> I always thought it should be called USRT when strictly synchronous, but indeed, everyone else called it USART, so I called it the "USART controller" Because

> I always thought it should be called USRT when strictly synchronous, but indeed, everyone else called it USART, so I called it the "USART controller" Because the chips that do synchronous serial IME also do asynchronous, hence USART. Which makes sense: asynchronous is a far more widely accepted and used protocol, so one chip-placement covers connecting to those devices as well.