CHAPTER 4 BUS CONTROL FUNCTION
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User’s Manual U14359EJ4V0UM
(c) When the data bus width is 16 bits (big endian)
<1> Access to even address (2n)
<2> Access to odd address (2n + 1)
1st access
2nd access
7
0
7
0
Halfword
data
15
8
External
data bus
2n + 1
Address
15
8
2n
7
0
7
0
Halfword
data
15
8
15
8
External
data bus
2n + 1
Address
7
0
7
0
Halfword
data
15
8
15
8
External
data bus
2n + 2
Address
(d) When the data bus width is 8 bits (big endian)
<1> Access to even address (2n)
<2> Access to odd address (2n + 1)
1st access
2nd access
1st access
2nd access
7
0
7
0
Halfword
data
15
8
External
data bus
2n
Address
7
0
7
0
Halfword
data
15
8
External
data bus
2n + 1
Address
7
0
7
0
Halfword
data
15
8
External
data bus
2n + 1
Address
7
0
7
0
Halfword
data
15
8
External
data bus
2n + 2
Address