SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
Each multicontroller I2C supports the software reset by accessing the I2C_SYSC[1] SRST bit (1: reset; 0: normal mode).
The software reset status can be checked by accessing the I2C_SYSS[0] RDONE bit (1: reset is done; 0: reset is ongoing).
To do a software reset, the following steps must be done:
The I2C_CON[15] I2C_EN bit can hold the functional clock domain of the multicontroller I2C in reset after the device reset has been released. When the system bus reset is removed, this bit remains cleared. The functional part of the I2C controller is held in reset state while this bit is 0, and all configuration registers can be accessed.
The I2C_CON[15] I2C_EN bit must be set to 1 to enable the functional part of the I2C controller.
The I2C_SYSS[0] RDONE bit is asserted only after the module is enabled by setting the I2C_CON[15] I2C_EN bit to 1.