SLLU349 August 2022
The default clock speed is 100 kHz, which is compatible with PMBUS 1.0 and SMBUS 2.0. For compatibility with future PMBUS specs, the clock speed can be increased to 400 kHz or 1 MHz.
As per the SMBus protocol, the minimum and maximum value for the Clock Stretching is 25 ms and 35 ms, respectively.