FTDI released the FT311D USB host IC for easy communication with Android devices. It features 7 GPIOs, one I2C peripheral, one UART, one SPI, and 4 PWM peripherals.
The device acts as a USB host to an Android device, while the Android’s app directly controls the peripherals on the IC. The device is configurable trough 3 CFG pins. [via]
FT311D USB host IC provides easy communication with Android devices - [Link]