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. 03, 2009
Filed:
Mar. 16, 2007
James B. Anderson, Santa Cruz, CA (US);
Sean W. Kao, Pasadena, CA (US);
Arifur Rahman, San Jose, CA (US);
James B. Anderson, Santa Cruz, CA (US);
Sean W. Kao, Pasadena, CA (US);
Arifur Rahman, San Jose, CA (US);
XILINX, Inc., San Jose, CA (US);
Abstract
A hardware stack (HSTACK) structure using programmable logic can include a look-up table (LUT) random access memory (RAM) circuit and circuitry within the LUT RAM circuit for propagating data upwards and downwards. The hardware structure can be arbitrarily assembled into a larger structure by adding stacks to a top portion, a bottom portion, or a portion between the top portion and the bottom portion. The hardware stack structure can further include a virtual stack (VSTACK) structure coupled to the HSTACK structure within a field programmable gate array (FPGA) fabric. The VSTACK can be arranged in the form of an appended peripheral memory and cache control for virtual extension to an HSTACK address space. The hardware stack structure can further include an auxiliary reset circuit.