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Chapter 3
CPU Function
Preliminary User’s Manual U15839EE1V0UM00
3.4.2 Image
64 MB physical address space is seen as 64 images in the 4 GB CPU address space. In actuality, the
same 64 MB physical address space is accessed regardless of the values of bits 31 to 26 of the CPU
address. Figure 3-6 shows the image of the virtual addressing space.
Physical address x000 0000H can be seen as CPU address 0000 0000H, and in addition, can be seen
as address 0400 0000H, address 0800 0000H, …, address F800 0000H, or address FC00 0000H.
Figure 3-6:
Image on Address Space
FFFF FFFFH
FC00 0000H
FBFF FFFFH
0000 0000H
Image
Image
Image
Internal RAM
Peripheral I/O
External memory
Physical address space
x3FF FFFFH
x000 0000H
Image
Image
F800 0000H
F7FF FFFFH
0800 0000H
07FF FFFFH
0400 0000H
03FF FFFFH
CPU address space
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