Can it be OK to request to enter standby mode during communication?
A1 Even if a request is made to enter standby mode during communication, standby mode cannot be entered unless communication is completed and the system is in the carrier sense state. Also, if a request is made to enter standby mode during communication, internal registers are banned to be read via serial I/O until the LSI actually enters standby mode. Therefore, you should not requesting to enter standby mode during communication.