JAJSE50 November 2017 TLA2021 , TLA2022 , TLA2024
PRODUCTION DATA.
Read the conversion data register or configuration register as shown in Figure 12 by using two I2C communication frames. The first frame is an I2C write operation where the R/W bit at the end of the slave address is 0 to indicate a write. In this frame, the host sends the register pointer that points to the register to read from. The second frame is an I2C read operation where the R/W bit at the end of the slave address is 1 to indicate a read. The TLA202x transmits the contents of the register in this second I2C frame. The master can terminate the transmission after any byte by not acknowledging or issuing a START or STOP condition.
When repeatedly reading the same register, the register pointer does not need to be written every time again because the TLA202x store the value of the register pointer until a write operation modifies the value.