SH7604 Datasheet, PDF (155/633 Pages) Hitachi Semiconductor – Hardware Manual

• Bits 15 to 8—Reserved: These bits always read 0. The write value should always be 0.
• Bits 7 and 6—Bus Size Specification for Area 3 (A3SZ1–A3SZ0). Effective only when
ordinary space is set.
Bit 7: A3SZ1
0
1
Bit 6: A3SZ0
0
1
0
1
Description
Reserved (do not set)
Byte (8-bit) size
Word (16-bit) size
Longword (32-bit) size
(Initial value)
• Bits 5 and 4—Bus Size Specification for Area 2 (A2SZ1–A2SZ0): Effective only when
ordinary space is set.
Bit 5: A2SZ1
0
1
Bit 4: A2SZ0
0
1
0
1
Description
Reserved (do not set)
Byte (8-bit) size
Word (16-bit) size
Longword (32-bit) size
(Initial value)
• Bits 3 and 2—Bus Size Specification for Area 1 (A1SZ1–A1SZ0)
Bit 3: A1SZ1
0
1
Bit 2: A1SZ0
0
1
0
1
Description
Reserved (do not set)
Byte (8-bit) size
Word (16-bit) size
Longword (32-bit) size
(Initial value)
• Bits 1 and 0—Reserved: These bits always read 0. The write value should always be 0.
Note: The bus size of area 0 is specified by the mode input pins.
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