NRST pin characteristics of STM32F2xxx

[Vuha]

STM32F20x datasheet talkes about TNRST_OUT, but Figure 40 shows NRST pin as input. Which is right?

In view of point NRST can be behaved as OD output, then it will expand the external reset pulse is expanded by 20us?

e.g.

In other words, external peripherels on NRST signal will see 30us pulse.

Please give me more details for better understanding and explain it in details.

Thank you in advance.

References:

https://www.st.com/resource/en/datasheet/stm32f207vg.pdf#page=107

[Piranha]

Take a look at AN3320 section "1.3.3 System reset".