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:
Aug. 16, 2005
Filed:
Sep. 28, 2001
David C. Wyland, Morgan Hill, CA (US);
David C. Wyland, Morgan Hill, CA (US);
Cradle Technologies, Inc., Sunnyvale, CA (US);
Abstract
Disclosed is a reprogrammable I/O system for a chip or board system that can be reprogrammed to simulate many I/O interfaces in firmware. The reprogrammable I/O system comprises an I/O cluster, an I/O bus, I/O pins, and logic at the I/O pins. The I/O pins are arranged logically in a row and are grouped into pin groups of eight pins. Each pin group also includes a pin state machine (PSM) and a data FIFO coupled together. Each PSM has chain connections to the two neighboring PSM's. Each data FIFO has chain connections to the two neighbor data FIFO's. The reprogrammable I/O system allows firmware to organize the I/O pins into I/O interfaces. The firmware in PSM's and the I/O cluster that control the operations of the I/O pins can be changed (reprogrammed) so that the I/O system can perform other different interfaces.