TMUX03155 datasheet(2/120 Pages) AGERE

2 / 120 page

Table of Contents

Contents

Page

Agere Systems Inc.

Preliminary Data Sheet

April 2001

TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer

Features ...................................................................................................................................................................1

Applications ..............................................................................................................................................................1

Description ................................................................................................................................................................1

Nomenclature Assumptions ......................................................................................................................................7

Block Diagram ..........................................................................................................................................................7

Pin Information .........................................................................................................................................................9

Summary of I/O Pins .........................................................................................................................................15

Mode Control Signals (See Register Description on page 54.) ..............................................................................16

STS-1 Mode ...........................................................................................................................................................16

Transmit Direction Overview ..................................................................................................................................17

STS-1/AU-3 Bus Mode Input Retiming ..............................................................................................................17

Input Select Control ...........................................................................................................................................17

STS-1/AU-3 Inputs ............................................................................................................................................17

Out-of-Frame (OOF) and Loss-of-Frame (LOF) Monitoring ..............................................................................18

Descramble Enable/Disable ..............................................................................................................................18

Monitor B1 and B2 Errors ..................................................................................................................................19

H4 Multiframe and Pointer Monitor (AU-4 Mode Only) ......................................................................................19

STS-3 Generate ................................................................................................................................................20

Transport Overhead Access Channel (TOAC) Insert ........................................................................................23

STS-3/STM-1 (AU-4) Scramble Enable ............................................................................................................23

STS-3/STM-1 (AU-4) B1, B2, and B3 BIP Generation ......................................................................................23

STS-3/STM-1 (AU-4) Loopback Control ............................................................................................................23

STS-3/STM-1 (AU-4) Output Interface ..............................................................................................................23

Receive Direction Overview ...................................................................................................................................23

Input Retime ......................................................................................................................................................24

Clock and Data Recovery ..................................................................................................................................24

STS-3/STM-1 (AU-4) Framing ...........................................................................................................................24

Loss of Signal ....................................................................................................................................................24

Loopback Select Logic ......................................................................................................................................25

RSTS-3/STM-1 (AU-4) Frame Synchronous Descrambling (SONET/SDH) .....................................................25

TOAC Drop ........................................................................................................................................................25

B1, B2, and B3 Checking ..................................................................................................................................25

Monitoring Functions .........................................................................................................................................25

Pointer Interpretation .........................................................................................................................................25

Data Demultiplex and Conversion (AU-4 Mode Only) .......................................................................................26

STS-1/AU-3 Output Byte Control ......................................................................................................................26

B1 and B2 Generate ..........................................................................................................................................26

STS-1/AU-3 Output Scramble ...........................................................................................................................27

Output Selection Logic ......................................................................................................................................27

Output Data Formatter ......................................................................................................................................27

Maintenance Functions ..........................................................................................................................................27

Maintenance Functions Disabled During Failure Conditions .............................................................................28

Common Maintenance and Control Functions ..................................................................................................28

Transmit Functions ............................................................................................................................................30

Receive Functions .............................................................................................................................................38

Typical Uses ...........................................................................................................................................................45

Section and Line Termination Multiplex ............................................................................................................45

Add/Drop Multiplex ............................................................................................................................................46

Digital Cross Connect ........................................................................................................................................46

Microprocessor Interface ........................................................................................................................................47

Overview ...........................................................................................................................................................47

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