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:
Dec. 18, 2007
Filed:
Jun. 04, 2003
Tatsuo Nishino, Kodaira, JP;
Toru Ichien, Higashiyamato, JP;
Gou Teshima, Kodaira, JP;
Hiromichi Ishikura, Kodaira, JP;
Jyunji Ishikawa, Higashiyamato, JP;
Tatsuo Nishino, Kodaira, JP;
Toru Ichien, Higashiyamato, JP;
Gou Teshima, Kodaira, JP;
Hiromichi Ishikura, Kodaira, JP;
Jyunji Ishikawa, Higashiyamato, JP;
Renesas Technology Corp., Tokyo, JP;
Renesas Northern Japan Semiconductor, Inc., Hokkaldo, JP;
Hitachi Engineering Co., Ltd., Ibaraki, JP;
Abstract
A data processor including a central processing unit and a data transfer control unit is disclosed. The data transfer control unit has an address register for storing a transfer address. The data transfer control unit transfers data according to a transfer unit size selected from a plurality of transfer unit sizes. If the address register contains an odd address as an initial value, the data transfer control unit transfers data according to a different transfer unit size that is smaller than the selected transfer unit size. If the data transfer control unit determines that a remaining quantity of data to be transferred is smaller than the selected transfer unit size, the selected transfer unit size is switched to a smaller transfer unit size selected from the plurality of transfer unit sizes.