Semiconductor integrated circuit for use in direct memory...

Details Semiconductor integrated circuit for use in direct memory... Semiconductor integrated circuit for use in direct memory...

2005-03-08

2005-03-08

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S028000

Reexamination Certificate

active

06865623

ABSTRACT:
A semiconductor integrated circuit for use in direct memory access (DMA) has two sources which communicate with a bus through a bus interface. A DMA access signal generator is coupled to the bus interface and asserts a DMA access output signal at a DMA access signal pin whenever either of the sources requires a DMA access. The need for separate DMA access signal pins for each of the two sources is thereby avoided. With targets on two separate integrated circuits, a single DMA access pin can be used for the two targets, while chip select signals at chip select pins on the source integrated circuit indicate which of the two targets is intended for the DMA access.

REFERENCES:
patent: 5457802 (1995-10-01), Catherwood et al.
patent: 5657288 (1997-08-01), Dent
patent: 5668815 (1997-09-01), Gittinger et al.
patent: 5903912 (1999-05-01), Hansen
patent: 6044412 (2000-03-01), Evoy
patent: 6047349 (2000-04-01), Klein
patent: 6330246 (2001-12-01), Denning et al.
patent: 20010042147 (2001-11-01), Adams et al.
patent: 0901081 (1999-03-01), None

Affiliated with

Also associated with

Rating

Semiconductor integrated circuit for use in direct memory... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor integrated circuit for use in direct memory..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor integrated circuit for use in direct memory... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3377922