SPI transmission for ADUC7061

Question

Hi Team, 
 It seems that t he SPI on the ADuC7xxx is designed for 8-bit transfers only. But there are 4-byte receive and transmit FIFOs. 
 So if 20bytes data is needed to transmit, will these data be needed to send 4 times?

Karl.O · Accepted Answer

Hi, 
 The receive and transmit FIFO is a buffer that holds the incoming and outgoing data. 
 Data to be sent is first loaded into the transmit FIFO before being sent out. 
 If there are 20bytes of data needed to be transmitted, the data would be loaded to the buffer and then sent out 1 byte at a time. 
 Regards, 
 Karl)

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SPI transmission for ADUC7061