A
data transmission chip and an electronic device are provided, and belong to the field of electronic technologies. A high-speed
asynchronous serial interface is configured to: receive a first
signal from the one or two
signal lines, wherein the first
signal carries at least one low-speed signal; and transmit the at least one low-speed signal to a corresponding at least one low-speed interface, wherein a
data transmission rate of the high-speed serial interface is higher than a
data transmission rate of the at least one low-speed interface.