HD6417618A datasheet(142/646 Pages) RENESAS

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Section 7 Bus State Controller (BSC)

Rev. 6.00 Jun. 12, 2007 Page 110 of 610

REJ09B0131-0600

Area P4 (H'E0000000 to H'EFFFFFFF) is an I/O area and is allocated to internal register

addresses. Therefore, area P4 does not become shadow space.

Area 0 (CS0)

H'00000000

H'20000000

H'40000000

H'60000000

H'80000000

H'A0000000

H'C0000000

H'E0000000

Area 1 (reserved)

Area 2 (reserved)

Area 3 (CS3)

Area 4 (CS4)

Area 5A (reserved)

Area 6A (reserved)

Area 7 (reserved)

Physical address space

Address Space

Area 5B (CS5B)

Area 6B (CS6B)

Figure 7.2 Address Space

7.3.3

Address Map

The external address space has a capacity of 256 Mbytes and is divided into five areas. Types of

memory to be connected and the data bus width are specified for individual areas. The address

map for the external address space is shown in table 7.2.

Table 7.2

Address Map 1 (CMNCR.MAP = 0)

Physical Address

Area

Memory to be Connected

Capacity

H'00000000 to H'03FFFFFF

Area 0

Normal memory

64 Mbytes

H'04000000 to H'07FFFFFF

Area 1

Reserved area*

64 Mbytes

H'08000000 to H'0BFFFFFF

Area 2

Reserved area*

64 Mbytes

H'0C000000 to H'0FFFFFFF

Area 3

Normal memory

Byte-selection SRAM

SDRAM

64 Mbytes

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