Dear Moto-san,
I'm sorry I was not clear.
Register 0x00 does restore default register settings.
Register 0x08 does not restore default register settings.
So, to put default settings back into the registers you would write:
Register 0x00 = 0x3C (soft reset, restore default register contents)
Register 0x00 = 0x18 (normal operation)
Please let me know if you have any other questions.
Thank you.
Doug