NXP Semiconductors
UM11623
PCA9959HN-ARD evaluation board
Figure 22. Graphical interface – Channels / Preset Current 3 tab activated
9 Operation example
This section details the necessary steps to operate the PCA9959HN-ARD daughter
board with one of three EVKs from the GUI. This helps the user for a quick test of the
board and to understand the register functionality. After the hardware and GUI software
was installed, follow the below steps, to turn on and off one or more LEDs, located on the
PCA9959HN-ARD daughter board:
1. Open the “NXP_GUI(PCA995x)” application on the PC.
2. In the Board Setting section, from Select EVK list, select the EVK used in the setup.
3. From the Select COM Port list, select the correct COM (if more than one is available).
4. From the Select Board list, select PCA9959.
5. Click
Connect
. When the connection is established, all onboard LEDs are turned On.
6. In the Device Setting section, click
Reset Chip
. The LEDs are turned Off, and a pop-
up window announces the successful chip reset.
7. Select “Disable” (for the “OE” input of the DUT), and click
Set all
. This disables the
driver outputs inside the DUT.
8. In the General Settings section, select "Disable" option for Auto Switch off LED on
Error, and then click
Write
to set the data to the internal register of the DUT.
9. Click
Channels
→
Grid
(see
).
10.In the new window, it can be seen all registers are set “0x0=Off” (the default value).
Select for “GD0G0” (“Grid0 Configuration”) the value: “0x1=Preset Current 1”, and
UM11623
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
User manual
Rev. 1 — 21 May 2021
28 / 32