I just finished a homemade PCB with a LPC4088 microcontroller and some other components. When I connected my board to the J-link EDU probe over JTAG connector and start Jlink Commander, Cortex-M4 microprocessor inside LPC4088 isn't found like microprocessor is found in this video.
If everything was correct J-link Commander should find the Cortex-M4 microcontroller so I assume that I made mistake when I was designing the schematics.
I doubt that I made mistake with a power section of the board. The mistake is probably part of JTAG connections which I am quite new to. Yoou might want to open the image in new tab and zoom in in order to better see the schematics.
This is my first MCU board and I really have to make it work...