| 摘要 |
PROBLEM TO BE SOLVED: To provide a control system, using a serial peripheral interface (SPI), having a simpler system configuration considering application use, and capable of properly assuring reliability of data transmitted from a master control unit to a slave control unit.SOLUTION: An data output terminal DMO, a data input terminal DMI, a clock signal output terminal CO and a first slave selection signal output terminal SO1, of a master ECU (Control unit) 1 are connected to data input terminals DSI, data output terminals DSO, clock signal input terminals CI, and slave selection signal input terminals SI of slave ECUs 11 and 12, respectively via a MOSI line, a MISO line, a CLK line, and a SS1 line. The number of output terminals of the master ECU 1 can be reduced since one slave selection signal output terminal is sufficient for supporting the slave ECUs 11 and 12 having common functions.SELECTED DRAWING: Figure 1 |
