Sleep problem with DW1000

Wireless Connectivity Ultra-Wideband
1

Hi：
Before enter sleep mode，it work well as ranging， but enter sleep and wakeup success， it not working properly.
Is it because which register is not modified correctly?
Thanks
Best Regards

2

I use the example 01b to test sleep mode， it also have problem.
it wake up success, but after send data the register SYS_STATUS_ID’s value is always 0x800072.