MAX6946EVKIT Maxim Integrated, MAX6946EVKIT Datasheet - Page 4

• Manufacturer Part Number: MAX6946EVKIT
• Description: LED Lighting Development Tools 10-Port Constant-Current LED Driver and I/O Expander with PWM Intensity Control
• Manufacturer: Maxim Integrated
• Series: MAX6946, MAX6947r

Specifications of MAX6946EVKIT

• Product: Demonstration Boards

The MAX6946 EV kit PCB can also be used to evaluate
the MAX6947 10-port expander. Remove the MAX6946
IC (U1) and replace it with the MAX6947 IC. The
MAX6947 is pin and function compatible with the
MAX6946, with the exception of pin 12. When evaluat-
ing the MAX6947, the OSC PC pad on the EV kit can be
used to access the AD0 pin. Refer to the
MAX6946/MAX6947 IC data sheet for a complete
description of part-to-part differences. Install a 3-pin
0.1in header at JU2 on the EV kit board and use a
shunt to configure the MAX6947 address. See Table 2
for jumper JU2 configuration.
MAX6946 Evaluation Kit/Evaluation System
Table 2. MAX6947 Slave Address
Selection (Jumper JU2)
4
POSITION
SHUNT
_______________________________________________________________________________________
1-2
2-3
Connected to GND
Connected to VDD
AD0 PIN
Evaluating the MAX6947
0x40
0x48
MAX6947 SLAVE
ADDRESS
Note: Words in boldface are user-selectable features in
the software.
The user interface (shown in Figure 1) is simple to oper-
ate. Use the computer mouse buttons or press the Tab
key to navigate through the GUI controls. The correct
I
registers of the MAX6946 when any of these controls
are used.
The software divides EV kit functions into group boxes.
The Interface group box indicates the Device
Address, I2C Bus Speed, EV kit Status, and the last
operation Command Sent and Data Sent indicators.
This data is used to confirm proper device operation.
The Global Settings box allows the user to program
the configuration register, configure the global settings
for the 10 ports, and read the ports. The tabs on the
GUI are used to configure individual or groups of ports.
The MAX6946 EV kit software features additional func-
tions to simplify operation. Automatic Diagnostics
continually probe the interface board and the MAX6946
EV kit to make sure that all communications are main-
tained and that all devices are working. These functions
will create some activity on the I
I2C Activity checkbox reduces I
gering of an oscilloscope while communicating to the
MAX6946 EV kit is made easy. The Factory Reset but-
ton programs the EV kit to the MAX6946 initial power-
up conditions.
2
C write operation is generated to update the internal
Detailed Description of
Graphical User Interface
2
2
C bus activity so trig-
C bus. The Silence
Software