UPD30102 datasheet(39/114 Pages) RENESAS

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µPD30102

Preliminary Data Sheet

3.7.1 ROM address space

The ROM space differs depending on the bit width of the memory data bus and the capacity of the ROM being used.

• The bit width of the memory data bus is specified by the setting of the DBUS32 pin.

• The ROM capacity is set via the ROM64 bit of BCUCNTREG1.

The physical addresses of the ROM space are listed below.

Table 3-2. ROM Addresses (when using 16-bit data bus)

Physical address

ADD (25:0)

When using 32-Mbit ROM

When using 64-Mbit ROM

0x1FFF FFFF

0x3FF FFFF

BANK 3 (ROMCS3#)

0x1FC0 0000

0x0C0 0000

0x1FBF FFFF

0x3BF FFFF

BANK 2 (ROMCS2#)

0x1F80 0000

0x380 0000

0x1F7F FFFF

0x37F FFFF

BANK 1 (ROMCS1#)

BANK 2 (ROMCS2#)

0x1F40 0000

0x340 0000

0x1F3F FFFF

0x33F FFFF

BANK 0 (ROMCS0#)

0x1F00 0000

0x300 0000

0x1EFF FFFF

0x2FF FFFF

RFU

BANK 1 (ROMCS1#)

0x1E80 0000

0x280 0000

0x1E7F FFFF

0x27F FFFF

BANK 0 (ROMCS0#)

0x1E00 0000

0x200 0000

0x1DFF FFFF

0x1FF FFFF

RFU

0x1800 0000

0x000 0000

Table 3-3. ROM Addresses (when using 32-bit data bus)

Physical address

ADD (25:0)

When using 32-Mbit ROM

When using 64-Mbit ROM

0x1FFF FFFF

0x3FF FFFF

BANK 1 (ROMCS1#)

0x1F80 0000

0x380 0000

0x1F7F FFFF

0x37F FFFF

BANK 0 (ROMCS0#)

0x1F00 0000

0x300 0000

0x1EFF FFFF

0x2FF FFFF

RFU

BANK 0 (ROMCS0#)

0x1E00 0000

0x200 0000

0x1DFF FFFF

0x1FF FFFF

RFU

0x1800 0000

0x000 0000

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