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Programmer’s Model
2-4
Copyright © ARM Limited 1997, 1998, 2000. All rights reserved.
ARM DDI 0192A
2.2.2
Little-endian format
In little-endian format, the lowest numbered byte in a word is considered the least
significant byte of the word, and the highest numbered byte the most significant. Byte
0 of the memory system is therefore connected to data lines 7 to 0. This is shown in
Figure 2-2.
Figure 2-2 Little-endian addresses of bytes with words
Higher address
8
4
0
31
24 23
Word
address
16 15
8 7
0
Lower address
· Least significant byte is at lowest address
· Word is addressed by byte address of least significant byte
7
10
6
9
5
8
4
11
3
2
1
0
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