Table of Contents
Contents
Page
2
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