The USB C8051F Debugger provides the interface between the PC's USB port and the target device's in-system debug/programming circuitry.
The attached 10-pin DEBUG ribbon cable connects the adapter to the target board and the target device's debug interface. The USB C8051F Debugger supports both Silicon Laboratories JTAG and C2 debug interfaces. Power is provided to the adapter from the USB connection to the PC. The USB C8051F Debugger is capable of providing power to a circuit board via pin 10 of the DEBUG connector.