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:
Sep. 18, 2001
Filed:
Aug. 01, 2000
Applicant:
Inventor:
Eric J. Crabill, San Jose, CA (US);
Assignee:
Xilinx, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 1/9177 ; H01L 2/500 ;
U.S. Cl.
CPC ...
H03K 1/9177 ; H01L 2/500 ;
Abstract
Described are programmable routing resources capable of distributing low-skew signals along more than one edge of a programmable logic device (PLD). The PLD includes groups of input/output blocks (IOBs) arranged along each edge. A programmable signal-distribution tree can be configured to send a shared, low-skew signal to IOBs along adjacent edges. These signals are conveyed via perpendicular conductive lines that run parallel to the respective edges. Each conductive line can be programmably connected to a source of the shared signal using a respective programmable-interconnect point located near the corner of the PLD defined by the two edges.