Writing data to a target device consists of three
parts, as illustrated in Figure 8-6:
- The controller begins with a
start condition followed by the target device address with the R/
W bit set to 0’b.
- After an ACK from the target
device, the 8-bit register word address is written.
- After an ACK from the target
device, the 8-bit data is written, followed by a stop condition.