Processing circuit with multiple power supply ports and electronic device

A processing circuit with multiple power supply ports, comprising N power supply ports, a first-level power supply, N middle transmission modules, and a charging protocol control module, wherein N is an integer larger than or equal to 2;

• the middle transmission module is connected between the first-level power supply and a corresponding power supply port, at least one of the middle transmission modules is used as a second-level power supply, and the charging protocol control module is respectively connected to the first-level power supply, the N power supply ports, and the N middle transmission modules;
• the second-level power supply operates in a switching power mode or a pass through mode;
• wherein in the switching power mode, an output voltage of the second-level power supply is less than an input voltage received by the first-level power supply, and the output voltage of the second-level power supply is adjustable;
• wherein in the pass through mode, an output voltage of the second-level power supply matches an input voltage received by the first-level power supply, and the output voltage of the second-level power supply is not adjustable;
• wherein when a 1st second-level power supply of at least one second-level power supply is connected to a first device that needs electricity through the corresponding power supply port and the remaining middle transmission modules are not connected to a device that needs electricity through the corresponding power supply ports, the charging protocol control module controls the 1st second-level power supply to operate in the pass through mode and adjusts an output voltage of the first-level power supply according to power supply requirements of the first device.