Bus Access Control via Master-Specific Response Timing

The patent applies local quality by differentiating response timing based on the specific master device making the request. The slave device identifies the requesting master device and provides customized response timing - early response for masters that don't require coherency (like DMA controllers) and later response for masters that do (like processors). This resolves the contradiction by making response timing device-specific rather than uniform across all masters.

The patent implements dynamics by making the response timing flexible and adaptive rather than fixed. The slave device dynamically adjusts response timing based on identification of the requesting master device. This allows the system to switch between early response (for performance) and later response (for coherency) depending on the specific master device, thereby resolving the static contradiction between speed and reliability.

The patent applies local quality by providing different response timing treatments to different master devices. Instead of uniformly applying non-posted transfer to all masters (which would degrade overall performance), the system identifies specific masters that require coherency and applies later response timing only to them. Masters that don't require coherency receive early response timing, maintaining high transfer performance while ensuring data consistency where needed.

The patent implements dynamics by making response timing adaptive to the specific master device. The slave device dynamically determines whether to provide early or later response based on identification of the requesting master. This dynamic adjustment allows the system to maintain data coherency for processors while preserving transfer performance for other masters, resolving the contradiction between reliability and speed.

The patent applies self-service by enabling the slave device to automatically identify the requesting master device and autonomously determine appropriate response timing. The system uses built-in identification mechanisms (such as address decoding or device identifiers) to recognize the master device type and self-adjust response timing without external control logic. This maintains relatively simple device architecture while achieving optimized transfer performance for different masters.

The patent implements parameter changes by varying the response timing parameter based on the identified master device. The slave device changes the response timing parameter (early vs. later response) according to the specific master making the request. This parameter-based differentiation allows the system to optimize transfer performance for different masters without requiring complex structural modifications, resolving the contradiction between productivity and device complexity.