SPBYT=0, SPLW=0, SPRDTD=0, SPFC=00
SPI Data Control Register
| SPFC | Number of Frames Specification 0 (00): 1 frame 1 (01): 2 frames 2 (10): 3 frames 3 (11): 4 frames. |
| SPRDTD | RSPI Receive/Transmit Data Selection 0 (0): SPDR values are read from the receive buffer 1 (1): SPDR values are read from the transmit buffer (but only if the transmit buffer is empty) |
| SPLW | SPI Word Access/Halfword Access Specification 0 (0): SPDR_HA is valid to access in halfwords 1 (1): SPDR is valid (to access in words). |
| SPBYT | SPI Byte Access Specification 0 (0): SPDR is accessed in word or longword (SPLW is valid) 1 (1): SPDR is accessed in byte (SPLW is invalid) |