I’ve downloaded “ColdFire® Family Programmer’s Reference Manual” (CFPRM.pdf), “MCF5441x Reference Manual” (MCF54418RM_refmanual.pdf) and the “MCF5441x ColdFire Microprocessor Data Sheet” (MCF54418.pdf) from nxp.com, based on one of the Digitakt (OG) hardware teardowns (GitHub - lomn/Tearing-down-the-elektron-digitakt-for-funzies: Tearing down the elektron digitakt for funzies) that mentioned the Coldfire MCF54415.
Hope that helps 
edit: also, Digitakt II PCB: Digitakt II PCB