What is the ECCN for the MPC7448, and is there a place on the web site to find it in general?
ECCN for the MPC7448 is 3A991A1.
Please select a part number on the MPC7448 Product page
https://www.nxp.com/products/processors-and-microcontrollers/power-architecture/integrated-host-proc...
and find ECCN in Shipping information.