DS26324GN datasheet(2/112 Pages) MAXIM

2 / 112 page

DS26324 3.3V, 16-Channel, E1/T1/J1, Short-Haul Line Interface Unit

2 of 112

TABLE OF CONTENTS

STANDARDS COMPLIANCE ........................................................................................................ 6

1.1

TELECOM SPECIFICATIONS COMPLIANCE .......................................................................................................... 6

DETAILED DESCRIPTION............................................................................................................. 7

BLOCK DIAGRAMS....................................................................................................................... 8

PIN DESCRIPTION ...................................................................................................................... 10

FUNCTIONAL DESCRIPTION ..................................................................................................... 18

5.1

PORT OPERATION ......................................................................................................................................... 18

5.1.1

Serial Port Operation .......................................................................................................................... 18

5.1.2

Parallel Port Operation........................................................................................................................ 19

5.1.3

Interrupt Handling................................................................................................................................ 19

5.2

POWER-UP AND RESET ................................................................................................................................. 20

5.3

MASTER CLOCK ............................................................................................................................................. 20

5.4

TRANSMITTER ............................................................................................................................................... 21

5.4.1

Transmit Line Templates .................................................................................................................... 23

5.4.2

LIU Transmit Front End....................................................................................................................... 26

5.4.3

Dual Rail.............................................................................................................................................. 27

5.4.4

Single-Rail Mode................................................................................................................................. 27

5.4.5

Zero Suppression—B8ZS or HDB3 .................................................................................................... 27

5.4.6

Transmit Power-Down ........................................................................................................................ 27

5.4.7

Transmit All Ones................................................................................................................................ 28

5.4.8

Drive Failure Monitor........................................................................................................................... 28

5.5

RECEIVER ..................................................................................................................................................... 28

5.5.1

Receiver Monitor Mode....................................................................................................................... 28

5.5.2

Peak Detector and Slicer .................................................................................................................... 28

5.5.3

Receive Level Indicator....................................................................................................................... 28

5.5.4

Clock and Data Recovery ................................................................................................................... 29

5.5.5

Loss of Signal...................................................................................................................................... 29

5.5.6

AIS ...................................................................................................................................................... 30

5.5.7

Bipolar Violation and Excessive Zero detector ...................................................................................31

5.6

JITTER ATTENUATOR ..................................................................................................................................... 31

5.7

G.772 MONITOR ........................................................................................................................................... 32

5.8

LOOPBACKS .................................................................................................................................................. 32

5.8.1

Analog Loopback ................................................................................................................................ 32

5.8.2

Digital Loopback.................................................................................................................................. 33

5.8.3

Remote Loopback ............................................................................................................................... 34

5.9

BERT........................................................................................................................................................... 34

5.9.1

General Description ............................................................................................................................ 34

5.9.2

Configuration and Monitoring.............................................................................................................. 35

5.9.3

Receive Pattern Detection .................................................................................................................. 36

5.9.4

Transmit Pattern Generation............................................................................................................... 38

REGISTER MAPS AND DEFINITION .......................................................................................... 39

6.1

REGISTER DESCRIPTION................................................................................................................................48

6.1.1

Primary Register Bank ........................................................................................................................ 48

6.1.2

Secondary Register Bank ................................................................................................................... 60

6.1.3

Individual LIU Register Bank............................................................................................................... 62

6.1.4

BERT Registers .................................................................................................................................. 78

JTAG-BOUNDARY-SCAN ARCHITECTURE AND TEST-ACCESS PORT ................................. 85

7.1

TAP CONTROLLER STATE MACHINE............................................................................................................... 86

7.2

INSTRUCTION REGISTER ................................................................................................................................89

7.3

TEST REGISTERS........................................................................................................................................... 90

7.4

BOUNDARY SCAN REGISTER .......................................................................................................................... 90

7.5

BYPASS REGISTER ........................................................................................................................................ 90

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