Memory system and method for setting data transmission speed between host and memory card

摘要

A memory system includes a host and an electronic circuit card that can be inserted into the host and electrically connected to the host. If the electronic circuit card is inserted into the host, the host transfers transmission speed information to the electronic circuit card. If transmission speed information received from the host specifies a transmission speed that is identical to a transmission speed of the electronic circuit card, the electronic circuit card transfers a response signal to the host. The host generates a command signal for initializing the electronic circuit card after setting a transmission speed.