Invention Grant
- Patent Title: Low power divided scan paths with adapter and scan controller
- Patent Title (中): 带适配器和扫描控制器的低功耗扫描路径
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Application No.: US13757305Application Date: 2013-02-01
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Publication No.: US08627161B2Publication Date: 2014-01-07
- Inventor: Lee D. Whetsel
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G01R31/28
- IPC: G01R31/28

Abstract:
Scan architectures are commonly used to test digital circuitry in integrated circuits. The present disclosure describes a method of adapting conventional scan architectures into a low power scan architecture. The low power scan architecture maintains the test time of conventional scan architectures, while requiring significantly less operational power than conventional scan architectures. The low power scan architecture is advantageous to IC/die manufacturers since it allows a larger number of circuits (such as DSP or CPU core circuits) embedded in an IC/die to be tested in parallel without consuming too much power within the IC/die. Since the low power scan architecture reduces test power consumption, it is possible to simultaneously test more die on a wafer than previously possible using conventional scan architectures. This allows wafer test times to be reduced which reduces the manufacturing cost of each die on the wafer.
Public/Granted literature
- US20130159801A1 ADAPTING SCAN ARCHITECTURES FOR LOW POWER OPERATION Public/Granted day:2013-06-20
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