DS2174
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TABLE OF CONTENTS
1. GENERAL OPERATION ................................................................................................................4
1.1 PATTERN GENERATION ...........................................................................................................4
1.2 PATTERN SYNCHRONIZATION...............................................................................................5
1.3 BIT ERROR RATE (BER) CALCULATION...............................................................................5
1.4 GENERATING ERRORS..............................................................................................................5
1.5 CLOCK DISCUSSION..................................................................................................................6
1.6 POWER-UP SEQUENCE..............................................................................................................6
1.7 DETAILED PIN DESCRIPTION..................................................................................................8
2. PARALLEL CONTROL INTERFACE........................................................................................10
3. CONTROL REGISTERS ...............................................................................................................11
3.1 STATUS REGISTER...................................................................................................................15
3.2 PSEUDORANDOM PATTERN REGISTERS ...........................................................................15
3.3 TEST REGISTER ........................................................................................................................17
3.4 COUNT REGISTERS ..................................................................................................................17
4. RAM ACCESS.................................................................................................................................18
4.1 INDIRECT ADDRESSING .........................................................................................................18
5. DC OPERATION ............................................................................................................................19
6. AC TIMING CHARACTERISTICS .............................................................................................20
6.1 PARALLEL PORT ......................................................................................................................20
6.2 DATA INTERFACE....................................................................................................................22
7. MECHANICAL DIMENSIONS ....................................................................................................24
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