NXP Semiconductors PCAL6408A-ARD, User Manual, Page: 18 / 25

NXP Semiconductors
UM11704
PCAL6416AEV-ARD evaluation board
firmware, assuring that is compliant with IC specifications. Use PCAL6416A datasheet to
read details about internal registers of the DUT IC and data exchange between internal
controller and the EVK. Assure for correct electrical connections and avoid data conflicts
on the signal lines, to prevent IC damage.
7 GUI description
A GUI application is available for the three EVK boards from NXP Semiconductors. The
application is common for all EVKs and the development boards of the entire family of IO
expanders produced by NXP Semiconductors (PCAL6408A-ARD, PCAL6416AEV-ARD,
PCAL6524EV-ARD, and PCAL6534EV-ARD).
This section describes the GUI application and how the user can control the
PCAL6416AEV-ARD daughter board from the graphical interface. First, install the GUI
package and software on the PC (Windows 10). For more details, see UM11581 .
Once installation is complete, assure that one of the mentioned three EVKs with attached
PCAL646408A-ARD daughter board is connected to PC and powered-on. Open
NXP_(PCAL65x4,PCAL64xxA) GUI application. An interface will appear as is shown in
Figure 10 :
The GUI application starts with
Settings
tab (marked with red arrow). The left side of the
window displays
Board settings
. The section provides the following settings:
• Select EVK:
displays the list of EVKs. Selecting a wrong EVK board causes the
connection to fail and a pop-up window with the message: “Unable to Connect with
EVK” appears on the screen.
• Select COM port: displays port selected for the communication. The port is
automatically selected by the system (in the picture is COM 3).
• Select Board: allows the user to select the correct daughter board (the application
can support four different boards). In Figure 10 , the selected board is PCAL6416A.
Selecting a wrong daughter board causes the connection to fail and a pop-up window
with the message:
“Unable to Connect with Daughter Card”
appears on the screen.
In the right side of the window is located Device setting section. The following settings
are provided:
• I2C Frequency: displays the I
2
C-bus clock frequency (100kHz and 400kHz). With the
Set button the value is written in the internal register of PCAL6416A IC.
• Address Selection: allows the user to select the hardware address of PCAL6416A.
• Reset Chip:
reset the internal register of PCAL6416A.
Assuming the correct parameters are chosen, clicking the
Connect
button establishes
the connection with the EVK. In the bottom side of the GUI window a status bar shows in
real time the status regarding connection between PC and the EVK.
UM11704 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1.0 — 1 December 2021
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