SPRUJ79 November 2024 F29H850TU
Figure 38-1 shows the block diagram for PMBus. The PMBus module handles the lower levels of the PMBus protocol. In addition to controlling signal levels and timing, parsing addresses, and buffering data, the PMBus module also directly supports complex transactions such as Read Word and Process Call.
There are four PMBus signals:
The SDA and SCL timings produced by the module are derived from SYSCLK. To comply with the PMBus timing specs, the bit clock divider must be set by way of the PMBTIMCLK register to provide a bit clock with respect to the module's configured speed.