8.5.3.6 RREG (0010 0rxx)

The RREG command reads the value of the register at address r. Reading a register must be performed as shown in Figure 37 by using two I²C communication frames. The first frame is an I²C write operation where the R/W bit at the end of the address byte is 0 to indicate a write. In this frame, the host sends the RREG command including the register address to the ADS1219. The second frame is an I²C read operation where the R/W bit at the end of the address byte is 1 to indicate a read. The ADS1219 reports the contents of the requested register in this second I²C frame.

Figure 37. Read Register Sequence