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CMAXQUSB User’s Guide
Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
Panasonic Corp.
Suntsu Frequency Control
Taiyo Yuden
TDK Corp.
PHONE
770-436-1300
800-344-2112
949-305-0220
800-348-2496
847-803-6100
WEBSITE
www.murata-northamerica.com
www.panasonic.com
www.suntsuinc.com
www.t-yuden.com
www.component.tdk.com
Note: Indicate that you are using the CMAXQUSB or MAXQ2000 when contacting these component suppliers.
Quick Start
Maxim EV systems whose ordering number ends in
EVCMAXQU are two-board sets, comprising a
CMAXQUSB interface board and an EV kit board specif-
ic to the device being evaluated. For example, the
MAX6870EVCMAXQU would be a two-board set consist-
ing of the MAX6870EVKIT and the CMAXQUSB. The fol-
lowing generic quick start procedure assumes that the
CMAXQUSB board will be used with a companion EV kit.
Required Equipment
? Any Maxim EV system with the EVCMAXQU suffix,
such as the MAX6870EVCMAXQU
Device-specific EV kit board
CMAXQUSB interface board
USB type A-to-B cable (included with the CMAXQUSB)
? Computer running Windows 98SE/2000/XP with a
spare USB port
Administrator privileges may be required when first
installing the device on Windows 2000/XP.
Procedure
Do not turn on the power until all connections are
complete.
1) Select 2.5V, 3.3V, or 5V logic by setting the
CMAXQUSB VDD SELECT jumper. See the Jumper
Tables section.
2) Ensure that the companion EV kit board’s jumper
settings are correct. Refer to your companion EV
kit’s documentation.
3) Connect the boards together.
4) Install the evaluation software on your computer by
running the INSTALL.EXE program on the installa-
tion disk. The program files are copied and icons
are created for them in the Windows Start menu.
5) Connect the USB cable between the CMAXQUSB
and the computer. When you plug in the CMAXQUSB
board for the first time, the Windows plug-and-play
system detects the new hardware and automatically
runs the Add New Hardware Wizard (if the Add New
Hardware Wizard does not appear after a minute,
unplug the board from the USB and plug it in again).
Make certain to specify the search location. Maxim
software designed for CMAXQUSB includes a copy
of the device driver in the installed software directo-
ry. Refer to Application Note 3601: Troubleshooting
Windows Plug-and-Play and USB for Maxim
Evaluation Kits for more details.
6) During device driver installation, Windows XP shows
a warning message indicating that the device driver
Maxim uses does not contain a digital signature.
This is not an error condition and it is safe to pro-
ceed with the installation.
7) Start the EV kit software by clicking its icon in the
Windows Start menu.
8) Refer to the companion EV kit’s documentation for fur-
ther instructions demonstrating its custom software.
Detailed Description of Hardware
The low-voltage RISC microcontroller, MAXQ2000-RAX
(U1), processes commands sent by a program running
on the PC. Each particular EV kit has its own custom
software specific to that kit.
The FTDI FT232BM (U2) provides the USB engine. The
USB 5V power is regulated down to 3.3V by U11 and
down to 2.5V by U3. LED1 indicates USB 5V power is pre-
sent. LED2, LED3, LED4 are general-purpose indicators.
Level translators U6 –U10 convert the MAXQ2000 ’s
2.5V logic signals to the external VDD logic level, which
is jumper-selectable for 2.5V, 3.3V, or 5V logic. U9, the
MAX3372, is a bidirectional level translator specially
designed for the I 2 C bus. DIP switch SW1 optionally
disables the on-board 1.5k ? termination resistors,
allowing the use of external, user-supplied I 2 C pullup
resistors. Level translator U10 is designed for SPI.
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