SPRUJ53 April 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
As explained in Section 25.1.5, when the I2C module is a controller, the I2C module clock is divided down further to use as the controller clock on the SCL pin. As shown in Figure 25-4, the shape of the controller clock depends on two divide-down values: