MAX6971EVKIT+ Maxim Integrated, MAX6971EVKIT+ Datasheet - Page 4

• Manufacturer Part Number: MAX6971EVKIT+
• Description: LED Lighting Development Tools Evaluation Kit for the MAX6971
• Manufacturer: Maxim Integrated
• Series: MAX6971r

Specifications of MAX6971EVKIT+

• Product: Evaluation Kits

Move the shunt of JU23 to the 2-3 position and apply a
36V power supply at the VLED pad. Next, reconfigure
the shunt of JU19, JU20, and JU21 to the 1-2 position.
Restart the program and click Options | RGB Option
from the main window. The RGB Option window
(Figure 2) displays the state of the RGB LEDs. The red
LEDs are connected to PORT13, the green LEDs are
connected to PORT14, and the blue LEDs are connect-
ed to PORT15. If an LED icon is selected, that entire
row will change states. A clear LED icon represents off
and a colored icon represents on.
Clicking the RGB DEMO button will always clear any
previous state of the LEDs before going into its
sequence. The LEDs will blink the following sequence
of LED: (red), (green), (blue), (red, green), (green,
blue), (red, blue), and (red, green, blue). At the end of
the sequence, all LEDs in PORT13, PORT14, and
PORT15 should be on. If the Continuous RGB Demo
checkbox is checked before the RGB DEMO button is
pressed, the demo sequence will repeat continuously.
During this routine, the RGB DEMO and CLEAR but-
tons are disabled. To stop the demo, uncheck the
Continuous RGB Demo checkbox and the RGB
DEMO and CLEAR buttons will be enabled.
Clicking the CLEAR button will turn off all the LEDs.
When in demo mode, allow the sequence to finish
before clicking the CLEAR button. If the Continuous
MAX6971 Evaluation Kit
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RGB DEMO Button
CLEAR Button
RGB Option
Options
RGB Demo checkbox is checked and the RGB DEMO
button is pressed, the CLEAR button will be disabled.
To enable the CLEAR button, uncheck the Continuous
RGB Demo checkbox.
In Figure 3, a serial interface can be used by advanced
users when clicking Options | Interface (Advanced
Users). Enter data into the Data bytes to be written
edit box and press the Send Now button.
The MAX6971 EV kit provides a proven layout for the
MAX6971. On-board level translators, serial-interface
pads, and an easy-to-use USB-PC connection are
included in the EV kit.
To use the MAX6971 EV kit with a user-supplied serial
interface, first move the shunts of jumpers JU1–JU5
and JU22 to the 2-3 position. Next, apply a 3.3V to 5V
power supply at the VCC pad (see the User-Supplied
Power Supply section). Lastly, connect user-supplied
LE, SCLK, DIN, DOUT, and OE signals to the corre-
sponding pads on the MAX6971 EV kit board.
The MAX6971 EV kit is powered completely from the
USB port by default. Move the shunt of jumper JU22 to
the 2-3 position and apply a 3.3V to 5V power supply at
the VCC pad. The user can also apply a supply voltage
up to 36V to the VLED pad after reconfiguring the JU23
to the 2-3 position.
User-Supplied Serial Interface
Description of Hardware
User-Supplied Power Supply
Advanced Users Interface
Detailed