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. 06, 2014
Filed:
Sep. 02, 2011
David S. Warren, Campbell, CA (US);
David S. Warren, Campbell, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An apparatus includes a first unit and a second functional units operating in a master-slave configuration. The first and second functional units operate as a master and slave, respectively. The first functional unit conveys clock and framing signals to the second functional unit. The second functional unit includes a buffer and a multiplexer having inputs coupled to the buffer. Digital audio data may be prefetched into the buffer. When a controller of the second functional unit detects assertion of the framing signal, it may cause a change of state to a selection signal provided to the multiplexer. Responsive thereto, the multiplexer selects an input coupled to receive, from the buffer, a next frame of data to be transmitted. A first bit of the frame is transmitted to the first functional unit on the same clock cycle in which assertion of the framing signal was detected.