SPI0 misc register
| TRANS_END | The bit is used to indicate the spi0_mst_st controlled transmitting is done. |
| TRANS_END_INT_ENA | The bit is used to enable the interrupt of spi0_mst_st controlled transmitting is done. |
| CSPI_ST_TRANS_END | The bit is used to indicate the spi0_slv_st controlled transmitting is done. |
| CSPI_ST_TRANS_END_INT_ENA | The bit is used to enable the interrupt of spi0_slv_st controlled transmitting is done. |
| CK_IDLE_EDGE | 1: spi clk line is high when idle 0: spi clk line is low when idle |
| CS_KEEP_ACTIVE | spi cs line keep low when the bit is set. |