The contents of the ROM can be read out, one word at a time, starting with that of the requested address. The following details the programming sequence of a ROM read by address:
- Write the most significant 11th, 10th, 9th, and 8th bit of the ROM address in R139[3-0] and write the least significant 8 bits of the ROM address in R140.
- The ROM data located at the address specified in
the step above can be obtained by reading R143 in the same I2C
transaction. Any additional access that is part of the same transaction causes
the ROM address to be incremented and a read occurs at the next ROM address.
Access to ROM terminates at the end of current I2C transaction.