c66x corepac user‘s guide中描述的xmc：
With XMC’s MPAX feature, C66x CorePac supports systems with address widths up to 36 bits, despite only supporting 32-bit addresses internally. It accommodates these large memory systems by extending addresses on external requests with its Memory Protection and Address eXtension (MPAX) unit.
The MPAX combines memory protection and address extension into one unified process. The memory protection step determines what types of accesses are permitted on various address ranges within C66x CorePac’s 32-bit address map. The address extension step projects those accesses onto a larger 36-bit address space.
目前在开发一块6678的板子，每个6678配置了8GB DDR3，希望给不同的core配置不同的物理内存。
该如何配置xmc？
xmc的配置寄存器是全局的吗？
