configure RTC PAD17
| PDAC1_DAC | PDAC1_DAC |
| PDAC1_XPD_DAC | PDAC1_XPD_DAC |
| PDAC1_DAC_XPD_FORCE | 1: use reg_pdac1_xpd_dac to control PDAC1_XPD_DAC,0: use SAR ADC FSM to control PDAC1_XPD_DAC |
| PDAC1_FUN_IE | input enable in work mode |
| PDAC1_SLP_OE | output enable in sleep mode |
| PDAC1_SLP_IE | input enable in sleep mode |
| PDAC1_SLP_SEL | 1: enable sleep mode during sleep,0: no sleep mode |
| PDAC1_FUN_SEL | PDAC1 function sel |
| PDAC1_MUX_SEL | 1: use RTC GPIO,0: use digital GPIO |
| PDAC1_RUE | PDAC1_RUE |
| PDAC1_RDE | PDAC1_RDE |
| PDAC1_DRV | PDAC1_DRV |