采用自顶向下的设计方法，用原理图和VHDL语言这两种输入对串行通信接口芯片进行设计。
The serial communication interface chip design was realized by application of schematic diagram and VHDL language.
控制卡通过单片机对USB通信接口芯片的控制，实现PC计算机与控制卡通过USB接口的通信。
With the USB interface chip controlled by microcontroller, the communication between the card and PC is achieved.
选择的通信接口芯片允许多达128个同样的接口芯片接在同一总线上，为多机通信的实现提供了极大的方便。
It allows 128 interface ICs to connect with each other on one bus, which makes it easy to use the card in multi-computer system.
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