Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – Having selection between plural continuous waveforms
Reexamination Certificate
2007-05-22
2007-05-22
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
Having selection between plural continuous waveforms
C327S407000
Reexamination Certificate
active
11033756
ABSTRACT:
Access is provided to internal analog voltage signals on internal analog nodes of an integrated circuit, without distortion of the internal analog voltage signals. An integrated circuit includes a voltage access circuit having buffered multiplexer circuits in proximity to respective groups of internal analog nodes for respective internal analog voltage signals. Each voltage access circuit outputs a selected one of the corresponding group of internal analog voltage signals as a buffered analog node signal. The voltage access circuit also includes a buffering output circuit configured for outputting a selected one of the buffered analog node signals from the respective buffered multiplexer circuits, as a buffered voltage signal, to an output pad configured for supplying the buffered voltage signal to an external probe. Successively larger buffer stages minimize loading on the internal analog nodes, while providing sufficient power for outputting the buffered voltage signal to the external probe.
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“AMD-3181™ HyperTransport™ PCI-X® Tunnel Data Sheet”, 24637 Rev. 3.02, Aug. 10, 2004, pp. 1-87.
Advanced Micro Devices , Inc.
Manelli Denison & Selter PLLC
Turkevich Leon R.
Wells Kenneth B.
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