tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 420

• 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
18 SPE Mapper Functional Description
18.15 Transmit Direction (to SONET/SDH Line)
The transmit block inserts the path overhead (POH) bytes to the payload data and outputs an STS-1 SPE or a
TUG-3 payload as required.
The transmit section is broken down into the following functional parts:
All insert control functions that are inhibited will insert all zeros or all ones into the outgoing bytes depending on the
value of microprocessor register bit SMPR_OH_DEFLT
18.15.1 PATH Insertion Block
The path overhead insertion block of the SPE mapper is shown below. The block computes and inserts the B3 BIP
error bytes and the rest of the path overhead bytes to form a TUG-3 frame.
420
Loss of clock and loss of sync detectors
N1 insert
K3 insert
Path user byte F3 insert
Path user byte F2 insert
AIS-P insert
REI-P insert
RDI-P insert
C2 signal label insert
B3 calculation and insert
J1 path trace insert
INSERT
J1
J1
INSERT
F2, F3, C2, N1, AND J1
APS
K3
POAC INSERT
K3
Figure 37. Transmit Direction Path Insertion Block
INSERT
RDI-P
G1
G1
INSERT PATH OVERHEAD BYTES
INSERT
REI-P
G1
G1
TUG-3 DATA
INSERT
INSERT
B3
N1
N1
(continued)
(Table
INSERT
GENERATE
INSERT
AIS-P
C2
67).
C2
B3
INSERT
F3
F3
TO TMUX INTERFACE
INSERT
F2
F2
BLOCK
INSERT H4
FIXED VAL
H4
VC-3 DATA
Agere Systems Inc.
May 2001
5-9069(F)