Slave device, communication system, imaging device, master device, and data communication method

Abstract

Provided is a slave device that performs data communication with a master device via a bus. The slave device includes: an ID storage unit that stores an ID; and a communication unit that receives a control signal, including address information indicating a common address for the plurality of slave devices, specifying information specifying at least one slave device targeted for data communication, and data length information, and, in response to the specifying information in which its own slave device is not selected, determines not to communicate with the master device, and, in response to the specifying information in which its own slave device is selected, decides an order of the slave device to read or write data with a data length indicated in the data length information from/to a register of the slave device according to the ID and the specifying information.