Diodes Incorporated has released the dual-role PI3USB9201 USB BC 1.2 detector, which includes both host and client circuits, enabling designers to optimize the BoM size and optimize it for portable computers, smartphones, tablets, drones, and portable computers The cost of adding USB Type-C interface circuits to other devices. home appliances.
Unlike current market solutions that require devices dedicated to each host or client mode, this device enables developers to fully support the reversible and bidirectional flexibility of the USB Type-C interface with a single chip.
The device reports the test results to the system through the 1MHz I2C interface. The four-pin selectable slave address helps avoid bus collisions.
When configured as a host, according to BC 1.2, the PI3USB9201 broadcasts device status in the form of SDP, CDP, or DCP via the USB D + / D- pins. As a client, the device monitors the D + / D- pins to detect the type of host connected.
The device highlights the differential pass-through USB switch, which supports USB switch pass-through in host mode, allowing the system to be woken up with a mouse or keyboard. Other features include a wide supply voltage range from 2.7V to 5.5V, which provides reliable operation in battery-powered equipment and provides energy-saving currents of less than 1μA in shutdown mode.
