SPI0 user register.
CS_HOLD | spi cs keep low when spi is in done phase. 1: enable 0: disable. |
CS_SETUP | spi cs is enable when spi is in prepare phase. 1: enable 0: disable. |
CK_OUT_EDGE | the bit combined with spi_mem_mosi_delay_mode bits to set mosi signal delay mode. |
USR_DUMMY_IDLE | spi clock is disable in dummy phase when the bit is enable. |
USR_DUMMY | This bit enable the dummy phase of an operation. |