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. 02, 2004
Filed:
Apr. 06, 2000
David C. Wyland, Morgan Hill, CA (US);
Cradle Technologies, Inc., Mountain View, CA (US);
Abstract
An integrated multi-processor system with clusters of processors on a high speed split transaction bus uses a transaction acknowledge (TACK), by a target device in response to receiving a request from a master device on the bus. The master and target devices connect to the bus via a global bus interface with FIFO registers acting as buffers, and the target interface includes a TACK generator that flips the state of the global bus' TACK line upon determining that a broadcast request is addressed to its target device. A bus idle default device (BIDD) generates a TACK signal when no device is on the bus, and also detects the absence of any TACK response by monitoring the state of the TACK line, thereby indicating that a master device bus attempted to address a nonexistent target a device. The BIDD then generates a dummy response for the requesting master device with data flags set to invalid data.