MAX31910/11 Evaluation Kit
Evaluates: MAX31910 and MAX31911
General Description
The MAX31910/11 evaluation kit (EV kit) provides
the hardware and software (graphical user interface)
necessary to evaluate the MAX31910 and MAX31911
industrial octal digital input translators/serializers. The EV
kit includes a MAX31910AUI+ or MAX31911AUI+ installed
as well as a digital isolator and USB-to-SPI interface.
The USB to SPI Dongle is a separate PCB that can be
used to interact with the EV kit software. This dongle is
optional and is not necessary for the proper operation of
the MAX31910/11 if the user supplies the SPI interface.
This EV kit is intended for functional and parametric
evaluation of the IC only; it is not intended for EMC
testing.
S
Fully Assembled and Tested
S
USB HID Interface
S
Digital Isolator
S
Windows XP
®
OS- and Windows
®
7
OS-Compatible Software
S
RoHS Compliant
Features
S
Easy Evaluation of the MAX31910 and MAX31911
MAX31910/11 EV Kit Files
FILE
MAX31910_11EVKitSoftwareInstall.EXE
DESCRIPTION
Application
program
EV Kit Contents
S
Assembled Circuit Board including
MAX31910AUI+ or MAX31911AUI+
S
USB to SPI Dongle
S
Mini-USB Cable
Note:
The .EXE file is downloaded as a .ZIP file.
MAX31910/11 EV Kit
Ordering Information
appears at end of data sheet.
Windows and Windows XP are registered trademarks of Microsoft Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6443; Rev 0; 9/12
MAX31910/11 Evaluation Kit
Evaluates: MAX31910 and MAX31911
Quick Start
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the install or EV kit software. Text in
bold
and underlined
refers to items from the Windows operat-
ing system.
• PC with Windows XP or Windows 7 OS
• USB port
• Mini-USB cable (included)
• EV kit hardware (included)
• USB to SPI Dongle (included)
• Screw driver
• Wire
• Power supply
The MAX31910/11 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
1)
2)
3)
Connect the USB to SPI Dongle (J52) to the EV kit
connector J3.
Install jumpers on RIREF (J2) and SIN-GND (J6).
Set the EV kit hardware on a non-conductive sur-
face that will ensure that nothing on the PCB will get
shorted to the workspace.
Use the wires to connect J1 (VCC and GND) to a
power supply and tighten the screws on the wire.
Prior to starting the GUI, connect the EV kit hard-
ware to a PC using the supplied mini-USB cable, or
equivalent. The POWER LED (D50) should be green
and the COM LED (D51) should be red and slowly
flash orange.
Windows should automatically begin installing the
necessary device driver. The USB interface of the
EV kit hardware is configured as a HID device and
therefore does not require a unique/custom device
driver. Once the driver installation is complete, a
Windows message will appear near the System Icon
menu indicating that the hardware is ready to use.
Do not attempt to run the GUI prior to this message.
If you do, then you will have to close the application
and restart it once the driver installation is complete.
On some versions of Windows, Administrator privi-
leges may be required to install the USB device.
Figure 1. MAX31910/11 EV Kit GUI
Maxim Integrated
2
7) Once the device driver installation is complete,
visit
www.maximintegrated.com/evkitsoftware
to
download the latest version of the EV kit software,
MAX31910_11EVKitSoftwareInstall.ZIP.
Save the
EV kit software to a temporary folder.
8) Open the .ZIP file and double-click the .EXE file to
run the installer. A message box stating
The pub-
lisher could not be verified. Are you sure you
want to run this software?
may appear. If so, click
Yes.
9)
The installer GUI will appear. Click
Next
and then
Install. Once complete, click Close.
Required Equipment
10) Go to
Start
>>
All Programs.
Look for the
MAX31910_11EVKitSoftware
folder and click on
MAX31910_11EVKitSoftware.EXE
inside the folder.
11) When the GUI appears, the text above the status
box should indicate that the EV kit hardware is con-
nected. The COM LED (D51) will change to green.
Procedure
12) Connect field inputs to J5 or install jumpers on FIN1-
FIN8 and click
Single Read.
Detailed Description of Software
4)
5)
6)
MAX31910/11 Evaluation Kit
Evaluates: MAX31910 and MAX31911
In this section the user must provide hardware configura-
tion information about the EV kit. Select the
8 Bits
radio
button in the
Number of Bits section if MODESEL does
not have a jumper on J6. Select the
16 Bits
radio but-
ton if MODESEL is connected to GND on J6. If there are
more MAX31910/11 daisy chained to the EV kit, select
the number of devices with the
Number of MAX31910/11
combo box.
To read the input channels of the devices, select
Single
Read.
This will calculate the number of bits to read
based on the
Hardware Configuration
settings and then
display the read data in the table.
Continuous Reads
will read the input channels every 300ms and display the
Hardware Configuration
data in the table. Once the
Continuous Reads
starts,
the button text will change to
Stop
for the user to stop
the reads.
The Data table displays the 8 or 16 bits read from each
device connected to the EV kit. The first row of data is
the first 8 or 16 bits read from the device connected to
the microcontroller. The second row is the data read
from the device connected to the SIN of the first device
(see
Figure 2).
The
MAX31910/11
column displays the
device name. The device name can be changed by
clicking on the name twice. The
HEX
column displays the
data in hexadecimal format for each device. The
Input
Channels, CRC, UV Alarm,
and
OT Alarm
columns
display the data in binary format.
Data
Reads
TO MICROCONTROLLER
SOUT
MAX31910
MAX31911
SIN
SOUT
MAX31910
MAX31911
SIN
SOUT
MAX31910
MAX31911
SIN
Figure 2. MAX31910/11 Data Table
Maxim Integrated
3
MAX31910/11 Evaluation Kit
Evaluates: MAX31910 and MAX31911
Table 1. Hardware Configurations
HARDWARE ACTION
Connect Field Inputs
Adjust Current Limit
Daisy Chain MAX31910/11
Remove Isolation
Connect User-Supplied SPI
Interface
COMPONENTS
J5
J2
SIN (J6)
R58 – R61
J3
DESCRIPTION
Remove pull up jumpers FIN1-FIN8 and connect field inputs to J5.
Remove jumper on J2 and connect external resistor to the RIREF pin on
J2. Connect other end of resistor to GND.
Remove SIN jumper on J6 and connect external MAX31910/11 SOUT to
SIN on J6.
On the USB to SPI Dongle populate 0I
resistors on R58 – R61.
Remove USB to SPI Dongle from J3 and connect user SPI interface
to J3 pins. Note: This will also remove the digital isolator. See
User-
Supplied SPI interface
for more details.
Table 2. Description of Jumpers
JUMPER
J2
DESCRIPTION
RIREF:
Connects R1 to RIREF pin
DB0:
Pulls DB0 down to GND
J6*
DB1:
Pulls DB1 down to GND
MODESEL: Pulls MODESEL down to GND.
SIN:
Pulls SIN down to GND
FIN1–FIN8
Field Inputs:
Connects field input FINX to VIN
*These
inputs have internal pullups.
Detailed Description of Hardware
The USB to SPI Dongle is an optional PCB that is only
needed to interact with the MAX31910/11 software. The
user has the option to supply an external SPI interface
to communicate with the MAX31910/11. To connect a
user-supplied SPI interface, remove the dongle from J3
and connect an external SPI interface to the pins on J3.
Removing the dongle also removes the isolator, so the
user may also want to provide an external digital isolator.
User-Supplied SPI interface
Table 3. Description of LEDs
LED
D1-D8
D10
D50(POWER)
COLOR
Red
Red
Red
Green
Red
Green
DESCRIPTION
Field Input LED Driver:
Field input is logic high. Used for future devices
Fault:
MAX31910/11 has detected a fault. The field supply is too low or the IC temperature
is too high.
USB Power Fault:
a fault occurred due to over voltage limit, current limit, or thermal limit
USB Power:
USB power supply is on
Communication:
After the software has initialized the hardware the LED will flash red
when a command from the PC is received.
Initialized:
Hardware has been initialized by software.
D51(COM)
Maxim Integrated
4
MAX31910/11 Evaluation Kit
Evaluates: MAX31910 and MAX31911
Troubleshooting
All effort was made to ensure that each kit works on the first try, right out of the box. On the rare occasion that a problem
is suspected, refer to the below table to help troubleshoot the issue.
SYMPTOM
CHECK
Is the LED labeled D50 red?
SOLUTION
If yes, then the electronic fuse, U50, is in a fault state. Inspect for
electrical shorts on the PCB and make sure that the PCB is not
sitting on a conductive surface.
If not, then exit the GUI and try running it again. If D51 still does
not turn green, then exit the GUI and try connecting the USB cable
to a different USB port on the PC and wait for a Windows message
that states the hardware is ready to use. Run the GUI again.
If not, then the PCB may not be getting power from USB. Try a
different USB cable or a different USB port
Place a jumper on J6 (MODESEL) for the MAX31910/11 to be in
16-bit mode.
GUI says hardware
not found.
Does the LED labeled D51 turn
green when the GUI is running?
Are any of the LEDs illuminated?
CRC returns all 0s
or all 1s.
J6 (MODESEL)
Maxim Integrated
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