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:
Jun. 12, 2007
Filed:
Oct. 24, 2002
Rachael J. Parker, Forest Grove, OR (US);
Gregory M. Iovino, Hillsboro, OR (US);
Rachael J. Parker, Forest Grove, OR (US);
Gregory M. Iovino, Hillsboro, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A JTAG-compatible device includes a unique identifier stored in dedicated non-volatile memory, a test access port (TAP) controller, a TAP instruction register, a dedicated data register, and a comparison block. The TAP instruction register enables and/or disables TAP instruction execution by the device. The dedicated data register is of a length that is the same or a subset of the length of the unique identifier. The comparison block can be an arithmetic logic unit (ALU) or other circuitry that compares a code scanned into the dedicated data register with the unique identifier stored in a PROM. The TAP controller can selectively ignore TAP commands if a code scanned into dedicated data register does not match the stored unique identifier. This allows the TAP controller to conditionally or independently control several devices that are connected in parallel. The unique identifier can be device-specific, device type-specific, and/or device configuration specific.