| 摘要 |
Disclosed are a signal output method and apparatus based on an I/O interface, which are used to improve stability of a chip product. In the embodiments of the present invention, the I/O interface is disposed in a first chip, the first chip is provided with a Core power domain, and the first chip and the second chip are connected in a communication manner. The method comprises: determining whether a voltage output by the Core power domain is lower than a preset threshold voltage of the first chip; if the voltage output by the Core power domain is lower than the threshold voltage, generating a first level signal according to a control function of the first chip on the second chip, the first level signal being used to render the second chip in an ignorant state after receiving the first level signal; sending the first level signal to the second chip through the I/O interface, wherein when the second chip enters the ignorant state, the second chip ignores a control signal and a data signal sent by the first chip. |
