NEC V850E/PH2, User Manual

Page: 158 / 1053

158
Chapter 4 Bus Control Function (
μ
PD70F3187 only)
User’s Manual U16580EE3V1UD00
(2) Halfword access (16 bits)
(a) When the data bus width is 32 bits (Little Endian)
<1> Access to address (4n) <2> Access to address (4n+1)
<3> Access to address (4n+2) <4> Access to address (4n+3)
7
0
7
0
15
8
15
8
23
16
31
24
External
data bus
Address
4n
4n + 1
Halfword
data
7
0
7
0
15
8
15
8
23
16
31
24
External
data bus
Address
4n + 1
4n + 2
Halfword
data
7
0
7
0
15
8
15
8
23
16
31
24
External
data bus
Address
4n + 2
4n + 3
Halfword
data
7
0
7
0
15
8
15
8
23
16
31
24
External
data bus
Address
4n + 3
7
0
7
0
15
8
15
8
23
16
31
24
External
data bus
Address
4n + 4
Halfword
data
Halfword
data
1st access 2nd access