125
Table 8.7
How Space is Divided
Area
Address
Assignable
Memory
Capacity
(Linear Space)
Bus
Width
CS Output
0
H'0000000–H'0FFFFFF
On-chip ROM
*
1
64 kB
32
—
External memory
*
2
4 MB
8/16
*
3
CS0
1
H'1000000–H'1FFFFFF
External memory
4 MB
8
CS1
DRAM
*
4
16 MB
8
RAS
CAS
2
H'2000000–H'2FFFFFF
External memory
4 MB
8
CS2
3
H'3000000–H'3FFFFFF
External memory
4 MB
8
CS3
4
H'4000000–H'4FFFFFF
External memory
4 MB
8
CS4
5
H'5000000–H'5FFFFFF
On-chip supporting
modules
512 B
8/16
*
5
—
6
H'6000000–H'6FFFFFF
External memory
*
7
4 MB
8/16
*
6
CS6
Multiplexed I/O
4 MB
7
H'7000000–H'7FFFFFF
External memory
4 MB
8
CS7
0
H'8000000–H'8FFFFFF
On-chip ROM
*
1
64 kB
32
—
External memory
*
2
4 MB
8/16
*
3
CS0
1
H'9000000–H'9FFFFFF
External memory
4 MB
16
CS1
DRAM
*
4
16 MB
16
RAS
CAS
2
H'A000000–H'AFFFFFF
External memory
4 MB
16
CS2
3
H'B000000–H'BFFFFFF
External memory
4 MB
16
CS3
4
H'C000000–H'CFFFFFF
External memory
4 MB
16
CS4
5
H'D000000–H'DFFFFFF
External memory
4 MB
16
CS5
6
H'E000000–H'EFFFFFF
External memory
4 MB
16
CS6
7
H'F000000–H'FFFFFFF
On-chip RAM
8 kB
*
8
, 4 kB
*
9
32
—
Notes:
*
1 When MD2–MD0 pins are 010 (SH7034)
*
2 When MD2–MD0 pins are 000 or 001
*
3 Select with MD0 pin
*
4 Select with DRAME bit in BCR
*
5 Divided into 8-bit and 16-bit space according to value of address bit A8. (Longword
accesses are inhibited, however, for on-chip supporting modules with bus widths of 8
bits. Some on-chip supporting modules with bus widths of 16 bits also have registers
that are only byte-accessible and registers for which byte access is inhibited. For
details, see the sections on the individual modules.)
*
6 Divided into 8-bit space and 16-bit space by value of address bit A14
*
7 Select with IOE bit in BCR
*
8 For SH7032
*
9 For SH7034
Содержание HD6417032
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