Invention Grant
US08392774B2 Receiving control signals and operating separate scan paths with adaptor 有权
接收控制信号并用适配器操作单独的扫描路径

  • Patent Title: Receiving control signals and operating separate scan paths with adaptor
  • Patent Title (中): 接收控制信号并用适配器操作单独的扫描路径
  • Application No.: US13167418
    Application Date: 2011-06-23
  • Publication No.: US08392774B2
    Publication Date: 2013-03-05
  • Inventor: Lee D. Whetsel
  • Applicant: Lee D. Whetsel
  • Applicant Address: US TX Dallas
  • Assignee: Texas Instruments Incorporated
  • Current Assignee: Texas Instruments Incorporated
  • Current Assignee Address: US TX Dallas
  • Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
  • Main IPC: G01R31/28
  • IPC: G01R31/28
Receiving control signals and operating separate scan paths with adaptor
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.
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