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:
May. 18, 2004
Filed:
Jan. 03, 2001
Mark D. Hummel, Franklin, MA (US);
Gerald R. Talbot, Concord, MA (US);
Alliance Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A low latency method of synchronizing asynchronous data to a core clock in a receiving device. A communication referenced to a transmitting clock that is asynchronous to the core clock is received at a receiving device. The communication includes a synchronization signal which is propagated through a synchronizer in the receiving device to synchronize the signal to the core clock. Upon receipt of the synchronization signal by the synchronizer, a load pointer for loading received data into a buffer synchronous with the transmitting clock is reset. Upon completion of the propagation of the synchronization signal through the synchronizer, an unload pointer for unloaded the data from the buffer synchronous with the core clock is reset. The unload pointer is then offset by an amount that compensates for the delay incurred while the synchronization propagated through the synchronizer. Thereafter, the position of the unload pointer is dynamically adjusted based on the accumulated amount of data loaded into the buffer and the accumulated amount of data unloaded from the buffer.