RX610 Group
26. ROM (Flash Memory for Code Storage)
R01UH0032EJ0120 Rev.1.20
Page 874 of 1006
Feb 20, 2013
26.10.2
ID Code Protection
This function is used to prohibit reading/programming/erasure from the host.
Using the control code and ID code written in the ROM, ID code protection is enabled or disabled and ID code protection
is judged. When ID code protection is enabled, the code sent from the host is compared with the control code and ID
code in the ROM to determine whether they match, and reading/programming/erasure will be enabled only when the two
match.
The control code and ID code in the ROM consists of four 32-bit words. Figure 26.25 shows the configuration of the
control code and ID code. The ID code should be set in 32-bit units.
Control code
ID code 1
ID code 2
ID code 3
ID code 4
ID code 5
ID code 6
ID code 7
ID code 8
ID code 9
ID code 10
ID code 11
ID code 12
ID code 13
ID code 14
ID code 15
FFFF FFA0h
FFFF FFA4h
FFFF FFA8h
FFFF FFACh
31 24
23 16
15 8
7 0
Figure 26.25 Configuration of Control Code and ID Code in ROM
(1) Control Code
The control code determines whether ID code protection is or is not enabled and the method of authentication to use with
the host. Table 26.11 shows how the control code determines the method of authentication
Summary of Contents for RX600 Series
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