SPRUJ52C june 2022 – july 2023 AM69 , AM69A , TDA4AH-Q1 , TDA4AP-Q1 , TDA4VH-Q1 , TDA4VP-Q1
The noise filter is used to suppress any noise that is 50 ns or less in case of F/S operation modes, and any noise that is 10 ns or less in case of HS mode operation. The noise filter is always one period of the INTERNAL_CLK clock. This way, for HS mode operation (prescaler bypassed), the filter suppresses spikes of less than 10.4 ns.
For standard mode (for example, the I2C_PSC[7-0] PSC bit field = 4), the maximum width of suppressed spikes is 46.1 ns.
To ensure correct filtering, the prescaler must be programmed accordingly by the I2Ci.I2C_PSC[7-0] PSC bit field.