HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 162
HD6417034B
Manufacturer Part Number
HD6417034B
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417034B.pdf
(687 pages)
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Section 8 Bus State Controller (BSC)
Area 5: Area 5 is an area with address bits A26–A24 set to 101 and an address range of
H'5000000–H'5FFFFFF and H'D000000–H'DFFFFFF. Figure 8.8 shows a memory map of area 5.
Area 5 is allocated to on-chip supporting module space when the A27 address bit is 0 and external
memory space when A27 is 1. In on-chip supporting module space, bits A23–A9 are ignored and
the shadows are in 512-byte units. The bus width is 8 bits when the A8 bit is 0 and 16 bits when
A8 is 1. When on-chip supporting module space is accessed, the CS5 signal is not valid. In
external memory space, the A23 and A22 bits are not output and the shadow is in 4-Mbyte units.
The bus width is always 16 bits. When external memory space is accessed, the CS5 signal is valid.
H'5000000
H'50001FF
H'5FFFE00
H'5FFFFFF
Rev. 7.00 Jan 31, 2006 page 136 of 658
REJ09B0272-0700
Note: * Some on-chip supporting module registers can only be accessed as 8-bit registers even
Logical address
though they occupy 16 bits (see Appendix A).
8 or 16-bit
Shadow
Shadow
Shadow
Shadow
Shadow
Shadow
space
space
On chip
peripheral
module space
(512 bytes)
A8 = 0:
8-bit space
A8 = 1: 16-bit space *
• Ignored
• CS5 not valid
Figure 8.8 Memory Map of Area 5
addresses:
A23–A9
(Valid addresses
A8–A0)
Actual
space
H'D000000
H'D3FFFFF
H'D400000
H'D7FFFFF
H'D800000
H'DBFFFFF
H'DC00000
H'DFFFFFF
Logical address
16-bit space
Shadow
Shadow
Shadow
Shadow
space
• Valid
• CS5 valid
(4 Mbytes)
addresses
A21–A0
A23 and A22
not output)
External
memory
space
Actual
space
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