The Motorola MPC555EVB/ETAS ES200 evaluation board was designed with multiple interfaces to allow flexibility for expansion. There are three sets of connectors for expansion. The MAPI-400+100 is on the bottom side of the board and has access to all signals required to interface to a user application board. The host communication expansion (HCE) connectors allow access to the bus of the MPC555. The customized communication expansion (CCE) allows access to some of the MPC555 on-chip communication ports. The HCE and the CCE are on the top side of the EVB555.