Figure 366. Master Initialization Flowchart; Figure 367. 10-Bit Address Read Access With Head10R=0 - ST STM32L4x6 Reference Manual

RM0351
Initialization of a master receiver addressing a 10-bit address slave
•
If the slave address is in 10-bit format, the user can choose to send the complete read
sequence by clearing the HEAD10R bit in the I2C_CR2 register. In this case the master
automatically sends the following complete sequence after the START bit is set:
(Re)Start + Slave address 10-bit header Write + Slave address 2nd byte + REStart +
Slave address 10-bit header Read
•
If the master addresses a 10-bit address slave, transmits data to this slave and then
reads data from the same slave, a master transmission flow must be done first. Then a
repeated start is set with the 10 bit slave address configured with HEAD10R=1. In this
case the master sends this sequence: ReStart + Slave address 10-bit header Read

Figure 366. Master initialization flowchart

Figure 367. 10-bit address read access with HEAD10R=0

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