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:
Nov. 25, 2003
Filed:
Jun. 26, 2000
David A. Comisky, Plano, TX (US);
Iain Robertson, Bedfordshire, GB;
Sanjive Agarwala, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An external direct memory access unit includes an event recognizer recognizing plural event types, a priority encoder selecting for service one recognized external event, a parameter memory storing service request parameters corresponding to each event type and an external direct memory access controller recalling service request parameters from the parameter memory corresponding to recognized events and submitting them to a centralized transaction processor. The service request parameters include a priority for centralized transaction processor independent of the event recognition priority. The service request parameters may be stored in the form of a linked list. The service requests are preferably direct memory accesses which may include writes to the parameter memory for self modification. The centralized transaction processor may signal an event to event recognizer upon completion of a requested data transfer.