Communication apparatus and communication system
AssigneeSony Semiconductor Solutions Corporation
InventorYuichi Mizutani
Life of this patent
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Abstract
A communication apparatus includes an I2C logic circuit, an I3C logic circuit, an external terminal, and a switch circuit. The I2C logic circuit controls communication via a control data bus in accordance with an I2C (Inter?Integrated Circuit) communication standard. The I3C logic circuit controls the communication via the control data bus in accordance with an I3C (Improved Inter Integrated Circuit) communication standard. The external terminal is coupled to the control data bus. The switch circuit controls coupling between one of the I2C logic circuit and the I3C logic circuit, and the external terminal.
Claims14
A communication apparatus comprising:
- an I2C logic circuit that controls communication via a control data bus in accordance with an I2C (Inter-Integrated Circuit) communication standard;
- an I3C logic circuit that controls the communication via the control data bus in accordance with an I3C (Improved Inter Integrated Circuit) communication standard;
- an external terminal coupled to the control data bus;
- a switch circuit that controls coupling between one of the I2C logic circuit and the I3C logic circuit, and the external terminal, wherein the switch circuit controls the coupling on a basis of a state value obtained from a register or a memory, controls the coupling to be to the I2C logic circuit when the state value is a first value, and controls the coupling to be the I3C logic circuit when the state value is a second value;
- and
- a power source control circuit that controls electric power supplied to the I2C logic circuit and the I3C logic circuit on a basis of the state value.
A communication system comprising:
- a control data bus;
- and
- a transmission apparatus and a reception apparatus that perform communication via the control data bus,
- the transmission apparatus including
- an I2C logic circuit that controls communication with the reception apparatus via the control data bus in accordance with an I2C (Inter-Integrated Circuit) communication standard,
- an I3C logic circuit that controls the communication with the reception apparatus via the control data bus in accordance with an I3C (Improved Inter Integrated Circuit) communication standard,
- an external terminal coupled to the control data bus,
- a switch circuit that controls coupling between one of the I2C logic circuit and the I3C logic circuit, and the external terminal, wherein the switch circuit controls the coupling on a basis of a state value obtained from a register or a memory, controls the coupling to be to the I2C logic circuit when the state value is a first value, and controls the coupling to be the I3C logic circuit when the state value is a second value;
- and
- a power source control circuit that controls electric power supplied to the I2C logic circuit and the I3C logic circuit on a basis of the state value.
Dependencies are inferred from the claim text.