20.5.2.2.1 Sending a 7-Bit Address to the Client

Sending a 7-bit device address involves sending one byte to the client. A 7-bit address byte must contain the 7 bits of the I²C device address and a R/W status bit that defines whether the message will be a write to the client (host transmission and client reception) or a read from the client (client transmission and host reception).

Note: In a 7-Bit Addressing mode, each node using the I²C protocol should be configured with a unique address that is stored in the I2CxADD register.

While transmitting the address byte, the host must shift the address bits [7:0] left by 1 bit and configure bit 0 as the R/W bit.