| 摘要 |
PROBLEM TO BE SOLVED: To give versatility corresponding to various communication conditions and to improve developing efficiency and maintenance efficiency. SOLUTION: When power is supplied, an MPU I/F circuit 22 decides an initial communication mode as a communication protocol with MPU 5, receives communication condition information from MPU 5 through serial communication, and decodes received communication condition information. Then, it sets the frequency dividing value of an input clock frequency dividing circuit 21 based on the decoded communication condition, sets the transmission carrier frequency of a transmission carrier generation circuit 23, sets the reception carrier frequency of a reception carrier generation circuit 24, sets the communication baud rate of a communication baud rate generation circuit 25, receives information of the other modes from MPU 5 through serial communication, sets the other modes, validates whole setting and starts communication with a radio card. |
