串行数据接口 SDI ; BSD ; Serial Data Interface
通用串行总线接口数据 USB-DATA Universal Serial Bus Data ; USB-VMI
串行数字数据接口 SDDI
这个寄存器定义了将用于数据通信的物理串行接口。
This register defines the physical serial interface which will be used for data communications.
接口的波特率为31.25 k波特，其中包括1个起始位，8个数据位以及1个停止位，每个串行比特周期为320微妙。
The baud rate for the interface is 31.25 Kbaud with 1 start bit, 8 data bits, and 1 stop bit, giving a period of 320 microseconds per serialized byte.
从 Arduino 获得数据最简单的方式是让此单元直接连接到主机计算机的 Universal Serial Bus (USB) 接口，像串行连接那样读取数据。
The simplest way of getting the data from the Arduino is with the unit connected directly to a host computer Universal Serial Bus (USB) interface, reading the data as if it were a serial connection.
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