Fujitsu mb91192 用户手册
108
CHAPTER 4 External Bus Interface
4.6.4
Comparison between Big Endian and Little Endian for
External Access
External Access
Comparison between big endian and little endian of external access for word access,
half-word access, and byte access to the bus width is described.
half-word access, and byte access to the bus width is described.
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Word Access
Big endian mode
Little endian mode
16-bit bus
width
width
8-bit bus
width
width
Control pin
Internal Reg
External
pin
address: "0" "1"
D00
D31
D31
AA
CC
BB
DD
WR0
WR1
AA
CC
BB
DD
D16
"0"
"1"
D00
D31
D31
AA
CC
BB
DD
DD BB
CC AA
D16
D16
WR0
WR1
Control pin
Internal Reg External pin
address:
"0" "1" "2" "3"
D00
D31
D31
AA
CC
BB
DD
AA
CC
BB
DD
D24
D24
WR0
Control pin
Internal Reg External pin
address:
"0" "1" "2" "3"
D00
D31
D31
AA
CC
BB
DD
DD
BB
CC
AA
D24
D24
WR0
Control pin
Internal Reg External pin
address: