The PN7642 includes a USB interface, which allows USB communication with the PC.
Once the PN7642 USB communication is established, the NFC Cockpit tool can be used for RF debugging.
Note: This also requires flashing the NFC Cockpit application with the help of the mass storage mode or SWD interface.
Basically, the user has to connect a USB cable/Connector to the following PN7642 pins.
| USB Signal | PN7642 Pin |
| 5V | USB_VBUS |
| Data - | ATX_D |
| Data + | ATX_C |
| GND | GND |
See an example below. This is a very basic connection (for evaluation or debugging only) where the USB cable is directly connected to the PN7642 pads.
This situation may arise during debugging on customer hardware where the USB interface is not yet implemented on the PCB. But a user wants to debug with the help of NFC Cockpit.
Please note that the proper USB interface might require special layout rules, such as impedance, overvoltage protection, etc.. For more info, see the PN7642 EVK reference schematic or USB PCB design guide.
