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US 8,796,988 B2Granted
Input-output circuit
AssigneeSemiconductor Components Industries, LLC
InventorsAtsushi Wada, Hajime Mizukami, Mitsuaki Hatakeyama, Shigeto Kobayashi
Life of this patent
Estimating the term…
Abstract
A power supply detection circuit detects power feeding to a VBUS terminal from the outside. A charger detection circuit detects the kind of charger by monitoring voltages of a DP terminal and a DM terminal. A control unit adjusts timing and instructs the charger detection circuit to start a charger kind detection process after a notification of detection of power feeding is received from the power supply detection circuit.
Claims4
An input-output circuit that connects a connector including:
- at least a power supply terminal;
- and a first data terminal and a second data terminal, which are data terminals of a differential pair, and an internal circuit to each other, the input-output circuit comprising:
- a power supply detection circuit that detects power feeding to the power supply terminal from the outside;
- a charger detection circuit that detects the kind of charger by monitoring voltages of the first data terminal and the second data terminal;
- and
- a control unit that, after a notification of detection of power feeding is received from the power supply detection circuit, adjusts timing and instructs the charger detection circuit to start a charger kind detection process.
3 more elements
Dependencies are inferred from the claim text.