Parallel RX module configuration register1.
RX_REG_UPDATE | Write 1 to update rx register configuration signals. |
RX_TIMEOUT_EN | Write 1 to enable timeout count to generate error eof. |
RX_EXT_EN_SEL | Configures rx external enable signal selection from 16 data lines. |
RX_TIMEOUT_THRESHOLD | Configures rx threshold of timeout counter. |