47.9.5.5.1 Read/Write Operation

A TWI high-speed frame always begins with the following sequence:

  1. START condition (S)
  2. Host Code (0000 1XXX)
  3. Not-acknowledge (NACK)

When the TWI is programmed in Client mode and TWI High-speed mode is activated, host code matching is activated and internal timings are set to match the TWI High-speed mode requirements.

Figure 47-120. High-Speed Mode Read/Write