Abstract
SuperSpeed bus, also known as USB3.0 bus or SuperSpeed USB bus, is the newest USB bus technology. This paper presents an innovative DMA transfer method called Multi-thread Chain DMA for SuperSpeed bus video data transmissions. The maximum 5Gbps giant data rate of SuperSpeed bus demands a high speed and high reliability DMA method. However, traditional DMA method can not achieve this required data rate due to its separate data transmission and reception. Unlike traditional DMA method, utilizing a novel designed mechanism, Multi-thread Chain DMA transfer method transmits and receives data concurrently, achieves SuperSpeed data rate and guarantees no data loss. Furthermore, one communication protocol for SuperSpeed video transmission is designed and implemented to comply with USB Video Class (UVC) standard. The field trial has demonstrated Multi-thread Chain DMA transfer method and SuperSpeed video communication protocol in the article are feasible and rich in value of research.
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