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COMPRESSED SCAN CHAIN DIAGNOSIS BY INTERNAL CHAIN OBSERVATION, PROCESSES, CIRCUITS, DEVICES AND SYSTEMS
COMPRESSED SCAN CHAIN DIAGNOSIS BY INTERNAL CHAIN OBSERVATION, PROCESSES, CIRCUITS, DEVICES AND SYSTEMS
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机译：通过内部链式观察，过程，电路，设备和系统进行压缩扫描链诊断
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摘要
Electronic scan circuitry includes a decompressor (510), a plurality of scan chains (520.i) fed by the decompressor (510), a scan circuit (502, 504) coupled to the plurality of scan chains (520.i) to scan them in and out, a masking circuit (590) fed by the scan chains (520.i), and a scannable masking qualification circuit (550, 560, 580) coupled to the masking circuit (590), the masking qualification circuit (550, 560, 580) scannable by scan-in of bits by the decompressor (510) along with scan-in of the scan chains (520.i), and the scannable masking qualification circuit (550, 560, 580) operable to hold such scanned-in bits upon scan-out of the scan chains through the masking circuit (590). Other scan circuitry, processes, circuits, devices and systems are also disclosed.
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机译：电子扫描电路包括解压缩器（ 510 ），由解压缩器（ 510）馈送的多个扫描链（ 520。 i ） ），耦合到多个扫描链（ 520。 i ）的扫描电路（ 502、504 ）对其进行扫描由扫描链（ 520。 i ）馈入的屏蔽电路（ 590 ）和可扫描的屏蔽限定电路（< B> 550、560、580 ）耦合到屏蔽电路（ 590 ），该屏蔽资格电路（ 550、560、580 ）可通过以下方式扫描：解压缩器（ 510 ）的输入比特数以及扫描链（ 520。 i ）的扫描输入数和可扫描的屏蔽资格电路（ 550、560、580 ）可操作，以便在通过屏蔽电路（ 590 ）扫描出扫描链时，保持这些扫描入位。还公开了其他扫描电路，过程，电路，设备和系统。
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