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. 13, 1997
Filed:
Oct. 03, 1994
Joan S DeLuca, Boca Raton, FL (US);
Barry W Herold, Boca Raton, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for full duplex communication between master and slave devices (403, 422) coupled by a serial peripheral interface (420) includes the steps of the slave device (422) updating a status register (421) based upon an event, after which the slave device (422) transmits a communication request to the master device (403). When the master device (403) thereafter takes the slave-select line low to initiate communication, the slave device (422) automatically transmits the contents of the status register (421) over the master-in-slave-out line. At the same time, the master device (403) transmits an 'empty' byte of information over the master-out-slave-in line.