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:
Oct. 20, 1998
Filed:
Aug. 26, 1996
John Philip Dunn, Austin, TX (US);
Theo C Freund, Austin, TX (US);
Tony Tong-Khay Cheng, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for viewing the contents of an internal bus (112) external to a integrated circuit (100) begins by providing a integrated circuit (100) which has the internal bus (112). Internal bus is not itself accessible to the external terminals of the integrated circuit (100). When an access on the bus (112) needs to be viewed external to the integrated circuit (100), a control section (120) forces the signals/access on the bus (112) to a second slower bus (114) within the integrated circuit (100). The second bus is coupled to circuitry (160) which is coupled to external terminals so that the external terminals can be used to inspect the contents of the bus (112) by using the bus (114) as an intermediary.