SH7058 Datasheet, PDF (185/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

9.1.5 Address Map
Figure 9.2 shows the address format used by the SH7058.
A31–A24
A23, A22 A21
A0
Output address:
Output from the address pins
CS space selection:
Decoded, outputs to
when A31 to A24 = 00000000
Space selection:
Not output externally; used to select the type of space
On-chip ROM space or CS0 to CS3 space when 00000000 (H'00)
Reserved (do not access) when 00000001 to 11111110 (H'01 to H'FE)
On-chip peripheral module space or on-chip RAM space when 11111111 (H'FF)
Figure 9.2 Address Format
This chip uses 32-bit addresses:
• Bits A31 to A24 are used to select the type of space and are not output externally.
• Bits A23 and A22 are decoded and output as chip select signals (CS0 to CS3) for the
corresponding areas when bits A31 to A24 are 00000000.
• A21 to A0 are output externally.
Table 9.3 shows the address map.
Rev. 3.0, 09/04, page 144 of 1086