Integrator/CP User Guide - ARM Information Center

Getting StartedIntegrator/AP. ARM Integrator core modules select the FPGA image based on theCFGSEL signal, so the Integrator/CP compatible core modules can operateeither standalone or with an Integrator/CP baseboard.2.4.2 Expanding your system with your own modulesThere are restrictions on how you can expand your system with your own modules:• Some of the bus lines are reserved or used for special signals. Be careful thatexpansion modules do not use signals on the HDRA and HDRB that clash withsignals carried between the core module and baseboard.• Custom core modules cannot be added unless they have their own system bus andaddress space. That is, they must not use the bus signals on HDRA and HDRB.The module must have some dual-port memory, or some equivalentcommunication mechanism, in order to communicate with other modules. (Anyadditional custom core modules must operate in slave mode.)CautionCustom core module processors cannot use the header address or data lines. Thecustom module must appear as a memory region to the system.• The appropriate connector type and spacing must be used.• The new module must decode its own address space.• Keep the current drawn by the system below the limits.2-8 Copyright © 2002 ARM Limited. All rights reserved. ARM DUI 0159B