XMC4500: how to force CCU slices to their passive levels?

Hi,

I am working on a motor control application where I am using one of the CCU8 units in the XMC4500 as follows:

- Slice 0-2: complementary PWM outputs
- Slice 3: ADC and interrupt (field-oriented controller) trigger

Sometimes it's a good idea to initiate freewheeling, e.g., when the controller measures unreasonably high phase currents or any other unrecoverable errors. Freewheeling is a simple way to stop the motor in a safe way. Currently, the only way I can freewheel is by the PWM outputs themselves; by setting all of them to their passive levels, i.e., I don't have a separate GPIO signal that can force the gates open. The question is, how do I do this by the CCU module? What I would _not_ like to do:

- Change the alternative function of the IO's (to input), since it feels a bit hacky. Also, this method can't synchronously set the PWM's to a passive level.
- Generate TRAP by S/W (if possible), since I want to be able to differentiate from a true trap.

I can't seem to find a good way to do this. Any suggestions? Note that I want slice 3 to remain unaffected, since it's triggering various things.