rtc configure register
| RESET_POR_FORCE_PD | force no bypass i2c power on reset |
| RESET_POR_FORCE_PU | force bypass i2c power on reset |
| GLITCH_RST_EN | enable glitch reset |
| SAR_I2C_PU | PLLA force power up |
| PLLA_FORCE_PD | PLLA force power down |
| PLLA_FORCE_PU | PLLA force power up |
| BBPLL_CAL_SLP_START | start BBPLL calibration during sleep |
| PVTMON_PU | 1: PVTMON power up |
| TXRF_I2C_PU | 1: TXRF_I2C power up |
| RFRX_PBUS_PU | 1: RFRX_PBUS power up |
| CKGEN_I2C_PU | 1: CKGEN_I2C power up |
| PLL_I2C_PU | power up pll i2c |