NXP Semiconductors
AN12550
PNEV5190B evaluation board quick start guide
3.3 K20 OpenSDA interface
Software for K20 will come in future:
To use the OpenSDA debug for the K82, JP24 needs to be closed (default open)
Figure 12. PNEV5190 customer evaluation board jumper
3.4 LED status indication
There is a power red LED, indicating the board is properly powered. It is driven by the
3V3 output of U6.
There are four LEDs (D1…D4) available, indicating some function of the PNEV5190B:
1. When RESET button is released, the LEDs flash to indicate that the secondary K82
FW and the PN5190 FW is working properly.
2. The blue LED indicates, that no VCOM interface is opened.
3. The green LED turns on, when the VCOM interface is opened.
4. The orange LED indicates a communication via SPI.
3.5 Jumper settings
The default jumper settings allow a direct use with the USB connector and an external
power supply. This might show limited performance due to a current limitation on the USB
host. So for real performance measurements, the external power supply should be used.
3.5.1 USB only
USB only (no external power supply) is not recommended at all. Most USB Hosts cannot
supply sufficient power over all nor handle an inrush current of 1.6 A.
3.5.2 External power supply
The default configuration requires an external 5 V DC power supply, providing at least
800 mA (up to 1.6 A inrush).
3.5.3 First-time use
Make sure that the K82 is flashed with the correct firmware NNC_uC_VCOM_03.05.09
(Compiled on Sep 24 2020 13:37:14) or later.
AN12550
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Application note
Rev. 1.5 — 23 April 2021
COMPANY PUBLIC
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