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:
Jan. 15, 2019
Filed:
Mar. 28, 2016
Freescale Semiconductor, Inc., Austin, TX (US);
Rajan Srivastava, Noida, IN;
Girraj K. Agrawal, Noida, IN;
NXP USA, INC., Austin, TX (US);
Abstract
An integrated circuit (IC) having multiple cores controls write access to its input/output (I/O) pins. The IC includes a pin-control circuit, a memory, and a set of I/O pins. The pin-control circuit allows a core to independently control individual ones of the I/O pins. A set of pin-control values are defined that correspond to the set of I/O pins to indicate a type of core that can access an I/O pin. The pin-control circuit receives the pin-control values, a source ID, and write data generated by a core, and updates a pin data bit stored in the memory with a corresponding bit of the write data when the core is allowed to access the I/O pin. The pin-control circuit does not change the pin data bit when the core is denied write access to the I/O pin.