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:
Jan. 14, 2014
Filed:
Mar. 20, 2012
Partha Prasun Maji, Sheffield, GB;
Steven Richard Mellor, Sheffield, GB;
Partha Prasun Maji, Sheffield, GB;
Steven Richard Mellor, Sheffield, GB;
ARM Limited, Cambridge, GB;
Abstract
A system-on-chip integrated circuitincludes a packet transmitterfor generating data packets to be sent via a communication circuitto a packet receivercontaining a buffer circuit. A transmitter counterstores a transmitter count value counting data packets sent. A receiver counterstores a receiver count value tracking data packets emptied from the buffer circuit. A comparison circuitryis used to compare the transmitter count value and the receiver count value to determine whether or not there is storage space available within the buffer circuitto receive transmission of further data packets. The packet transmitteroperates in a transmitter clock domain that is asynchronous from a receiver clock domain in which the packet receiver operates. One of the count values is passed across this asynchronous clock boundary in order that the comparison may be performed and flow control exercised.