Data processing device having accelerator for digital signal pro

Details Data processing device having accelerator for digital signal pro Data processing device having accelerator for digital signal pro

1998-06-08

1999-11-16

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710260, 712 35, G06F 946

Patent

active

059875569

ABSTRACT:
A data processing device uses a processor such as a central processing unit and a special-purpose hardware circuit, such as an accelerator for accelerating the software operation using the operation program of the processor by replacing the software operation partially by the hardware. A practical application of this processor arrangement is found in mobile communication terminal devices including a digital cellular portable telephone in which a digital signal processor of a mobile communication terminal device operates in association with an accelerator for accelerating specific signal processings such as waveform equalization. The processor provides input data to the accelerator and the results of operation by the accelerator are output to a register or memory based on a cycle of operation to be read periodically by the processor. When the processor operates in association with the accelerator and is interrupted, the data output to the memory of the accelerator cannot be read by the processor and a clock control circuit is used for stopping the internal clock signal of the accelerator for stopping its operation. This avoids the potential for the operation of the accelerator to overwrite the output stored in the output register of the accelerator before it is read by the processor. The processor cannot read the output register of the accelerator while it processes an interrupt or when it loses ownership of the bus connecting the processor to the accelerator.

REFERENCES:
patent: 5121479 (1992-06-01), O'Brien
patent: 5129072 (1992-07-01), Larner et al.
patent: 5369767 (1994-11-01), Dinwiddie, Jr. et al.
patent: 5579493 (1996-11-01), Kiuchi et al.
patent: 5822553 (1998-10-01), Gifford et al.

Affiliated with

Also associated with

Rating

Data processing device having accelerator for digital signal pro 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 processing device having accelerator for digital signal pro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing device having accelerator for digital signal pro will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1338264