RX610 Group
11. Buses
R01UH0032EJ0120 Rev.1.20
Page 282 of 1006
Feb 20, 2013
Data Size
8 bits
16 bits
32 bits
Access
Address
Number of
Access
4n
4n
4n
One
Two
Four
D0
D7
D15
RD#
WR1#/BC1#
WR0#/BC0#
First
First
First
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
4n+1
4n+2
4n+3
4n
4n+1
4n+2
4n+3
4n
4n+1
4n
4n+1
4n+2
(p)
One
One
One
First
8 bits
8 bits
8 bits
First
First
4n+1
Two
First
8 bits
8 bits
4n+1
4n+2
4n+2
Two
First
8 bits
8 bits
4n+2
4n+3
4n+3
Two
First
8 bits
8 bits
4n+3
4n+4
(p)
(p)
4n+1
Four
First
8 bits
8 bits
8 bits
8 bits
4n+1
4n+2
4n+3
4n+2
Four
First
8 bits
8 bits
8 bits
8 bits
4n+2
4n+3
4n+4
4n+3
Four
First
8 bits
8 bits
8 bits
8 bits
4n+3
4n+4
4n+5
4n+3
4n+4
4n+5
4n+6
(p)
(p)
(p)
(p)
(p)
(p)
(p)
(p)
(p)
[Legend]
(p): Page access (only when page access is enabled with the PRENB and PWENB bits in CSiMOD)
8
15
0
7
0
7
0
7
0
7
0
7
8
15
0
7
8
15
0
7
8
15
0
7
8
15
0
7
8
15
0
7
8
15
0
7
16
23
24
31
8
15
0
7
16
23
24
31
16
23
24
31
16
23
24
31
D8
Data Bus
Bus Cycle
Unit of Data
Address
Second
Second
Second
Second
Second
Second
Second
Second
Third
Fourth
Third
Fourth
Third
Fourth
Third
Fourth
Figure 11.6 Data Alignment (Big Endian) in 8-Bit Bus Space