19-3999; Rev 1; 5/08
MAX6966 Evaluation Kit/Evaluation System
General Description
The MAX6966 evaluation (EV) kit is an assembled and
tested PCB that demonstrates the capabilities of the
MAX6966 constant-current LED driver and port-
expander I/Os. The EV kit includes three RGB LEDs
and one white LED that can be controlled simultane-
ously by the MAX6966. The EV kit also includes PC
software that allows a user to evaluate the features of
the MAX6966 using a graphical user interface (GUI).
The MAX6966 evaluation system (EV system) includes
a MAX6966 EV kit and a Maxim command module
(CMAXQUSB).
The CMAXQUSB board connects to a PC’s USB port
and allows the transfer of SPI
TM
commands to the
MAX6966 EV kit.
♦
Proven PCB Layout
♦
Windows
®
98/2000/XP-Compatible Evaluation
Software
♦
Three RGB LEDs and One White LED
♦
Header for Access to SPI Interface Lines
♦
Fully Assembled and Tested
Features
Evaluate: MAX6966/MAX6967
Ordering Information
PART
MAX6966EVKIT
MAX6966EVCMAXQU
TYPE
EV Kit
EV
System
INTERFACE
User-supplied SPI interface
CMAXQUSB interface
board
SPI is a trademark of Motorola, Inc.
Windows is a registered trademark of Microsoft Corp.
Note:
The MAX6966 EV kit software is included with the
MAX6966 EV kit, but is designed for use with the complete EV
system. The EV system includes both the Maxim CMAXQUSB
and the EV kit. If Windows software will not be used, the EV kit
board can be purchased without the CMAXQUSB.
Component List
MAX6966 EV System
PART
MAX6966EVKIT
CMAXQUSB
QTY
1
1
DESCRIPTION
MAX6966 EV kit
Maxim command module
J2
JU1
JU2
JU3
R1
R2–R11
SW1
U1
—
—
—
MAX6966 EV Kit (continued)
DESIGNATION QTY
1
1
1
0
1
0
0
1
12
1
1
DESCRIPTION
2 x 10-pin header
2-pin header
3-pin header
Not installed (5-pin header)
4.7kΩ ±5% resistor (0402)
Not installed, resistors (0402)
Not installed (momentary switch)
Omron B3F-1000
LED driver (16 TQFN)
Maxim MAX6966ATE
Shunts
MAX6966 evaluation kit software,
CD-ROM*
PCB: MAX6966 Evaluation Kit
MAX6966 EV Kit
DESIGNATION QTY
C1
C2
1
1
DESCRIPTION
0.1µF ±10%, 6.3V X5R capacitor (0402)
TDK C1005X5R0J104K
10µF ±10%, 6.3V X5R capacitor (0603)
TDK C1608X5R0J106K
RGB LEDs
Stanley FRGB1304B
Lumex SML-LX2832SISUGSBC
White LED
Osram LW T67C-S2U1-5K8L
2 x 20 right-angle receptacle
D1, D2, D3
3
D4
J1
1
1
*The
latest version of the EV kit software can be downloaded at
www.maxim-ic.com.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX6966 Evaluation Kit/Evaluation System
Evaluate: MAX6966/MAX6967
Component Suppliers
SUPPLIER
TDK Corp.
PHONE
WEBSITE
INSTALL.EXE
MAX6966.EXE
UNINST.INI
Ftd2xx.INF
Troubleshooting_USB.PDF
Stanley Electric 800-533-5231 www.stanley-components.com
847-803-6100 www.component.tdk.com
MAX6966 EV Kit Files
Installs the EV kit files on your
computer
Executes the application program
Uninstalls the EV kit software
USB device driver file
Opens the USB Troubleshooting
Guide
Note:
Indicate that you are using the MAX6966 or MAX6967
when contacting these component suppliers.
Quick Start
Recommended Equipment
Before beginning, the following equipment is needed:
• The Maxim MAX6966EVCMAXQU evaluation system
MAX6966EVKIT
Maxim command module (CMAXQUSB)
USB cable (included with CMAXQUSB)
• One power supply
5.5V or higher (up to 7.0V) at 300mA
• A user-supplied Windows 98/2000/XP PC with an
unused USB port
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the EV kit software. Text in
bold and under-
lined
refers to items from the Windows operating system.
obtained from the Maxim website or the included
CD. The program files are copied and icons are
created for them in the Windows
Start
menu.
6) Connect the USB cable between the PC’s USB port
and the CMAXQUSB’s USB connector (P2). A
New
Hardware Found
window pops up. If you don’t see
this window after 30 seconds, remove the USB
cable from the CMAXQUSB and reconnect it again.
Administrator privileges are required to install the
USB device driver on Windows 2000/XP. Refer to
the Troubleshooting_USB.PDF file if problems are
experienced during this step.
7) Follow the directions of the
Add New Hardware
Wizard
to install the USB device driver. Choose the
Search for the best driver for your device
option.
Specify the location of the device driver to be
C:\Program Files\MAX6966
(or the directory chosen
during installation) using the
Browse
button.
8) Connect the 5.5V power supply (up to 7.0V
supported) between the MAX6966 EV kit’s VLED
and GND pads.
9) Enable the power supply.
10) Start the MAX6966 EV kit software by double-clicking
its icon in the
Start
menu. The application window
shown in Figure 1 appears, and the software con-
nects to the CMAXQUSB after a few seconds.
11) Click on
PWM Output
in the
Port 0 Configuration
group box.
12) Check the
Shutdown
checkbox in the
Global PWM
Settings
group box to disable the MAX6966’s shut-
down mode. The white LED (D4) should illuminate
on the MAX6966 EV kit.
Procedure
The MAX6966 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not enable the power supply until all
connections are completed.
1) Place a shunt on the 3.3V setting of JU1 on the
CMAXQUSB.
2) Place a shunt on pins 1-2 of JU1 on the MAX6966
EV kit (connects MISO to DOUT/OSC).
3) Place a shunt on pins 1-2 of JU2 on the MAX6966 EV
kit (3.3V for V+ supplied from CMAXQUSB).
4) Connect the MAX6966 EV kit’s 40-pin female con-
nector (J1) to the CMAXQUSB’s 40-pin male con-
nector (P4).
5) Install the MAX6966 EV kit software on your PC by
running the INSTALL.EXE program. The files can be
2
_______________________________________________________________________________________
MAX6966 Evaluation Kit/Evaluation System
Detailed Description of Software
To start the MAX6966 EV kit software, double click the
MAX6966 EV kit icon that is created during installation.
The graphical user interface shown in Figure 1
appears. Wait approximately two seconds while the
MAX6966 EV kit software connects to the CMAXQUSB.
The
Select Port
group box allows the user to select
one of the 10 MAX6966 ports to configure. Once a port
has been selected, the
Port n Configuration
group
box allows the port to be configured as a
Logic-Level
Input, Logic-Level Output,
or a
PWM Output.
The
Global PWM Settings
group box includes controls
to edit the MAX6966’s constant-current LED drivers.
The
Chip Select (CS) Run
option is inaccessible
because the CMAXQUSB cannot guarantee timing that
would ensure proper operation of this feature.
Note that the
Shutdown
feature is only enabled when
the MAX6966’s internal oscillator is enabled. To enable
the internal oscillator, the DOUT/OUT pin must be set
for DOUT and at least one MAX6966 port must be con-
figured for PWM output (at any value except 100% or
0% duty cycle).
The
Advanced | Interface
menu item allows a low-level
interface to the CMAXQUSB.
Evaluate: MAX6966/MAX6967
Figure 1. MAX6966 EV Kit Software Screenshot
_______________________________________________________________________________________
3
MAX6966 Evaluation Kit/Evaluation System
Evaluate: MAX6966/MAX6967
Detailed Description of Hardware
MAX6966 EV System
The MAX6966 EV system (MAX6966EVCMAXQU) is a
complete 10-port, constant-current LED driver and I/O
expander system, consisting of a MAX6966 EV kit and
the Maxim command module (CMAXQUSB).
Jumper Selection Tables
Tables 1 and 2 explain the functionality of the jumpers
on the MAX6966 EV kit.
Table 1. Select IN Source
JUMPER
JU1
SHUNT
POSITION
Short*
Open
DESCRIPTION
MISO connected to DOUT/OSC
MISO not connected to DOUT/OSC
CMAXQUSB
The CMAXQUSB is a Maxim command module that
provides an SPI interface bus to demonstrate various
Maxim devices. Maxim reserves the right to change the
implementation of this module at any time with no
advance notice.
*Default
position.
MAX6966 EV Kit
The MAX6966 EV kit board provides a proven layout for
evaluating the MAX6966 constant-current LED driver
and I/O expander IC and can be obtained separately
without the CMAXQUSB.
The EV kit includes three RGB LEDs (D1, D2, and D3)
and one white LED (D4). These LEDs can be enabled
and the current through each LED can be controlled
using the MAX6966 EV kit software (see the
Detailed
Description of Software
section).
The MAX6966 EV kit also includes PCB landing pads
(R2–R11) on the bottom side of the EV kit board that
can be used to add pullup resistors on every one of the
MAX6966’s P0–P9 ports.
Table 2. Select IN Source
JUMPER
SHUNT
POSITION
1-2*
2-3
DESCRIPTION
MAX6966 V+ supplied from
CMAXQUSB (3.3V)
MAX6966 V+ supplied from V+ pad
JU2
*Default
position.
4
_______________________________________________________________________________________
VLED
V+
D1
R3
OPEN
GND
J2-17
J2-15
J2-19
J2-20
MISO
12
DIN
V+
V+
V+
14
U1
P5
GND
P4
P0
SW1
1
CS
CS
MISO
SCLK
JU3
5-PIN HEADER
DIN
DOUT/OSC
SCLK
CS
JU3-1
JU3-2
JU3-3
JU3-4
JU3-5
2
3
4
J2-8
J2-6
J2-4
J2-2
J2-1
P1
P2
P3
J2-5
J2-3
J2-7
4
1
5
6
7
P6
8
P8
P7
13 DOUT/OSC P9
DIN
11
10
9
JU1
J2-18
J2-16
J2-11
J2-14
J2-12
J2-9
J2-13
4
1
4
1
R2
OPEN
DOUT/OSC
R4
OPEN
R6
OPEN
R8
OPEN
R10
OPEN
R5
OPEN
R7
OPEN
R9
OPEN
R11
OPEN
3
2
Figure 2. MAX6966 EV Kit Schematic
C2
10μF
V+
J2
2 x 10 HEADER
B
G R
3
DOUT/OSC
2
1
JU2
J1
2 x 20 HEADER
D2
3
B
G R
2
J1-2
J1-1
J1-4
J1-3
J1-6
J1-5
J1-8
J1-7
J1-10
J1-9
J1-12
J1-11
J1-14
J1-13
MAX6966
J1-16
15
SCLK
CS
SCLK
16
R1
4.7kΩ
5%
EXPOSED PADDLE
CONNECTED TO
GROUND
J1-15
C1
0.1μF
D3
3
B
J2-10
G R
2
J1-18
J1-17
J1-20
J1-19
J1-22
J1-21
J1-24
J1-23
J1-26
J1-25
J1-28
J1-27
J1-30
J1-29
J1-32
J1-31
J1-34
J1-33
DIN
J1-36
J1-35
CS
J1-38
J1-37
D4
MAX6966 Evaluation Kit/Evaluation System
Evaluate: MAX6966/MAX6967
_______________________________________________________________________________________
J1-40
J1-39
5
RF/Wirelessly
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