Filter
Top Products
552
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)
D07
D15
D23
D31 D31
"00" "01"
AA
BB
CC
DD
CCDD
"10" "11"
AABB
read/write
External busInternal register
Output address low-order digits
D31
D08D07
D00
D16D15
D31D00D16D15
D24D23
D08D07D24D23
This LSI
D31
|
D24
D23
|
D16
D15
|
D08
D07
|
D00
00 01 10 11 11 10 00
01
big endian area
little endian area