HMC1044 SPI configuration

Hi,

The datasheet is not clear how to configure the HMC1044 and it's not very easy as this chip is write only.

Description of SPI link with 9 bits data, 4 bits reg_addr and 3 bits chip_addr :

Next page, description of unique register :

I think I have to write directly the 16bits reg value but can you confirm ?

Thanks,
Stéphane