| UART | I2C | SPI | I2S | |
|---|---|---|---|---|
| Clock line(s) | — | SCL | SCK | BCLK LRCLK (MCLK) |
| Data line(s) | TX RX | SDA | MISO MOSI | SDATA |
| Control line(s) | CTS RTS | — | SS | — |
| Topology | 1:1 | Bus | Bus | 1:1 |
| Voltage | ~+5V (+1.8V, +3.3V, +5V, etc..) | |||
※GND は省略。
UART, I2C, SPI, I2S の各信号線名称の差異
※GND は省略。
※GND は省略。