针脚 | 信号 | 定义 | 作用 |
1 | DCD | 载波检测 | Received Line Signal Detector(Data Carrier Detect) |
2 | RXD | 接收数据 | Received Data |
3 | TXD | 发送数据 | Transmit Data |
4 | DTR | 数据终端准备好 | Data Terminal Ready |
5 | SGND | 信号地 | Signal Ground |
6 | DSR | 数据准备好 | Data Set Ready |
7 | RTS | 请求发送 | Request To Send |
8 | CTS | 清除发送 | Clear To Send |
9 | RI | 振铃提示 | Ring Indicator |
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