NXP Semiconductors
UM11711
PCAL6524EV-ARD evaluation board
Figure 12. Graphical interface – “CPLD” tab activated
Clicking on
SWITCH
tab, a new window appears (see
). In the left side of the
window, the parameters of the I/O connected to on-board switches (SW1 to SW4) can be
set. The parameters are:
• Latch:
enable / disable the corresponding latch of the input.
• Pull Up/Down Enable:
enable / disable the internal pull-up or pull-down resistor.
• Pull UP/Down Selection:
select the internal pull-up or pull-down resistor.
• Interrupt Mask:
enable / disable the interrupt mask for the input;
• Polarity Inversion:
enable / disable the polarity inversion function for the input;
• Interrupt Edge:
select the trigger type of the interrupt (level or edge);
• Interrupt Clear:
clear the interrupt register;
The
Write
button sets the internal registers of the DUT with the selected value in the GUI.
The on-board switches (SW1 to SW4) does not have pull-up resistors, the user should
select and activate the internal pull-up resistors from the GUI. In the right side of the
window, the
Read
button, bring back the current values of the registers on the graphical
user interface.
UM11711
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© NXP B.V. 2022. All rights reserved.
User manual
Rev. 1.0 — 19 January 2022
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