TMS320C6678: Is this a Keystone I or a Keystone II device?

C6678 and C665x are Keystone 1 family. These are multicore but DSP only devices 

Keystone 2 family includes devices like 66AK2E05/02 and 66AK2H14/12/06 etc these are typically ARM+DSP devices. 

Thanks kindly for the quick reply. That resolves this inquiry.