NXP Semiconductors
QN9090
QN9090-DK006 Development Kit User Guide
UM11355
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© NXP Semiconductors N.V. 2020. All rights reserved.
User Guide
Rev.1.0
— 15 January 2020
10 of 19
•
power the QN9090 Target section of the board from the FTDI header (J1)
or the Jack connector (J4)
•
and fit a jumper to JP2 across pin 1 - 2 (Local Target).
•
Jumper JP1 must be open or fitted across pin 2
– 3 to enable the target
QN9090.
•
The on-board Link2 debug probe must be unpowered, by leaving USB mini
(J15) unconnected.
2.9.3 On-Board Link2 flash programing
To program the Link2 Flash the Link2 MCU must be in DFU mode. If the Link2 already
has a valid image in the flash, you will need to force it into DFU mode by placing a
jumper shunt on JP5 across pin 1 - 2, then power the board by connecting the mini USB
J15 to a host computer. Link2 MCU programming is performed using the LPCScrypt
https://www.nxp.com/design/microcontrollers-developer-resources/lpc-
microcontroller-utilities:LPC-UTILITIES
). Instructions for using the tool are located at the
same web page.
2.9.4 Using the DK6 to debug an off-board target
The DK6 board’s Link2 debug probe may be used to debug an off-board target MCU.
The on-
board Link2 debug probe is capable of debugging target MCU’s with a VDDIO
range of 1.6V to 3.6V. To keep the on-board target QN9090 MCU from interfering with
the SWD interface:
•
JP1 must be fitted across pin 1 - 2.
•
The Link2 debug probe SWD is connected by a ribbon cable between the
P1 connector to the off-board target MCU SWD interface.
•
Power the DK6 board from the Link USB connector J15,
•
Fit jumper JP2 across pins 2 - 3 (External Target).
