DS21348

Manufacturer Part NumberDS21348
Description3.3V E1/T1/J1 Line Interface
ManufacturerDallas Semiconducotr
DS21348 datasheet
 


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1.
LIST OF FIGURES............................................................................................................................... 4
2.
LIST OF TABLES ................................................................................................................................ 5
3.
INTRODUCTION................................................................................................................................. 6
3.1
DOCUMENT REVISION HISTORY ............................................................................................ 6
4.
PIN DESCRIPTION ............................................................................................................................. 9
5.
HARDWARE MODE ......................................................................................................................... 22
5.1
REGISTER MAP .......................................................................................................................... 23
5.2
PARALLEL PORT OPERATION................................................................................................ 23
5.3
SERIAL PORT OPERATION ...................................................................................................... 24
6.
CONTROL REGISTERS.................................................................................................................... 24
6.1
DEVICE POWER-UP AND RESET ............................................................................................ 31
7
STATUS REGISTERS ....................................................................................................................... 34
8.
DIAGNOSTICS .................................................................................................................................. 39
8.1
IN-BAND LOOP CODE GENERATION AND DETECTION ................................................... 39
8.2
LOOPBACKS ............................................................................................................................... 43
8.2.1
Remote Loopback (RLB)......................................................................................................... 43
8.2.2
Local Loopback (LLB)............................................................................................................ 43
8.2.3
Analog Loopback (LLB).......................................................................................................... 44
8.2.4
Dual Loopback (DLB) ............................................................................................................ 44
8.3
PRBS GENERATION & DETECTION ....................................................................................... 44
8.4
ERROR COUNTER...................................................................................................................... 44
8.4.1
Error Counter Update ............................................................................................................ 45
8.5
ERROR INSERTION.................................................................................................................... 45
9.
ANALOG INTERFACE ..................................................................................................................... 46
9.1 RECEIVER..................................................................................................................................... 46
9.2
TRANSMITTER ........................................................................................................................... 47
9.3
JITTER ATTENUATOR .............................................................................................................. 47
9.4
G.703 SYNCHRONIZATION SIGNAL ...................................................................................... 48
10. DS21Q348 QUAD LIU....................................................................................................................... 55
11. DC CHARACTERISTICS.................................................................................................................. 59
12. AC CHARACTERISTICS.................................................................................................................. 61
13. MECHANICAL DIMENSIONS......................................................................................................... 70
13.1 MECHANICAL DIMENSIONS—QUAD VERSION................................................................. 72
TABLE OF CONTENTS
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