Data Sheet
June 2002
TMXF28155 Supermapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
17 TMUX Functional Description
Table of Contents
Contents
Page
17 TMUX Functional Description ..........................................................................................................................365
17.1 TMUX Introduction ...................................................................................................................................367
17.2 TMUX Features........................................................................................................................................367
17.3 TMUX Receive Path Overview.................................................................................................................368
17.3.1 Receive Line Framer and Transport Overhead Termination ........................................................ 368
17.3.2 Receive Transport Overhead Monitor and RTOAC Drop ............................................................. 368
17.3.3 Receive MSP 1 + 1 Payload Switch ............................................................................................. 369
17.3.4 Receive Pointer Interpreter ........................................................................................................... 369
17.3.5 Receive High-Order Path Overhead Termination and RPOAC Drop ........................................... 369
17.3.6 Receive Byte Interleave Demultiplexer ......................................................................................... 369
17.3.7 Receive Telecom Bus ................................................................................................................... 369
17.4 TMUX Transmit Path Overview................................................................................................................370
17.4.1 Transmit Telecom Bus .................................................................................................................. 370
17.5 Receive Direction (Receive Path from SONET Global/SDH)...................................................................374
17.5.1 Input Clock and Loss-of-Signal Monitoring ................................................................................... 375
17.5.2 High-Speed Loopback Select Logic .............................................................................................. 375
17.5.3 Frame Alignment—STS-3/STM-1 (AU-4) Framing or STS-1 Framing .......................................... 375
17.5.4 B1 BIP-8 Check ............................................................................................................................ 375
17.5.5 J0 Monitor ..................................................................................................................................... 376
17.5.6 Descrambler .................................................................................................................................. 376
17.5.7 F1 Monitor ..................................................................................................................................... 377
17.5.8 B2 BIP-8 Check ............................................................................................................................ 377
17.5.9 Automatic Protection Switch (APS) Monitor .................................................................................. 377
17.5.10 K2 Monitor, AIS-L, and RDI-L Detect .......................................................................................... 377
17.5.11 M1 REI-L Detect ......................................................................................................................... 378
17.5.12 Sync Status Monitor .................................................................................................................... 378
17.5.13 Receive Transport Overhead Access Channel (RTOAC) ........................................................... 378
17.5.14 MSP 1 + 1 Payload Switch ......................................................................................................... 380
17.5.15 Pointer Interpreter ....................................................................................................................... 380
17.5.16 Path Monitoring Functions .......................................................................................................... 383
17.6 Transmit Direction (Transmit Path to SONET/SDH Line).........................................................................392
17.6.1 Transmit Side Telecom Bus Interface ........................................................................................... 392
17.6.2 Transmit Path and Transport Overhead Insertion Diagram .......................................................... 392
17.6.3 POAC Insert .................................................................................................................................. 394
17.6.4 AIS Path Generation ..................................................................................................................... 395
17.6.5 J1 Insert Control ............................................................................................................................ 395
17.6.6 B3 BIP-8 Calculation and Insert .................................................................................................... 395
17.6.7 C2 Signal Label Byte Insert .......................................................................................................... 395
17.6.8 Path RDI (RDI-P) Insert ................................................................................................................ 396
17.6.9 REI-P: G1(7:4) Insert .................................................................................................................... 397
17.6.10 F2 Byte Insert .............................................................................................................................. 397
17.6.11 H4 Insert Control ......................................................................................................................... 397
17.6.12 F3 Byte Insert .............................................................................................................................. 397
17.6.13 K3 Byte Insert ............................................................................................................................. 397
17.6.14 N1 Byte Insert ............................................................................................................................. 397
17.6.15 MSP 1 + 1 Payload Switch ......................................................................................................... 397
17.6.16 Transmit Transport Overhead Access Channel (TTOAC) .......................................................... 397
17.6.17 Sync Status Byte (S1) Insert ....................................................................................................... 399
17.6.18 REI-L: M1 Insert .......................................................................................................................... 399
Agere Systems Inc.
365
ETC [ ETC ]
