MAX9590EVCMAXQU [MAXIM]
MAX9590 Evaluation Kit/Evaluation System;
| 型号： | MAX9590EVCMAXQU |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX9590 Evaluation Kit/Evaluation System |
| 文件： | 总9页 (文件大小：723K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0561; Rev 0; 5/06
MAX9590 Evaluation Kit/Evaluation System
General Description
Features
The MAX9590 evaluation kit (EV kit) is a fully assembled
and tested circuit board that evaluates the MAX9590.
The MAX9590 EV kit provides 14 programmable volt-
age references and 4 static voltage references for
gamma correction in TFT-LCD displays. Two register
banks are provided to store two sets of gamma refer-
ence values. Gamma values are programmed into the
banks through the I2C interface, and the settling time
for outputs is less than 0.5µs.
♦ 14 Programmable Reference Voltages
♦ 4 Static Reference Voltages
♦ Max 16.5V Operating Voltage
♦ Output Swing within 150mV of Rails
♦ Peak Current Greater than 200mA
♦ Output Channels Tri-Stated During Wake-Up
♦ USB Powered (EV System Only)
♦ Proven PC Board Layout
The 14 programmable reference voltages are divided
evenly into seven upper and seven lower voltages for
the upper and lower gamma curves of LCD column dri-
vers. The 14 programmable buffers wake-up in a high-
impedance state until the registers are programmed.
This protects the LCD system from high transient cur-
rents during the startup phase.
♦ Free Windows 98SE/2000/XP-Compatible
Evaluation Software at www.maxim-ic.com
♦ Fully Assembled and Tested
®
The EV kit includes Windows 98SE/2000/XP-compati-
ble software that provides a graphical user interface
(GUI) for exercising the features of the MAX9590.
Component List
MAX9590 EV Kit
The MAX9590 evaluation system (EV system) consists
of the MAX9590EVKIT and a companion CMAXQUSB
serial interface board. The CMAXQUSB interface board
allows a PC to control an I2C interface using its USB
port. Order the MAX9590EVCMAXQU for a complete
PC-based evaluation of the MAX9590. Order the
MAX9590EVKIT if you already have a MAX9590 com-
patible serial interface.
DESIGNATION QTY
DESCRIPTION
C1–C18
0
Not installed, ceramic capacitors (0603)
0.1µF 10ꢀ, 25V Xꢁ7 ceramic
capacitors (0603)
TDK C1608Xꢁ71E104K or
Taiyo Yuden TMK10ꢁBJ104KA
C19, C21, C23,
C24
4
10µF 20ꢀ, 25V X57 ceramic
capacitors (1210)
C20, C22, C25
3
Murata G7M32D761E106M
J1
J2
1
0
20-pin, 2 x 10 right-angle receptacle
Not installed, 2 x 20 straight male
header
Windows is a registered trademark of Microsoft Corp.
JU1
1
1
0
2
2
2
1
0
3-pin header
JU2
5-pin header
Ordering Information
71–718
719, 720
721, 725
722, 724
723
Not installed, resistors (0603)
1kΩ 5ꢀ resistors (0603)
100Ω 1ꢀ resistors (0603)
4.32kΩ 1ꢀ resistors (0603)
1.21kΩ 1ꢀ resistor (0603)
Not installed, resistors (0603)
PART
TYPE
INTERFACE
2
User-supplied I C
interface
MAX9590EVKIT
EV kit
CMAXQUSB interface
board
MAX9590EVCMAXQU EV system
726, 72ꢁ
LCD gamma reference voltage generator
(38-pin QFN-EP, ꢁmm x 5mm)
Maxim MAX9590ETU
U1
1
—
—
2
1
Shunts
MAX9590 EV kit PC board
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX9590 Evaluation Kit/Evaluation System
Procedure
Component List (continued)
Please visit the Maxim Integrated Products website
(www.maxim-ic.com) to download the most recent ver-
sion of the EV kit software 9590RXX.ZIP. The MAX9590
EV kit is fully assembled and tested. Follow these steps
to verify board operation. Do not turn on the power sup-
ply until all connections are completed.
MAX9590 EV System
PART
MAX9590EVKIT
CMAXQUSB
QTY
DESCRIPTION
MAX9590 EV kit
CMAXQUSB board
1
1
1) Set jumper JU1 on the CMAXQUSB at 3.3V or 5V output.
Component Suppliers
2) Set DIP switch SW1 on the CMAXQUSB to the ON
position (SCL and SDA line pullup resistors
enabled).
SUPPLIER
PHONE
770-436-1300 www.murata-northamerica.com
Taiyo Yuden 847-925-0888 www.t-yuden.com
TDK 847-803-6100 www.component.tdk.com
WEBSITE
Murata
3) Set the jumpers on the MAX9590EVKIT as follows:
JU1: pins 1-2 (EV kit powered by CMAXQUSB)
JU2: pins 1-2 (default I2C write address is 0xE8)
Note: Indicate you are using the MAX9590 when contacting
these component suppliers.
4) Connect the MAX9590 EV kit 2 x 10-pin receptacle
(J1) to the CMAXQUSB 2 x 10-pin header (P3).
5) Connect the 9V to 16.5V DC power supply to the
AVDD and AGND pads on the EV kit and turn on
the power supply.
MAX9590 EV Kit Files
FILE
DESCRIPTION
6) Install the MAX9590 evaluation software on your
computer by running the INSTALL.EXE program. The
program files are copied and icons are created for
them in the Windows Start menu | All Programs |
Maxim MAX9590 Evaluation Kit by default.
Installs the EV kit files on
your computer
INSTALL.EXE
MAX9590.EXE
HELPFILE.MHT
FTD2XX.INF
Application program
Help file
7) Connect the USB cable between the PC’s USB port
and the CMAXQUSB’s USB connector (P2). A New
Hardware Found window should pop up. If you do not
see this window after about 30 seconds, try removing
the USB cable from the CMAXQUSB and reconnect it.
Administrator privileges are required to install the
USB device driver on Windows 2000 and Windows
XP. Refer to the TROUBLESHOOTING_USB.PDF file
if problems are experienced during this step.
USB device driver file
Uninstalls the EV kit
software
UNINST.INI
USB driver installation help
file
TROUBLESHOOTING_USB.PDF
Quick Start
Required Equipment
• The Maxim MAX9590EVCMAXQU evaluation system:
MAX9590EVKIT
8) 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\MAX9590 (or the directory cho-
sen during installation) using the Browse button.
CMAXQUSB serial interface board (USB cable
included)
• +9V to +16.5V, 3A power supply
• DC voltage measurement equipment, e.g., voltmeter
9) Start the MAX9590 EV kit software by opening its
icon in the Start | All Programs | Maxim MAX9590
Evaluation Kit.
or equivalent
• A user-supplied Windows 98SE/2000/XP PC with an
available USB port
10) The program automatically detects the MAX9590
address and displays it on the bottom of the win-
dow. By default, the software sets the MAX9590 in
Standard operation mode and selects bank A to be
buffered to the output.
Note: In the following section(s), software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and under-
line refers to items from the Windows 98SE/2000/XP
operating system.
11) Measure the voltages on the VREFU_H, VREFU_L,
VREFL_H, VREFL_L pads, and type the values in
2
_______________________________________________________________________________________
MAX9590 Evaluation Kit/Evaluation System
the corresponding fields in the Reference Voltages
(V) group box.
surement equipment, verify that the output voltages
are close to the corresponding expected voltages.
12) Move the slide bars or type in appropriate register
values for any output channels, and click the Load All
Values To Registers button. Using the voltage mea-
Figure 1. MAX9590 Evaluation Software Main Window
_______________________________________________________________________________________
3
MAX9590 Evaluation Kit/Evaluation System
Register Addressing Mode
Detailed Description of Software
The Standard and Register selections in the Register
Addressing Mode box set the MAX9590 operation
mode.
The evaluation software’s main window is shown in
Figure 1.
2
I C Address Setting
Output Bank Select
The Bank A, Bank B, and A, B Alternating selections
in the Output Bank Select box select the set of refer-
ence voltages buffered to the outputs, either bank A,
bank B, or alternating between bank A and bank B with
1 second hold time for each bank.
If the Auto Detect Address checkbox is checked, the
software automatically detects the I2C address of the
MAX9590. The MAX9590’s I2C slave address is dis-
played on the status bar of the software window and
the address pulldown menu. If an address is manually
selected in the address pulldown menu, then the soft-
ware probes the designated address and displays
appropriately. If no acknowledgement is received from
the EV kit, a pop-up window is opened and the user is
directed to properly set JU2 on the EV kit.
Change Register Values
Register values can be set in three different ways. First,
a user can move the slide bars and monitor the register
values and expected output voltages in the corre-
sponding fields. Second, a user can type in register
values directly. Last, a user can type in expected out-
put voltages and the software calculates and displays
the closest register values for the user.
Upper and Lower DAC Reference Voltages
The upper and lower DAC reference voltages are gen-
erated by either an on-board resistor-divider network or
external references applied on the VREFU_H,
VREFU_L, VREFL_H, and VREFL_L pads. The actual
voltages on these four pads MUST be captured and
typed in the fields within the Reference Voltages (V)
group box for the calculated DAC output voltages
shown in the Upper DAC Channels/Lower DAC
Channels group boxes to be correct.
When a register value is changed, the corresponding
field changes its color to red. A user should synchro-
nize the GUI fields and actual device registers by click-
ing either the Load button (in register mode) or the
Load All Values To Registers button (in standard
mode).
The Load All Reg Values From File button is used to
load all the register values and reference voltages from
a text file. The Save All Reg Values To File button is
used to save all the register values and reference volt-
ages on the current GUI to a text file.
The transfer function for upper DAC channels is:
D
V
= VREFU_L +
× VREFU_H − VREFU_L
(
)
OUT
255
Register read/write operations can take place regard-
less of the output bank setting; for example, the user
can change bank B registers when bank A is buffered
to the outputs.
The transfer function for lower DAC channels is:
D
V
= VREFL_L +
× VREFL_H − VREFL_L
(
)
OUT
255
Register Power-On Reset
Click the Register Power On Reset button to set all the
registers to the default power-on values. The MAX9590
cannot be set to high-impedance output mode by the
Register Power On Reset button.
In both formulas, D is the decimal register value.
When the evaluation software is run for the first time,
the reference voltage values in the Reference
Voltages (V) group box are loaded from an initialization
file (REF.INI). The user should measure the actual volt-
age values on the VREFU_H, VREFU_L, VREFL_H, and
VREFL_L pads and type in the values in the appropri-
ate fields on the software main window. When the pro-
gram is closed, the reference voltages in the current
fields are logged in the initialization file, so the next time
when the program is run, the reference voltages are
loaded automatically.
2
Register Mode I C Activity
The Register Mode I2C Activity group box is used for
the convenience of debugging in register mode. When
an individual register is written, the bits sent to the
MAX9590 through the I2C interface are displayed.
4
_______________________________________________________________________________________
MAX9590 Evaluation Kit/Evaluation System
Detailed Description of Hardware
Table 2. MAX9590 EV Kit Jumper JU1
EV KIT DIGITAL
SUPPLY VOLTAGE
MAX9590 EV System
The MAX9590 EV system is a PC-controlled reference
voltage generation system consisting of a MAX9590 EV
kit and the Maxim CMAXQUSB serial interface board.
JUMPER
SHUNT POSITON
CMAXQUSB interface
board supplied
1-2*
2-3
JU1
User supplied (from
DVDD and DGND pads)
CMAXQUSB Serial Interface Board
The CMAXQUSB serial interface board uses a propri-
etary design to provide SPI- and I2C-compatible inter-
faces to demonstrate various Maxim devices. Maxim
reserves the right to change the implementation of this
module at any time with no advance notice.
*Default configuration.
The analog power supply for the MAX9590 EV kit
comes from the AVDD and AGND pads; apply a +9V to
+16.5V, 3A power supply on the AVDD and AGND
pads on the EV kit.
CMAXQUSB Power Supply
Do not plug a power adapter into the P1 power jack
because power is provided from the USB port. JU1 on
the CMAXQUSB board selects the digital power-supply
voltage for the MAX9590 EV kit. Place the shunt on the
3.3V or 5V position for the MAX9590 to work properly.
MAX9590 Slave Address Description
The MAX9590 I2C address can be set by JU2. See
Table 3 for address configuration.
Table 3. MAX9590 EV Kit Jumper JU2
Table 1. CMAXQUSB Jumper JU1
MAX9590 WRITE
ADDRESS (hex)
JUMPER
SHUNT POSITION
EV KIT DIGITAL
SUPPLY VOLTAGE
JUMPER
SHUNT POSITON
1-2* (A0 connected to DGND)
1-3 (A0 connected to DVDD)
1-4 (A0 connected to SCL)
1-5 (A0 connected to SDA)
0xE8
0xEA
0xEC
0xEE
3.3V marking
5V marking
3.3V
5V
JU1
JU2
MAX9590 EV Kit
*Default configuration.
The digital power supply for the MAX9590 EV kit comes
from either the CMAXQUSB interface board or the user-
supplied external power source. Set the JU1 shunt on
pin 1 and pin 2 (default configuration) to use the power
supply from the CMAXQUSB interface board. To evalu-
ate the MAX9590 with a different digital power-supply
voltage, set the JU1 shunt on pin 2 and pin 3 and apply
an appropriate voltage on the DVDD and DGND pads.
SPI is a trademark of Motorola, Inc.
_______________________________________________________________________________________
5
MAX9590 Evaluation Kit/Evaluation System
Figure 2. MAX9590 EV Kit Schematic
6
_______________________________________________________________________________________
MAX9590 Evaluation Kit/Evaluation System
Figure 3. MAX9590 EV Kit Component Placement Guide—Component Side
_______________________________________________________________________________________
7
MAX9590 Evaluation Kit/Evaluation System
Figure 4. MAX9590 EV Kit PC Board Layout—Component Side
8
_______________________________________________________________________________________
MAX9590 Evaluation Kit/Evaluation System
Figure 5. MAX9590 EV Kit PC Board Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
© 2006 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
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