TIMERGROUP1 configuration register
| TG1_CLK_EN | Set 1 to enable timer_group1 apb clock |
| TG1_RST_EN | Set 0 to reset timer_group1 module |
| TG1_WDT_READY | Query this field after reset timer_group1 wdt module |
| TG1_TIMER0_READY | Query this field after reset timer_group1 timer0 module |
| TG1_TIMER1_READY | reserved |