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. 14, 2013
Filed:
Jul. 21, 2010
James J. Murray, Los Gatos, CA (US);
Ting LU, Austin, TX (US);
James J. Murray, Los Gatos, CA (US);
Ting Lu, Austin, TX (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
A data bus interface channel controller circuit for an N-bit data bus is described. A FIFO command queue is coupled to receive and buffer one or more commands formatted for M-bit transactions. A FIFO data queue is coupled to receive and buffer N-bit formatted data packets. A first translation circuit is coupled to the FIFO command queue and configured to translate the each commands into a selected one of a plurality of transaction formats. A transmission control circuit is coupled and configured to receive and transmit commands removed from the FIFO command queue. The transmission control circuit is configured to track a number of outstanding transmitted commands and, in response to receiving a command having a transaction format different from the previously received command, delay transmission of commands on the N-bit data bus until the number of outstanding transmitted commands equals zero.