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Bit
Bit Name
15
ABWH7
14
ABWH6
13
ABWH5
12
ABWH4
11
ABWH3
10
ABWH2
9
ABWH1
8
ABWL0
7
ABWL7
6
ABWL6
5
ABWL5
4
ABWL4
3
ABWL3
2
ABWL2
1
ABWL1
0
ABWL0
[Legend]
×:
Don't care
Notes: 1. Initial value at 16-bit bus initiation is H'FEFF, and that at 8-bit bus initiation is H'FFFF.
2. An address space specified as byte control SRAM interface must not be specified as 8-
bit access space.
Initial
1
Value*
R/W
Description
1
R/W
Area 7 to 0 Bus Width Control
1
R/W
These bits select whether the corresponding area is to be
designated as 8-bit access space or 16-bit access space.
1
R/W
ABWHn
1
R/W
×
1
R/W
0
1
R/W
1
R/W
1
1/0
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
Section 6 Bus Controller (BSC)
ABWLn (n = 7 to 0)
0:
Setting prohibited
1:
Area n is designated as 16-bit access
space
1:
Area n is designated as 8-bit access
2
space*
Rev.2.00 Jun. 28, 2007 Page 125 of 666
REJ09B0311-0200
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