Memory control device, semiconductor memory device, memory system, and memory control method

A semiconductor memory device comprising:

• a memory core storing therein data to be processed by an external apparatus;
• and
• processing circuitry including:
• communication protocol selection circuitry to select a communication protocol from a plurality of communication protocols having different signal transmission/reception methods, based on a command input given from the external apparatus;
• and
• data transmission circuitry to transmit, to the external apparatus, data read out from said memory core based on a read-out request given from the external apparatus, according to said communication protocol selected by said communication protocol selection circuitry,
• wherein said data transmission circuitry transmits, to the external apparatus, data in which designation information designating said selected communication protocol is added to read-out data read out from said memory core in response to the read-out request given from the external apparatus, and
• wherein said communication protocol selection circuitry selects said selected communication protocol based on said command input issued by the external apparatus based on said designation information.

A memory system comprising an information processing apparatus and a semiconductor memory device, wherein said semiconductor memory device includes:

• a memory core storing therein data to be processed by an external apparatus;
• and
• first processing circuitry including:
• communication protocol selection circuitry to select a communication protocol from a plurality of communication protocols having different signal transmission/reception methods, based on a command input given from the external apparatus;
• and
• data transmission circuitry to transmit, to the external apparatus, data read out from said memory core based on a read-out request given from the external apparatus, according to said communication protocol selected by said communication protocol selection circuitry,
• wherein said data transmission circuitry transmits, to the external apparatus, data in which designation information designating said selected communication protocol is added to read-out data read out from said memory core in response to the read-out request given from the external apparatus, and
• wherein said communication protocol selection circuitry selects said selected communication protocol based on said command input issued by the external apparatus based on said designation information.

A memory control method to control access to a memory core storing data therein, said method comprising:

• selecting a communication protocol from a plurality of communication protocols having different signal transmission/reception methods, based on a command input given from an external apparatus;
• transmitting, to the external apparatus, data read out from the memory core based on a read-out request given from the external apparatus, according to said communication protocol selected in said selecting;
• and
• transmitting, to the external apparatus, data in which designation information designating the selected communication protocol is added to read-out data read out from the memory core in response to the read-out request given from the external apparatus,
• wherein said selecting the selected communication protocol is based on said command input issued by the external apparatus based on said designation information.