Timer group clock gate register
| ETM_EN | enable timer’s etm task and event |
| WDT_CLK_IS_ACTIVE | enable WDT’s clock |
| TIMER_CLK_IS_ACTIVE | enable Timer 30’s clock |
| CLK_EN | Register clock gate signal. 1: Registers can be read and written to by software. 0: Registers can not be read or written to by software. |