I have two processors (STM and Infineon) on the same board and I have to organize communication between them. Yet I'm using Ethernet to communicate between them, but a startup time of Ethernet after turning on takes to much time (~2s). Could I setup communication over Ethernet without PHY drivers and so decrease the startup time?
If it's impossible, which interface can I use instead of it? The main requirements: fast startup time - 100 - 200 ms and communication speed not less than 10 Mb/s.