Chapter 11 Serial Interface 0, 1XI - 24 OperationSCnCE1 Received data input edgeTransmission data output edge10Table 11-3-2 Transmission Data Output Edge and Received Data Input EdgeInput Edge / Output Edge SetupThe SCnCE1 to 0 flag of the SCnMD0 register set an output edge of the transmission data, an input edgeof the received data. As the SCnCE1 flag = "0", the transmission data is output at the falling edge, and as"1", output at the rising edge. As SCnCE1="0", the received data is received at the inversion edge to theoutput edge of transmission data, and as "1", stored at the same edge.Continuous CommunicationThis serial has a function for continuous communication. If data is set to the transmission data bufferTXBUFn during communication, the transmission buffer empty flag SCnTEMP is automatically set tocommunicate continuously. Data setup to TXBUFn should be done till the communication completeinterrupt SCnTIRQ is generated after the former data is set. At master communication, there is a sus-pension of communication for 3 transfer clocks till the next transmission clock is output after the SCnIRQgeneration.Also, the built-in automatic data transfer fuction ATC can activate. Data can be transfered continuouslyup to 255 bytes by ATC activation. In this case, there is a suspension of communication for up to 18machine cycles + 2.5 transfer clocks. Refer to the transfer mode 8 to 9 in chapter 15, automatic transfercontroller for ATC activation.Transmission/reception data polarity switchingPolarity of transmission/reception data can be switched by register setup. When SCnREN flag of theSCnMD0 register is set to "1", inverted input signal from data input pin is input to the reception shiftregister. When SCnTRN flag of the SCnMD0 register is set to "1", inverted signal set in the transferbuffer TXBUFn is output to the data output pin.
