CHAPTER 3 CPU FUNCTION
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User’s Manual U14359EJ4V0UM
3.4.2
Image
A 256 MB physical address space is seen as 16 images in the 4 GB CPU address space. In actuality, the same
256 MB physical address space is accessed regardless of the values of bits 31 to 28 of the CPU address. Figure 3-2
shows the image of the virtual addressing space.
Physical address x0000000H can be seen as CPU address 00000000H, and in addition, can be seen as address
10000000H, address 20000000H, … , address E0000000H, or address F0000000H.
Figure 3-2. Images on Address Space
FFFFFFFFH
F0000000H
EFFFFFFFH
00000000H
Internal ROM
Image
Image
Image
Internal RAM
Peripheral I/O
External memory
Physical address space
FFFFFFFH
0000000H
Image
Image
E0000000H
DFFFFFFFH
20000000H
1FFFFFFFH
10000000H
0FFFFFFFH
CPU address space