38C3 datasheet(53/224 Pages) RENESAS

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38C3 Group User’s Manual

HARDWARE

1-38

ROM CORRECTION FUNCTION (Mask ROM

version only)

The 38C3 group has the ROM correction function correcting data at

the arbitrary addresses in the ROM area.

[ROM correct address register] 0F0216 – 0F1116

This is the register to store the address performing ROM correction.

There are two types of registers to correct up to 8 addresses: one is

the register to store the high-order address and the other is to store

the low-order address.

[ROM correct enable register 1 (RC1)] 0F0116

This is the register to enable the ROM correction function. When set-

ting the bit corresponding to the ROM correction address to “1”, the

ROM correction function is enabled.

It becomes invalid to the addresses of which corresponding bit is “0”.

All bits are “0” at the initial state.

[ROM correct data]

This is the register to store a correct data for the address specified by

the ROM correct address register.

sNotes on ROM correction function

1. To use the ROM correction function, transfer data to each ROM

correct data register in the initial setting.

2. Do not specify the same addresses in the ROM correct address

Fig. 36 Structure of ROM correct address register

Fig. 37 Structure of ROM correct data

Fig. 38 Structure of ROM correct enable register 1

FUNCTIONAL DESCRIPTION

0F0216

0F0316

0F0416

0F0516

0F0616

0F0716

0F0816

0F0916

0F0A16

0F0B16

0F0C16

0F0D16

0F0E16

0F0F16

0F1016

0F1116

ROM correct high-order address register 1

ROM correct low-order address register 1

ROM correct high-order address register 2

ROM correct low-order address register 2

ROM correct high-order address register 3

ROM correct low-order address register 3

ROM correct high-order address register 4

ROM correct low-order address register 4

ROM correct high-order address register 5

ROM correct low-order address register 5

ROM correct high-order address register 6

ROM correct low-order address register 6

ROM correct high-order address register 7

ROM correct low-order address register 7

ROM correct high-order address register 8

ROM correct low-order address register 8

ROM correct data 1

ROM correct data 2

ROM correct data 3

ROM correct data 4

ROM correct data 5

ROM correct data 6

ROM correct data 7

ROM correct data 8

005016

005116

005216

005316

005416

005516

005616

005716

ROM correct enable register 1(address 0F01 16)

RC1

ROM correct address 1 enable bit

0 : Disabled

1 : Enabled

ROM correct address 2 enable bit

0 : Disabled

1 : Enabled

ROM correct address 3 enable bit

0 : Disabled

1 : Enabled

ROM correct address 4 enable bit

0 : Disabled

1 : Enabled

ROM correct address 5 enable bit

0 : Disabled

1 : Enabled

ROM correct address 6 enable bit

0 : Disabled

1 : Enabled

ROM correct address 7 enable bit

0 : Disabled

1 : Enabled

ROM correct address 8 enable bit

0 : Disabled

1 : Enabled

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