External bus arbitration technique for multicore DSP device

Details External bus arbitration technique for multicore DSP device External bus arbitration technique for multicore DSP device

2006-02-28

2006-02-28

Chin, Wellington (Department: 2664)

Multiplex communications

Channel assignment techniques

Arbitration for access to a channel

C370S444000, C370S447000, C370S461000, C340S870030, C710S308000, C710S309000

Reexamination Certificate

active

07006521

ABSTRACT:
A digital signal processing system includes multiple processor subsystems, an external input/output port (XPORT), and an XPORT arbiter. The processor subsystems each include a processor core and a DMA controller. The XPORT arbiter arbitrates between the processor cores and between the DMA controllers, and further arbitrates between processor control or DMA control of the XPORT. Upon a request signal from a DMA controller, the XPORT arbiter asserts a hold signal to the processor cores. The processor cores respond by asserting a hold acknowledge signal. A processor core will delay the hold acknowledge signal until through with the XPORT. The arbiter, then asserts a grant signal to the DMA controller requesting access. The arbiter may assert a grant signal to a processor core requesting access. However, the processor core's access will be stalled as long as the hold signal is asserted.

REFERENCES:
patent: 5611075 (1997-03-01), Garde
patent: 5619720 (1997-04-01), Garde et al.
patent: 5684997 (1997-11-01), Kau et al.
patent: 5710911 (1998-01-01), Walsh et al.
patent: 5717440 (1998-02-01), Katsura et al.
patent: 5721933 (1998-02-01), Walsh et al.
patent: 5727221 (1998-03-01), Walsh et al.
patent: 5729720 (1998-03-01), Kau et al.
patent: 5734919 (1998-03-01), Walsh et al.
patent: 5754436 (1998-05-01), Walsh et al.
patent: 5771373 (1998-06-01), Kau et al.
patent: 5781780 (1998-07-01), Walsh et al.
patent: 5784291 (1998-07-01), Chen et al.
patent: 5822550 (1998-10-01), Milhaupt et al.
patent: 5842005 (1998-11-01), Walsh et al.
patent: 5845132 (1998-12-01), Walsh et al.
patent: 5848253 (1998-12-01), Walsh et al.
patent: 5852370 (1998-12-01), Ko
patent: 5864702 (1999-01-01), Walsh et al.
patent: 5867717 (1999-02-01), Milhaupt et al.
patent: 5872983 (1999-02-01), Walsh et al.
patent: 5875312 (1999-02-01), Walsh et al.
patent: 5943507 (1999-08-01), Cornish et al.
patent: 5987244 (1999-11-01), Kau et al.
patent: 6112273 (2000-08-01), Kau et al.
patent: 6421754 (2002-07-01), Kau et al.
patent: 6429871 (2002-08-01), Katsura et al.
patent: 6781590 (2004-08-01), Katsura et al.
patent: 2003/0001850 (2003-01-01), Katsura et al.
Texas Instruments Incorporated, TMS320VC5421 Fixed-Point Digital Signal Processor—Data Manual, Dec., 1999, pp. 34-35.
Winderweedle, Bill;TMS320VC5420 to TMS320VC5421 DSP Migration,Dec., 1999, whole document.

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