Control device for interface control between a test machine and

Details Control device for interface control between a test machine and Control device for interface control between a test machine and

1993-04-13

1995-10-31

Ramirez, Ellis B.

Excavating

371 27, 371 61, H04B 1700

Patent

active

054636388

ABSTRACT:
There is disclosed a control device for interfacing between a test machine and electronic circuitry under test. The test machine generates a pattern that is composited with background data in a predetermined configuration. Each output bit is specified as either foreground or background through an indicator memory. Foreground data and background data are put at their intended positions while using a barrel shifter, decompressing means and an output multiplexer. After the test, a counterpart procedure is used for extracting exclusively relevant data at the expense of dummy data.

REFERENCES:
IEEE Standard 1149.1-1190 "Standard Test Access Port and Boundary Scan Architecture", 21 May 1990.

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