Invention Grant
US08261143B2 Select signal and component override signal controlling multiplexing TDI/TDO
有权
选择信号和分量覆盖信号控制复用TDI / TDO
- Patent Title: Select signal and component override signal controlling multiplexing TDI/TDO
- Patent Title (中): 选择信号和分量覆盖信号控制复用TDI / TDO
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Application No.: US12116471Application Date: 2008-05-07
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Publication No.: US08261143B2Publication Date: 2012-09-04
- Inventor: Gary L. Swoboda , Robert A. McGowan
- Applicant: Gary L. Swoboda , Robert A. McGowan
- 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
Abstract:
A system comprises a plurality of components, scan chain selection logic coupled to the components, and override selection logic coupled to the scan chain selection logic. The scan chain selection logic selects various of the components to be members of a scan chain under the direction of a host computer. The override selection logic detects a change in the scan chain and, as a result, blocks the entire scan chain from progressing.
Public/Granted literature
- US20090013226A1 BLOCKING THE EFFECTS OF SCAN CHAIN TESTING UPON A CHANGE IN SCAN CHAIN TOPOLOGY Public/Granted day:2009-01-08
Information query
