tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 413

• 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
18 SPE Mapper Functional Description
The C2 byte is stored in SPE_C2DMON[7:0]
tive frames (determined by the value programmed in SPE_CNTDC2[3:0]
bytes, i.e., the 8-bit pattern 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 146 on page
The SPE mapper maintains a programmable expected value of the C2 byte in SPE_C2DEXP[7:0] (
page
(C2DEXP[7:0]), then a payload label mismatch (PLM-P) defect is declared and reported in SPE_RPLM
(Table
SPE_RPLMM
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
Table 538. C2MON Processing
18.14.5 Path User Byte F2 Monitor
The SPE mapper monitors the path user channel in the F2 byte. The current value of the F2 byte is stored in
SPE_F2DMON0[7:0]
SPE_CNTDF2[3:0]
number of frames equal to the value of SPE_CNTDF2[3:0] prior to updating SPE_F2DMON0[7:0].
Whenever the contents of the F2 byte monitor (SPE_F2DMON0[7:0]) changes, a delta bit SPE_F2DMOND
(Table
The SPE mapper maintains a history of the previous valid F2 byte in SPE_F2DMON1[7:0]
Agere Systems Inc.
140). If the current value of the C2 byte (SPE_C2DMON[7:0]) does not equal the expected C2 value
148). The change in PLM-P state is reported in SPE_RPLMD
146) with an interrupt mask SPE_RUNEQM
146) is set. The interrupt mask is SPE_F2DMONM
SPE_C2DMON[7:0]
SPE_C2DEXP[7:0]
SPE_CNTDC2[3:0]
SPE_C2DMONM
SPE_C2DMOND
SPE_RUNEQD
SPE_RUNEQD
SPE_RPLMD
SPE_RPLMM
SPE_RUNEQ
SPE_RPLM
(Table
(Table
134) is set and bit SPE_C2DMONM
Name
147).
(Table
(Table
(Table
(Table
(Table
150)) of identical F2 byte has been received, i.e., the 8-bit pattern must be identical for a
(Table
(Table
(Table
(Table
152) after a number of consecutive frames (determined by the value programmed in
(Table
(Table
(Table
148)
146)
148)
147)
146)
147)
146)
147)
151)
150)
152)
(Table
(Table 152 on page140
148). The change in UNEQ-P state is reported in SPE_RUNEQD
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.
(Table
(continued)
(Table 147 on page136
147).
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
(Table
147).
(Table
). This is updated after a number of consecu-
(Table 150 on page139
146) with an interrupt mask bit
Function
TMXF28155/51 Super Mapper
) is the interrupt mask bit.
(Table
)) of identical C2
152).
Table 151 on
413