发明授权
- 专利标题： Semiconductor device adapted for forming multiple scan chains
- 专利标题（中）： 适用于形成多个扫描链的半导体器件
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申请号： US10676536申请日： 2003-09-30
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公开(公告)号： US07269771B1公开(公告)日： 2007-09-11
- 发明人: Daniel B. Young , Jeffrey S. Byrne
- 申请人： Daniel B. Young , Jeffrey S. Byrne
- 申请人地址： US OR Hillsboro
- 专利权人： Lattice Semiconductor Corporation
- 当前专利权人： Lattice Semiconductor Corporation
- 当前专利权人地址： US OR Hillsboro
- 代理机构： MacPherson Kwok Chen & Heid LLP
- 代理商 Jonathan W. Hallman
- 主分类号： G01R31/28
- IPC分类号： G01R31/28
摘要：
A device includes data input and data output pins such as found in a JTAG port and a first plurality of boundary scan cells. The device is configurable to support a secondary boundary scan cells formed from the first plurality of boundary scan cells and a second plurality of boundary scan cells in at least one external device. In one embodiment, the device includes a demultiplexer which may be configured to support a primary boundary scan chain between the JTAG port and the first plurality of boundary scan cells. The demultiplexer may also be configured to support the secondary boundary scan chain between the JTAG port and the first and the second plurality of boundary scan cells.
公开/授权文献
- US2131840A Shoe upper stretching machine 公开/授权日：1938-10-04
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