ZHCS688I November 2011 – March 2018 TPS65217
PRODUCTION DATA.
Registers 0x0B through 0x1F, with the exception of the password register, are protected against accidental writing by an 8-bit password. The password must be written before writing to a protected register and is automatically reset to 0x00 after the following I2C transaction, regardless of the register that was accessed and regardless of the transaction type (read or write). The password is required for write access only and is not required for read access.