Fujitsu MB91460 SERIES FR60 User Manual page 568

Chapter 31 External Bus
4.Endian and Bus Access
● 8-bit bus width
Figure 4-19 Relationship between the Internal Register and External Data Bus in the 8-bit Bus Width
■ Examples of Connection with External Devices
The following shows examples of connecting the MB91460 series to external devices for each bus width.
● 32-bit bus width
Figure 4-20 Example of Connecting the MB91460 Series to External Devices (32-Bit Bus Width)
D31
|
D24
00
D31 D24D23
big endian area
552
Internal register
Output address low-order digits
D31
read/write
AA
D23
BB
D15
CC
D07
DD
This LSI
D23 D15 D07
| | |
D16 D08 D00
01 10 11
D16D15 D08D07
External bus
"00" "01" "10" "11"
DD CC BB
11
D24D23
D00 D31
little endian area
D31
AA
10 01 00
D16D15 D08D07
D00