Samsung Electronics Co., Ltd.

Chul Joon Choi

Sung Geun Park

Tae-Geuk Kim

Keon Han Sohn

Byung Yoon Kang

A method of operating a multi-interface memory card including a first interface supporting a universal serial bus (USB) data transfer protocol and the second interface supporting an inter-chip USB (IC-USB) data transfer protocol includes; selecting either the first interface or the second interface to facilitate data communication between the multi-interface memory card and a host connected to the multi-interface memory card via a USB connection by comparing a level of a power-on voltage received from the host with a reference voltage level, and thereafter determining whether a reset signal has been received from the host.

Multi-interface memory card and method of operation

A semiconductor device includes at least one endpoint communicating with a host, and an endpoint controller dividing each of the at least one endpoint into a majority of sub-endpoints and performing numbering to each of the divided sub-endpoints. The endpoint controller transmits a packet generated by the host to any one of the sub-endpoints.

Growing community of inventors

Sunwon-si, South Korea

Chul Joon Choi