CC254x external clock

Hello, it's me again.

I want to use power mode of CC254x, and need to add an external 32kHz clock

refer to AN119, there is an application circuit below

And I am not very sure about where is the other pin of the 32kHz Clock?

Do you have a Sch has more details?

无源晶振接在p2.3 和p2.4引脚！

你上边的图用的有源cmos电平方波。

thx, help a lot !