300
Chapter 7
Bus and Memory Control (BCU, MEMC)
Preliminary User’s Manual U17566EE1V2UM00
(b) Big endian
Figure 7-29
Access to address 4n
Figure 7-30
Access to address 4n + 1
7
0
7
0
Word data
External
data bus
Address
15
8
4n + 3
23
16
31
24
7
0
7
0
Word data
External
data bus
4n + 2
Address
15
8
23
16
31
24
7
0
7
0
Word data
External
data bus
4n + 1
Address
15
8
23
16
31
24
7
0
7
0
Word data
External
data bus
4n
Address
15
8
23
16
31
24
1-st Access
2-nd Access
3-rd Access
4-th Access
7
0
7
0
Word data
External
data bus
Address
15
8
4n + 4
23
16
31
24
7
0
7
0
Word data
External
data bus
4n + 3
Address
15
8
23
16
31
24
7
0
7
0
Word data
External
data bus
4n + 2
Address
15
8
23
16
31
24
7
0
7
0
Word data
External
data bus
4n + 1
Address
15
8
23
16
31
24
1-st Access
2-nd Access
3-rd Access
4-th Access
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