Fujitsu MB91460 SERIES FR60 User Manual page 563

● 32-bit bus width
(a) PA1/PA0="00"
→(1) Output A1/A0="00"
MSB
(1)
00 01 10 11
32bit
● 16-bit bus width
(A) Word access
(a) PA1/PA0="00"
(1) Output A1/A0="00"
(2) Output A1/A0="10"
LSB
MSB
(1) 00 01
(2)
10 11
(B) Halfword access
(a) PA1/PA0="00"
(1) Output A1/A0="00"
(1)
00 01
10 11
(C) Byte access
(a) PA1/PA0="00"
(1) Output A1/A0="00"
(1) 01
00
10 11
Figure 4-10 External bus Access for 32-Bit Bus Width
(b) PA1/PA0="01"
→(1) Output A1/A0="00"
LSB
(1)
00 01 10 11
Figure 4-11 External bus Access for 16-Bit Bus Width
(b) PA1/PA0="01"
(1) Output A1/A0="00"
(2) Output A1/A0="10"
(1) 00 01
(2)
10 11
(b) PA1/PA0="01"
(1) Output A1/A0="00"
(1)
00 01
10 11
(b) PA1/PA0="01"
(1) Output A1/A0="00"
(1)
00 01
10 11
(c) PA1/PA0="10"
→(1) Output A1/A0="00"
(1)
00 01 10 11
(c) PA1/PA0="10"
(1) Output A1/A0="00"
(2) Output A1/A0="10"
(1)
00 01
(2)
10 11
(c) PA1/PA0="10"
(1) Output A1/A0="00"
00 01
(1) 10 11
(c) PA1/PA0="10"
(1) Output A1/A0="00"
00 01
10
(1) 11
Chapter 31 External Bus
4.Endian and Bus Access
(d) PA1/PA0="11"
→(1) Output A1/A0="00"
(1)
00 01 10 11
(d) PA1/PA0="11"
(1) Output A1/A0="00"
(2) Output A1/A0="10"
(1)
00 01
(2)
10 11
(d) PA1/PA0="11"
(1) Output A1/A0="00"
00 01
(1)
10 11
(d) PA1/PA0="11"
(1) Output A1/A0="00"
00 01
(1) 10 11
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