ok mode register desc looks quite poor 
```

PLL_MODE ADDRESS 0x0000 RW
PLL_MODE RESET_VALUE 0x00000000
	PLL_LOCK_DET BIT[31]
	PLLTEST BIT[3]
	RESET_N BIT[2]
	BYPASSNL BIT[1]
	OUTCTRL BIT[0]

```