DM648 SPI Module ***/2 can be set or clear in normal state not in communication progress?

Hello, can you help me?

1、DM648 SPI Module ***/2 can be set or clear in normal state not in communication progress, in other words, I want to set or clear the ***/2 like GPIO Pin, is it possible?

2、I have another problem after this question，thank you for your reply.