MAX7314EVKIT+ Maxim Integrated, MAX7314EVKIT+ Datasheet - Page 12

• Manufacturer Part Number: MAX7314EVKIT+
• Description: Peripheral Drivers & Components - PCIs Evaluation Kit for the MAX7314
• Manufacturer: Maxim Integrated

Specifications of MAX7314EVKIT+

• Operating Supply Voltage: 2 V to 3.6 V

MAX7314 Evaluation Kit
The contents of the Port Configuration Registers;
Output Intensity Registers; Blink Phase Registers;
Master, O16; and Configuration Registers can be moni-
tored by opening the Register View window (Figure 5),
which is accessible by selecting the View | Register
View menu item. Refer to the MAX7314 IC data sheet
for additional register information.
Figure 5. MAX7314 Evaluation Software Register View Window
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Register View
The LED Demo button provided on the software’s main
window provides a demonstration of the EV kit’s opera-
tion. Pressing the LED Demo button results in the
WLEDs and RGBs performing a sequence of blinks,
demonstrating the LED control capabilities of the
MAX7314 device. Upon completion of the LED demo,
the device is initialized (see Table 10).
The general-purpose 2-wire interface utility can also be
used to communicate with the MAX7314. Use the
View | Interface menu item to access the utility. The utility
configures the 2-wire serial interface parameters, such as
start and stop bits, acknowledgments, and clock timing.
The 2-wire interface screen allows general-purpose 2-
wire commands to be sent using the SMBusWriteByte
and SMBusReadByte options. The interface utility only
accepts and outputs hexadecimal number format.
The Hunt for active listeners button scans the entire
2-wire address space, reporting each address that is
acknowledged. The SMBusWriteByte transmits the
device address, command, and 1 byte of data. The
SMBusReadByte transmits the device address, a com-
mand, and then retransmits the device address and
reads 1 byte of data.
For information on the differences between an I
SMBus™ interface, read Application Note 476: Comparing
the I2C Bus to the SMBus at www.maxim-ic.com.
Problem: Software reports it cannot find the on-
board interface.
•
•
•
SMBus is a trademark of Intel Corp.
Is the Power Indicator LED (D9) on?
Is the USB communications cable connected?
Has Windows plug-and-play detected the board?
Bring up Control Panel>System>Device Manager,
and look at what device nodes are indicated for
USB. If there is an unknown device node attached
to the USB, delete it. This process forces plug-and-
play to try again.
General-Purpose 2-Wire Interface Utility
General Troubleshooting
LED Demo
2
C and a