The main reason for using the 4200 is to take TCP/IP mesages and generate signals on the Auxilairy bus (PA0-7, PB0-7)
When I am running DHCP with a TCP/IP socket I find that at least the
PB2/3 lines are being used. (I see the LEDS on the board flashing
and my scope confirms the signals changing) I checked the 4200 and the
carrier board schematics and nothing is connected to these pins.
Why are this signals changing?
How can I disable this?
– Gert van Loo