UM10573
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1 — 17 October 2012
8 of 16
NXP Semiconductors
UM10573
PCA9633 demo board OM6276
If the battery is low, the red LED will flash every three seconds.
Table 3.
Modes
Switch selection
Action
Mode 1: Auto demonstration
First shows Mode 2 for 10 seconds, then shows Mode 3 for
10 seconds, and then repeats
Mode
next mode
Select
does nothing
Plus
does nothing
Minus
does nothing
Mode 2: Color wash
Goes through blends of different colors continuous
Mode
next mode
Select
toggle between smooth transitions and sharp transitions
Plus
does nothing
Minus
does nothing
Mode 3: Random color
Randomly shows different colors without blending
transitions
Mode
next mode
Select
toggle between two color sets: darker and lighter
Plus
faster
Minus
slower
Mode 4: User color
Allows a color to be chosen by selecting the amount of
each LED’s PWM output. It also selects the fifth group
PWM that is used to dim or blink the combined colors at
the same time
Mode
next mode
Select
select color PWM component: red, green, blue, amber or
white; fifth group PWM flashes as that PWM is selected
Plus
more of that color component
Minus
less of that color component
Mode 5: Multiple card chase
Uses multiple cards and the group call feature of the
PCA9633 to generate a chase pattern of 2 (yellow/red), 3
(yellow/red/green), or 4 (yellow/red/green/blue) colors. It
can be done for up to 8 boards (master plus seven slave
boards) connected via the RJ45 Ethernet sockets.
Mode
next mode
Select
select color PWM component: red, green, blue, amber or
white; fifth group PWM flashes as that PWM is selected
Plus
more of that color component
Minus
less of that color component
Mode 6: Output Enable control
Demonstrates the OE control pin input that sets the LED
outputs to high impedance. This mode changes the LED
diffuser color to purple and blinks all LEDs at the same
rate.
Mode
next mode