beautypg.com

Halfword access – FUJITSU MB91460 SERIES FR60 User Manual

Page 572

background image

556

Chapter 31 External Bus

4.Endian and Bus Access

Halfword Access

Big endian mode

Little endian mode

32-bit bus
width

(1)

D00

D31

D31

AA

BB

WR0

WR1

BB

AA

-

-

D00

address : "0"

Internal External Control
Reg terminal terminal

(1)

D00

D31

D31

AA

BB

WR0

WR1

BB

AA

-

-

D00

address : "0"

Internal External Control
Reg terminal terminal

(1)

D00

D31

D31

CC

DD

WR2

WR3

DD

CC

-

-

D00

address : "2"

Internal External Control
Reg terminal terminal

(1)

D00

D31

D31

CC

DD

WR2

WR3

DD

CC

-

-

D00

address : "2"

Internal External Control
Reg terminal terminal