Smart retry mechanism to program the retry latency of a PCI init

Details Smart retry mechanism to program the retry latency of a PCI init Smart retry mechanism to program the retry latency of a PCI init

1997-07-14

1999-03-16

Ray, Gopal C.

G06F 1314, G06F 1336

Patent

active

058840524

ABSTRACT:
The present invention comprises a smart retry system for a PCI (peripheral component interconnect) agent in a PCI bus system. The system of the present invention includes an initiator PCI agent and a retry delay register coupled to the initiator PCI agent. The initiator PCI agent is adapted to couple to a PCI bus to communicate with a target PCI agent, via the PCI bus, by initiating a data transaction. The retry delay register is coupled to the PCI agent and the PCI bus. The retry delay register is adapted to receive a delay input via the PCI bus. The delay input describes a latency period of the target PCI agent, wherein the latency period is the amount of the delay. The retry delay register couples the delay input to the initiator PCI agent such that the initiator PCI agent initiates a retry at the expiration of the latency period of the target PCI agent in order to efficiently execute an access to the target PCI agent.

REFERENCES:
patent: 4281380 (1981-07-01), DeMesa, III et al.
patent: 5227775 (1993-07-01), Bruckert et al.
patent: 5717872 (1998-02-01), Whittaker
patent: 5771235 (1998-06-01), Tang et al.

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