发明申请
- 专利标题： Data Transmission Methods and Universal Serial Bus Host Controllers Utilizing the Same
- 专利标题（中）： 数据传输方法和通用串行总线主机控制器
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申请号： US12872526申请日： 2010-08-31
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公开(公告)号： US20110119557A1公开(公告)日： 2011-05-19
- 发明人: Xingchen Chen , Jiin Lai , Di Dai , Shanna Pang
- 申请人： Xingchen Chen , Jiin Lai , Di Dai , Shanna Pang
- 申请人地址： TW Hsin-Tien
- 专利权人： VIA TECHNOLOGIES, INC.
- 当前专利权人： VIA TECHNOLOGIES, INC.
- 当前专利权人地址： TW Hsin-Tien
- 优先权： CN200910222079.1 20091113
- 主分类号： G06F11/08
- IPC分类号： G06F11/08 ; G06F13/28
摘要：
A data transmission method for a universal serial bus (USB) host controller is provided. First, input data is received. A cyclic redundancy check (CRC) result of the input data is calculated, and, simultaneously, the input data is transmitted to a system memory of a host. Then, it is determined whether the input data is the last input data of a data packet. When it is determined that the input data is the last input data of the data packet, the CRC result of the last input data of the data packet is calculated. Thus, the CRC result of the data packet is accumulated. The accumulated CRC result is combined with the last input data, and transmitted the combination to the system memory of the host.