Apparatus, system, and method for resetting an inter-integrated circuit data line using a negative voltage

摘要

An apparatus, system, and method are disclosed for resetting an inter-integrated circuit (I2C) data line with negative voltage. A hang detection module detects an I2C hung line selected from a data line and a clock line wherein an I2C bus master and I2C bus slave communicate over the data line and the clock line. In response to the detected hung line, a negative voltage generator drives the data line to a specified negative voltage for a specified time interval. A clamp diode clamps the voltage of the data line to greater than a specified limit. On receiving the specified negative voltage, a voltage detector module detects the specified negative voltage of the data line. A timer module detects the specified negative voltage for the specified time interval. In response to detecting the specified negative voltage for the specified time interval, a reset module resets the I2C bus slave.