SBOU024C august 2004 – july 2023 PGA309
Following a START condition issued by the master, a control byte is the first byte received. The seven most significant bits (MSBs) of the control byte are the slave address for the part being addressed. The last bit of the control byte is a Read/Write control bit (Read = ‘1’, Write = ‘0’). The slave addresses for the PGA309 and supported external EEPROM are shown in Figure 4-3.