45.6.5.7.1 Read/Write Operation

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

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

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

Figure 45-38. High-Speed Mode Read/Write