Communication system and electronic device
A communication system and an electronic device are provided. The communication system includes a processing chip and two sets of communication circuits, each set of the communication circuit includes a switch circuit, a SIM card port circuit and at least one eSIM circuit, the switch circuit includes a first terminal and at least two second terminals, in which the first terminal is connected to a communication interface of the processing chip, the at least two second terminals are respectively connected to the SIM card port circuit and the at least one eSIM circuit in one-to-one correspondence, and the first terminal of the switch circuit is switched to be connected with each second terminal.
1. A communication system, comprising:
a processing chip that comprises a first communication interface and a second communication interface; and
two sets of communication circuits, wherein one set of communication circuits is connected to the first communication interface, and the other set of communication circuits is connected to the second communication interface;
wherein each set of the communication circuits comprises a switch circuit, a Subscriber Identity Module (SIM) card port circuit and at least one eSIM circuit, the switch circuit comprises a first terminal and at least two second terminals, the first terminal is connected to the first communication interface or the second communication interface, the at least two second terminals are respectively connected to the SIM card port circuit and the at least one eSIM circuit in one-to-one correspondence, and the first terminal of the switch circuit is switched to be connected with each second terminal.
2. The communication system according to claim 1 , wherein
the switch circuit further comprises a control terminal, the control terminal is connected to a control pin of the processing chip, and the switch circuit is used to switch the first terminal to be connected with a target second terminal of the at least two second terminals based on a control signal received by the control terminal.
3. The communication system according to claim 1 , wherein
the communication circuit further comprises a transformer circuit, the second terminal of the switch circuit is connected to the SIM card port circuit through the transformer circuit, and the transformer circuit is used to adjust a voltage of communication data outputted to the SIM card port circuit.
4. The communication system according to claim 3 , wherein
the transformer circuit comprises a level conversion circuit, and the level conversion circuit comprises a signal input terminal, a signal output terminal and a reference level input terminal; the signal input terminal is connected to the second terminal of the switch circuit, the signal output terminal is connected to the SIM card port circuit, and the reference level input terminal is connected to a power supply line of the SIM card port circuit; and
the level conversion circuit is used to adjust a voltage of communication data of the signal output terminal based on a power supply voltage of the SIM card port circuit.
5. The communication system according to claim 1 , wherein
the communication system is disposed on a mainboard of a mobile terminal, the eSIM circuit comprises an eSIM chip, and the eSIM chip is disposed on the mainboard near the processing chip.
6. The communication system according claim 1 , further comprising:
a power supply management circuit that comprises a first power supply terminal and a second power supply terminal, the first power supply terminal is connected to the switch circuit for supplying power to the switch circuit; and the second power supply terminal is connected to the SIM card port circuit through the switch circuit for supplying power to the SIM card port circuit.
7. The communication system according to claim 6 , wherein
the switch circuit comprises a first power input terminal and a first power output terminal, the first power input terminal is connected to the second power supply terminal of the power supply management circuit, and the first power output terminal is connected to the SIM card port circuit, and the switch circuit is used to control ON/OFF of the first power input terminal and the first power output terminal.
8. The communication system according to claim 7 , further comprising:
a near field communication (NFC) chip that comprises a second power input terminal and a second power output terminal, the second power input terminal is connected to the first power output terminal, and the second power output terminal is connected to the SIM card port circuit.
9. An electronic device, comprising a communication system, wherein
the communication system comprises:
a processing chip that comprises a first communication interface and a second communication interface; and
two sets of communication circuits, wherein one group set of communication circuits is connected to the first communication interface, and the other set of communication circuits is connected to the second communication interface;
wherein each set of the communication circuits comprises a switch circuit, a Subscriber Identity Module (SIM) card port circuit and at least one eSIM circuit, the switch circuit comprises a first terminal and at least two second terminals, the first terminal is connected to the first communication interface or the second communication interface, the at least two second terminals are respectively connected to the SIM card port circuit and the at least one eSIM circuit in one-to-one correspondence, and the first terminal of the switch circuit is switched to be connected with each second terminal.
10. The electronic device according to claim 9 , wherein the electronic device comprises a mobile terminal.
11. The electronic device according to claim 9 , wherein
the switch circuit further comprises a control terminal, the control terminal is connected to a control pin of the processing chip, and the switch circuit is used to switch the first terminal to be connected with a target second terminal of the at least two second terminals based on a control signal received by the control terminal.
12. The electronic device according to claim 9 , wherein
the communication circuit further comprises a transformer circuit, the second terminal of the switch circuit is connected to the SIM card port circuit through the transformer circuit, and the transformer circuit is used to adjust a voltage of communication data outputted to the SIM card port circuit.
13. The electronic device according to claim 12 , wherein
the transformer circuit comprises a level conversion circuit, and the level conversion circuit comprises a signal input terminal, a signal output terminal and a reference level input terminal; the signal input terminal is connected to the second terminal of the switch circuit, the signal output terminal is connected to the SIM card port circuit, and the reference level input terminal is connected to a power supply line of the SIM card port circuit; and
the level conversion circuit is used to adjust a voltage of communication data of the signal output terminal based on a power supply voltage of the SIM card port circuit.
14. The electronic device according to claim 9 , wherein
the communication system is disposed on a mainboard of a mobile terminal, the eSIM circuit comprises an eSIM chip, and the eSIM chip is disposed on the mainboard near the processing chip.
15. The electronic device according claim 9 , further comprising:
a power supply management circuit that comprises a first power supply terminal and a second power supply terminal, the first power supply terminal is connected to the switch circuit for supplying power to the switch circuit; and the second power supply terminal is connected to the SIM card port circuit through the switch circuit for supplying power to the SIM card port circuit.
16. The electronic device according to claim 15 , wherein
the switch circuit comprises a first power input terminal and a first power output terminal, the first power input terminal is connected to the second power supply terminal of the power supply management circuit, and the first power output terminal is connected to the SIM card port circuit, and the switch circuit is used to control ON/OFF of the first power input terminal and the first power output terminal.
17. The electronic device according to claim 16 , further comprising:
a near field communication (NFC) chip that comprises a second power input terminal and a second power output terminal, the second power input terminal is connected to the first power output terminal, and the second power output terminal is connected to the SIM card port circuit.