对照数据手册的时序要求优化硬件逻辑设计，解决了双核嵌入式处理器TMS320 VC 5471和USB芯片PDIUSBD12时序不兼容的问题。

We have optimized the hardware logic according to the timing requirement on datasheet, and solved the timing incompatibility between the dual-core processor TMS320VC5471 and the USB chip PDIUSBD12.

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