Method and apparatus for swapping state data with scan cells
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 2004
Grant Date -
N/A
app pub date -
Jun 30, 2000
filing date -
Jun 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An enhanced scan chain architecture includes scan cells capable of holding two sets of state data associated with the functional blocks, or 'modules,' of a system (e.g., an integrated circuit, a multi-chip module, a printed circuit board, and the like), thereby rendering state data associated with a module accessible. The scan chains are employed, during normal operation, to manage (e.g., save, restore, swap, etc.) state data during multi-tasking and/or testing. Control logic redirects the input of the chain, or selected portions thereof, to a source of saved state when initiating or restoring a task; and/or redirects the output of the chain, or selected portions thereof, to a storage source when one task is interrupted and/or another task is resumed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully