HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 261

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

9.3.3
The external address space has a capacity of 48 Mbytes and is used by dividing three partial
spaces. The kind of memory to be connected and the data bus width are specified in each partial
space. The address map for the external address space is listed in table 9.2.
Table 9.2
Notes: 1. Normal memory can be connected to the external device which has an interface, such
Area
Area 0
(CS0 area)
Area 1
Area 2
Area 3
(CS3 area)
Area 4
(CS4 area)
Area 5
Area 6
Area 7
2. In the area 0 (selected when the chip select signal CS0 is asserted), the data bus width
3. The data bus width is set by the CSn space bus control register (CSnBCR). The data
4. Do not access the reserved area. If the reserved area is accessed, the correct
Address Map
as the SRAM and ROM.
is 16-bit fixed.
bus width should be 16 bits when SDRAM is connected in area 3.
operation cannot be guaranteed.
Memory to be
Connected
Normal memory*
Burst ROM
Internal I/O
Reserved area*
Normal memory*
Byte-selection
SRAM
SDRAM
Normal memory*
Burst ROM
Byte-selection
SRAM
Reserved area*
Reserved area*
Reserved area*
Address Space Map of External Address Space
4
4
4
4
1
1
1
Physical Address
H'00000000 to H'00FFFFFF
H'01000000 to H'03FFFFFF
H'00000000 + H'20000000 × n to
H'03FFFFFF + H'20000000 × n
H'04000000 to H'07FFFFFF
H'04000000 + H'20000000 × n to
H'07FFFFFF + H'20000000 × n
H'08000000 + H'20000000 × n to
H'0BFFFFFF + H'20000000 × n
H'0C000000 to H'0CFFFFFF
H'0D000000 to H'0FFFFFFF
H'0C000000 + H'20000000 × n to
H'0FFFFFFF + H'20000000 × n
H'10000000 to H'10FFFFFF
H'11000000 to H'13FFFFFF
H'10000000 + H'20000000 × n to
H'13FFFFFF + H'20000000 × n
H'14000000 + H'20000000 × n to
H'17FFFFFF + H'20000000 × n
H'18000000 + H'0000000 × n to
H'1BFFFFFF + H'20000000 × n
H'1C000000 + H'20000000 × n to
H'1FFFFFFF + H'20000000 × n
Rev. 1.00, 02/04, page 223 of 804
Capacity
16 Mbytes
Shadow
Shadow
16 Mbytes
Shadow
Shadow
16 Mbytes
Shadow
Shadow
Access Size
8, 16, 32*

(n = 1 to 6)
(n = 1 to 6)
(n = 1 to 6)
8, 16, 32*
(n = 1 to 6)
8, 16, 32*
(n = 1 to 6)
(n = 1 to 6)
(n = 0 to 6)
(n = 0 to 7)
2
3
3