SEMICONDUCTOR COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

摘要

A semiconductor communication device includes a CRC calculation portion retrieving data pieces and CRC data piece as a retrieved data piece from a data signal, and performing a cyclic redundancy check calculation to obtain a CRC calculation value according to the retrieved data piece each time when the CRC calculation portion retrieves the retrieved data piece; a comparing portion generating an end detection signal indicating that the comparing portion detects a data end portion of the data signal when the CRC calculation value matches a value indicated with a subsequently retrieved data piece subsequently retrieved after the retrieved data piece is retrieved; and a communication responding portion determining whether the command is a non-corresponding command, and transmitting a command error signal when the communication responding portion determines that the command is the non-corresponding command.

主权项

1. A semiconductor communication device configured to receive a data signal, in which a CRC (Cyclic Redundancy Check) data piece is arranged after a series of a plurality of data pieces, said data pieces representing a command, said CRC data piece representing a value calculated with a cyclic redundancy test calculation based on the data pieces, said semiconductor communication device being configured to perform transmission according to the command, said semiconductor communication device comprising:
a CRC calculation portion configured to retrieve each of the data pieces and the CRC data piece as a retrieved data piece from the data signal, said CRC calculation portion being configured to perform the cyclic redundancy check calculation to obtain a CRC calculation value according to the retrieved data piece each time when the CRC calculation portion retrieves the retrieved data piece; a comparing portion configured to generate an end detection signal indicating that the comparing portion detects a data end portion of the data signal when the CRC calculation value matches a value indicated with a subsequently retrieved data piece subsequently retrieved after the retrieved data piece is retrieved; and a communication responding portion configured to determine whether the command represented with the retrieved data piece is a non-corresponding command, said communication responding portion being configured to transmit a command error signal when the communication responding portion determines that the command is the non-corresponding command.