Adaptable scan chains for debugging and manufacturing test purpo

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing

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365201, G01R 3128

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active

060188154

ABSTRACT:
Scan chains to support debugging and manufacturing test modes for integrated circuit chips are made adaptable. Scan chains may be configured either in a multiple scan chain JTAG mode or in a multiple independent and parallel scan chain mode. The configuration transition between the scan modes is made by private instructions implemented in a JTAG controller, which supports the IEEE 1149.1 standard.

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