RDF=0, TDE=0
FIFO Status Register
| RDF | Receive Data Full Flag NOTE: Since the SSIFRDR register is a 32-byte FIFO register, the maximum number of data bytes that can be read from it while the RDF flag is 1 is indicated in the RDC[3:0] flags. If reading data from the SSIFRDR register is continued after all the data is read, undefined values will be read. 0 (0): Number of received data bytes in SSIFRDR is less than the set receive trigger number. 1 (1): Number of received data bytes in SSIFRDR is equal to or greater than the set receive trigger number. |
| RDC | Receive Data Indicate Flag(Indicates the number of data units stored in SSIFRDR) |
| TDE | Transmit Data Empty Flag NOTE: Since the SSIFTDR register is a 32-byte FIFO register, the maximum number of bytes that can be written to it while the TDE flag is 1 is 8 - TDC[3:0]. If writing data to the SSIFTDR register is continued after all the data is written, writing will be invalid and an overflow occurs. 0 (0): Number of data bytes for transmission in SSIFTDR is greater than the set transmit trigger number. 1 (1): Number of data bytes for transmission in SSIFTDR is equal to or less than the set transmit trigger number. |
| TDC | Transmit Data Indicate Flag(Indicates the number of data units stored in SSIFTDR) |