The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2003
Filed:
Aug. 12, 1997
Donald H. St. Pierre, Jr., Campbell, CA (US);
Edwin W. Resler, San Jose, CA (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
An interface board and inserted modular IC interface cards allows variable length boundary scan chains. The chain can be constructed of any type of programmable integrated circuit (IC) in any order. The interface board contains a plurality of JTAG interfaces that respectively mate with standard adapter interfaces located on the modular IC interface cards. If less than the maximum number of modular IC interface cards are inserted into the interface board, a terminator card is inserted into the standard interface following the last modular IC interface card of the chain. The last test data output signal of the chain is routed back to a connector of the interface board. The interface board includes an output cascade connector that couples with an input cascade connector of another interface board so that any number of interface boards can be cascaded in series to expand the boundary scan chain.