rtc configure register
| XPD_ROM0 | rom0 power down |
| XPD_DIG_DCDC | External DCDC power down |
| PERI_ISO | rtc peripheral iso |
| XPD_RTC_PERI | rtc peripheral power down |
| WIFI_ISO | wifi iso |
| XPD_WIFI | wifi wrap power down |
| DIG_ISO | digital wrap iso |
| XPD_DIG | digital wrap power down |
| TOUCH_STATE_START | touch should start to work |
| TOUCH_STATE_SWITCH | touch is about to working. Switch rtc main state |
| TOUCH_STATE_SLP | touch is in sleep state |
| TOUCH_STATE_DONE | touch is done |
| COCPU_STATE_START | ulp/cocpu should start to work |
| COCPU_STATE_SWITCH | ulp/cocpu is about to working. Switch rtc main state |
| COCPU_STATE_SLP | ulp/cocpu is in sleep state |
| COCPU_STATE_DONE | ulp/cocpu is done |
| MAIN_STATE_XTAL_ISO | no use any more |
| MAIN_STATE_PLL_ON | rtc main state machine is in states that pll should be running |
| RDY_FOR_WAKEUP | rtc is ready to receive wake up trigger from wake up source |
| MAIN_STATE_WAIT_END | rtc main state machine has been waited for some cycles |
| IN_WAKEUP_STATE | rtc main state machine is in the states of wakeup process |
| IN_LOW_POWER_STATE | rtc main state machine is in the states of low power |
| MAIN_STATE_IN_WAIT_8M | rtc main state machine is in wait 8m state |
| MAIN_STATE_IN_WAIT_PLL | rtc main state machine is in wait pll state |
| MAIN_STATE_IN_WAIT_XTL | rtc main state machine is in wait xtal state |
| MAIN_STATE_IN_SLP | rtc main state machine is in sleep state |
| MAIN_STATE_IN_IDLE | rtc main state machine is in idle state |
| MAIN_STATE | rtc main state machine status |