NXP Semiconductors
UM11712
PCAL6534EV-ARD evaluation board
In the tab bar, from left to right the first tab is
CPLD
. Clicking on
CPLD
tab, a new window
. The user can select one of three modes:
• Count mode:
when is activated, three additional parameters (speed, direction and
counting status) can be set. For details regarding Count Mode and its additional
settings see
Write
button to send the configuration to the
daughterboard. The four-digit display in the upper (blue) area indicates the current
value of the physical LED display (D13 to D16) located on the PCAL6534EV-ARD
daughterboard.
• Direct Write Mode:
in this mode the user can set the value indicated by the LED
display on the PCAL6534EV-ARD daughterboard. The values “Up” and “Down” can be
chosen for LCD 1 (D13), while the other three digits can be set with numbers from 0 to
9. The dot for each digit can be set to be on/off individually. Clicking on
Write
button the
values will be written in the daughterboard.
• Idle Mode:
In this mode the display is off, except LCD 1 (D13) which indicates the “-“
sign.
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 SW5) 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 SW5) does not have pull-up resistors, the user should
UM11712
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User manual
Rev. 1.0 — 31 January 2022
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