Method and apparatus for improving time constraints and extending limited length cables in a multiple-speed bus

摘要: A system and method are disclosed providing for broadened time constraints under USB 2.0 protocol, enabling extended cable spans, in addition to other benefits. The present invention one embodiment utilizes ‘split transactions’ take advantage of the relaxed latency requirements this scheme, utilizing 80/20 transaction ratio microframes. Another improves timing by a delay between start splits complete equal some number, ‘N’, further takes fact that 2.0, no can span from frame next, freeing extra microframe per virtue phase shifting slave device into appropriate synchnronization. Lastly, an full (eight microframes).