Data processor with block transfer control

Details Data processor with block transfer control Data processor with block transfer control

2002-09-30

2008-08-19

Nguyen, Than (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S118000

Reexamination Certificate

active

07415576

ABSTRACT:
A data processor arranged so that a block transfer control unit (12) can initiate block transfer in response to the execution of a particular instruction by a CPU, in order to increase the speed and efficiency of the data transfer between a CPU-accessible internal memory (5) and an external memory (25,26). When an address specified by the addressing field coincides with an address mapped to the internal memory, the particular instruction sets a logical address as one of the transfer source or transfer destination addresses of the data block transfer. The internal memory is allotted to a part of virtual address space; the internal memory allotted so is associated with the physical address space, to which the external memory set as the other address is allotted, by a process in which a TLB is used when the MMU is in ON, and a given register is used when the MMU is in OFF.

REFERENCES:
patent: 6285743 (2001-09-01), Kondo et al.
patent: 6389527 (2002-05-01), Raam et al.
patent: 6772295 (2004-08-01), Spencer et al.
patent: 6801988 (2004-10-01), Nagayasu
patent: 6925547 (2005-08-01), Scott et al.
patent: 0 952 428 (1999-10-01), None
patent: 4-195448 (1992-07-01), None
patent: 10-63502 (1998-03-01), None
patent: 2000-231549 (2000-08-01), None
patent: 2000-231550 (2000-08-01), None
M. Ishikawa et al., “A Methodology of Low Power On-Chip Memory Access in Embedded Microprocessor for Mobile Applications,” The Institute of Electronics, Information and Communication Engineers, vol. 102, No. 234 (ICD2002 35-45), Jul. 18, 2002, pp. 1-6.
SH7750 Programming Manual, Hitachi, Ltd., published Apr. 1998, pp. 4-9, 10-128, and 10-130.

Affiliated with

Also associated with

Rating

Data processor with block transfer control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data processor with block transfer control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processor with block transfer control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3993638