DLPS043B June 2014 – February 2018 DLPA2000
PRODUCTION DATA.
Register addresses 0x11h through 0x27h can be read-accessed the same way as any other register, but are protected against accidental write operations through the PASSWORD register (address 0x10h). To write to a protected register, follow these steps:
Both writes must be consecutive, that is, there must be no other read or write operation in between sending the two bytes. After the password has been successfully written, registers 0x11h through 0x27h are unlocked and can be write accessed using the regular SPI protocol. They remain unlocked until any byte other than 0xBAh is written to the PASSWORD register or the part is power cycled.
To check if the registers are unlocked, read back the PASSWORD register. If the data returned is 0x00h, the registers are locked. If the PASSWORD register returns 0x01h, the registers are unlocked.