TMS320F28075: writing CAN_IF1CMD/CAN_IF2CMD register

I've installed on my PC the package C2000Ware_1_00_00_00 (C2000Ware 1.0.0.0) and in c2000\C2000Ware_1_00_00_00\driverlib\f2807x\driverlib\can.c I've seen that CAN_IF1CMD/CAN_IF2CMD register is written in two different code lines.
In the first line only 31-16 bits are written, i.e. configuration bits. In the second line MSG_NUM is written to trigger the transfer between IFx registers and message box.

Can I write IFx command register with a single 32-bit write instruction? That is can I set configuration bits and trigger the transfer simultaneously?

Thanks.