Path Delta Bit.
Unequipped Path Mask Bit.