SIGNALCORE SC5312A Operating And Programming Manual page 19

Writing to the User EEPROM
USER_EEPROM_WRITE (0x1B) - There is an onboard 32 kilobyte EEPROM for the user to store data. User
data is sent one byte at a time and is contained in the last (least significant) byte of the three bytes of data
written to the register. The other two bytes contain the write address in the EEPROM. For example, to
write user data 0x22 into address 0x1F00 requires writing 0x1F0022 to this register.
SC5312A Operating & Programming Manual Rev 1.0.2 16