DS2152L datasheet(2/97 Pages) MAXIM

2 / 97 page

DS2152

2 of 97

TABLE OF CONTENTS

1 DETAILED DESCRIPTION....................................................................................................6

1.1

INTRODUCTION................................................................................................................................6

1.1.1

New Features......................................................................................................................................... 6

1.2

FUNCTIONAL DESCRIPTION ..............................................................................................................7

1.3

READER’S NOTE..............................................................................................................................7

2 PIN DESCRIPTION................................................................................................................9

2.1

TRANSMIT SIDE DIGITAL PINS ........................................................................................................11

2.2

RECEIVE SIDE DIGITAL PINS ..........................................................................................................12

2.3

PARALLEL CONTROL PORT PINS ....................................................................................................13

2.4

LINE INTERFACE PINS....................................................................................................................14

2.5

SUPPLY PINS ................................................................................................................................14

3 PARALLEL PORT ...............................................................................................................18

4 CONTROL, ID, AND TEST REGISTERS ............................................................................18

4.1

PAYLOAD LOOPBACK.....................................................................................................................24

4.2

FRAMER LOOPBACK ......................................................................................................................24

4.3

PULSE DENSITY ENFORCER...........................................................................................................24

4.4

LOCAL LOOPBACK .........................................................................................................................24

4.5

POWER-UP SEQUENCE .................................................................................................................30

4.6

REMOTE LOOPBACK ......................................................................................................................30

5 STATUS AND INFORMATION REGISTERS ......................................................................31

6 ERROR COUNT REGISTERS.............................................................................................40

6.1

LINE CODE VIOLATION COUNT REGISTER (LCVCR) .......................................................................40

6.2

PATH CODE VIOLATION COUNT REGISTER (PCVCR)......................................................................41

6.3

MULTIFRAMES OUT OF SYNC COUNT REGISTER (MOSCR) ............................................................41

7 DS0 MONITORING FUNCTION ..........................................................................................43

8 SIGNALING OPERATION...................................................................................................47

8.1

PROCESSOR-BASED SIGNALING ....................................................................................................47

8.2

HARDWARE-BASED SIGNALING ......................................................................................................49

8.2.1

Receive Side ........................................................................................................................................ 49

8.2.2

Transmit Side ....................................................................................................................................... 49

9 PER-CHANNEL CODE (IDLE) GENERATION AND LOOPBACK .....................................50

9.1

TRANSMIT SIDE CODE GENERATION ..............................................................................................50

9.1.1

Simple Idle Code Insertion and Per-Channel Loopback...................................................................... 50

9.1.2

Per-Channel Code Insertion ................................................................................................................ 51

9.2

RECEIVE SIDE CODE GENERATION ................................................................................................52

9.2.1

Simple Code Insertion.......................................................................................................................... 52

9.2.2

Per-Channel Code Insertion ................................................................................................................ 52

CLOCK BLOCKING REGISTERS....................................................................................54

ELASTIC STORES OPERATION.....................................................................................55

11.1

RECEIVE SIDE............................................................................................................................55

11.2

TRANSMIT SIDE..........................................................................................................................55

11.3

MINIMUM DELAY SYNCHRONOUS RSYSCLK/TSYSCLK MODE...................................................56

FDL/FS EXTRACTION AND INSERTION ........................................................................57

12.1

HDLC AND BOC CONTROLLER FOR THE FDL.............................................................................57

12.1.1

Status Register for the FDL ................................................................................................................. 57

12.1.2

Basic Operation Details........................................................................................................................ 58

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