Patent ID: 7237049

Claim:
A Multimedia (MMC)/Secure Digital (SD) form-factor compliant card apparatus comprising: an internal switching circuit connected to pins of the card apparatus and configured to provide/receive signals to/from the pins based on a type of host connected to the pins; a memory controller configured to store/retrieve data in a non-volatile memory; an MMC controller connected to the internal switching circuit and to the memory controller and configured to receive/provide data from/to the host according to an MMC standard; a USB controller circuit connected to the internal switching circuit and to the memory controller and configured to receive/provide data from/to the host according to a USB standard; and a mode determining circuit connected to first and second pins of the card apparatus and configured to enable the internal switching circuit according to the type of the host and configured to enable the MMC controller or the USB controller based on comparing voltages at the first and second pins to an internal voltage level.