ST25R3916B output slew rate

[TM1]

Is it possible to adjust the slew rate of the RFO1/RFO2 outputs of the ST25R3916B?

[Ulysses HERNIOSUS]

Hi,

what are you trying to achieve with changing the slew rate?

Driver behavior can be influenced by means of the bits in Tx Driver Timing Register (B 29h).

BR, Ulysses

[TM1]

I'd like to explore the possibility of reducing rise and fall time of the Tx outputs to reduce harmonics.  (This would be in addition to correct EMC filter values, proper layout, optimization of AAT range per AN5322, etc.)

I see the Tx driver timing register described in section 4.5.51 of the datasheet, but there's not a lot of detail.  Where can I find more information?

[Ulysses HERNIOSUS · Accepted solution]

Hi,

that is all information that I can offer. Just set d_tim_man=1 and cycle through the 5 d_tim values turn on the field and see if you observe a change.

BR, Ulysses