arm cm4 intergration question

In CORTEXINTEGRATION.v, there are two ports SLEEPHOLDREQn and SLEEPHOLDACKn. my question is, how to use them when integrating the cm4 into a SOC chip? can the cm4 go into the sleep mode when asserting SLEEPHOLDREQn by SOC? and how does the cm4 jump