I'm new with Kinetis microcontroller, so most probably my questions will be very stupid. Sorry for that
I'm going to use a K60 microcontroller coupled with an Ethernet PHY connected by RMII mode. The PHY will be DP83848C from National.
After reading schematics of TWR-SER and TWR-K60N512, I noticed the RESET input signal of PHY is connected to PTE27 pin of microcontroller. This pin is also connected to SD_WP (I think write protect of SD card bus).
Is this signal actually used in the example codes? Is PTE27 configured and used as a GPIO? How the PHY reset behaviour is shared with SD write protect?
I tried to search in example codes, but I couldn't find the point where the PTE27 is used as a custom output reset.
If I understood well, PTE27 pin can be used as a GPIO or as RTS signal of UART4. Does this mean that I can't have a UART4 with hw flow control?