The invention relates to the technical field of
sound card design, and particularly discloses a
sound card driving compatible circuit,
sound card equipment and a driving method. The circuit comprises an audio coding and decoding
chip and a main controller, a first end of the audio coding and decoding
chip is connected with the earphone socket, a second end is connected with the
audio power amplifier, a third end is connected with a first end of the main controller, a fourth end and the main controller are connected with an external controller, and the main controller is connected with the
audio power amplifier. The audio coding and decoding
chip acquires a
system kernel of an external
system detected by the external controller and then generates a kernel judgment
signal, and when an earphone is not inserted into the earphone socket, generates a power
amplifier power supply starting
signal and transmits the power amplifier power supply starting
signal to the main controller; and when receiving the power amplifier power supply starting signal, the main controller generates a power amplifier driving signal according to the level state of the kernel judgment signal so as to control the power amplifier driving signal to drive the
audio power amplifier to be started. Logic judgment is carried out through two kinds of heterogeneous data to control the on-off state of the
audio power amplifier, and compatibility of different systems is achieved.