The following are known CTRPF AR Cheat Codes for Sonic Generations on Nintendo 3DS (3DS).

0004000000062300.txt

[Freeze timer]
00571928 00000000

[Max Rings]
10571934 000003E7

[Max Lifes]
20571930 00000063
205715F4 00000063

[Infinite Boost (Modern Sonic)]
604D6760 00000000
B04D6760 00000000
10000F80 0000F401
D2000000 00000000

[Walk Through Enemies]
604D6760 00000000
B04D6760 00000000
20000F3C 00000014
D2000000 00000000

[Freeze Timer (Special Stages)]
604EFFDC 00000000
B04EFFDC 00000000
00000038 00000000
D2000000 00000000

[Infinite Oxygen]
604D6760 00000000
B04D6760 00000000
10000F4C 00000000
D2000000 00000000