MAX9590ETU+T

19-0561; Rev 0; 5/06 MAX9590 Evaluation Kit/Evaluation System 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 voltage references and 4 static voltage references for gamma correction in TFT-LCD displays. Two register banks are provided to store two sets of gamma reference 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 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 drivers. The 14 programmable buffers wake-up in a highimpedance state until the registers are programmed. This protects the LCD system from high transient currents during the startup phase. The EV kit includes Windows® 98SE/2000/XP-compatible software that provides a graphical user interface (GUI) for exercising the features of the MAX9590. 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 compatible serial interface. ♦ USB Powered (EV System Only) Windows is a registered trademark of Microsoft Corp. Ordering Information PART TYPE EV kit MAX9590EVKIT MAX9590EVCMAXQU EV system INTERFACE User-supplied I2C interface CMAXQUSB interface board ♦ 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 ♦ Proven PC Board Layout ♦ Free Windows 98SE/2000/XP-Compatible Evaluation Software at www.maxim-ic.com ♦ Fully Assembled and Tested Component List MAX9590 EV Kit DESIGNATION QTY C1–C18 DESCRIPTION 0 Not installed, ceramic capacitors (0603) C19, C21, C23, C24 4 0.1µF ±10%, 25V X7R ceramic capacitors (0603) TDK C1608X7R1E104K or Taiyo Yuden TMK107BJ104KA C20, C22, C25 3 10µF ±20%, 25V X5R ceramic capacitors (1210) Murata GRM32DR61E106M J1 1 20-pin, 2 x 10 right-angle receptacle J2 0 Not installed, 2 x 20 straight male header JU1 1 3-pin header JU2 1 5-pin header R1–R18 0 Not installed, resistors (0603) R19, R20 2 1kΩ ±5% resistors (0603) R21, R25 2 100Ω ±1% resistors (0603) R22, R24 2 4.32kΩ ±1% resistors (0603) R23 1 1.21kΩ ±1% resistor (0603) R26, R27 0 Not installed, resistors (0603) U1 1 LCD gamma reference voltage generator (38-pin QFN-EP, 7mm x 5mm) Maxim MAX9590ETU — 2 Shunts — 1 MAX9590 EV kit PC board ________________________________________________________________ Maxim Integrated Products 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. 1 Evaluate: MAX9590 General Description Evaluate: MAX9590 MAX9590 Evaluation Kit/Evaluation System Component List (continued) MAX9590 EV System PART QTY DESCRIPTION MAX9590EVKIT 1 MAX9590 EV kit CMAXQUSB 1 CMAXQUSB board Component Suppliers SUPPLIER PHONE WEBSITE Murata 770-436-1300 www.murata-northamerica.com Taiyo Yuden 847-925-0888 www.t-yuden.com TDK 847-803-6100 www.component.tdk.com Note: Indicate you are using the MAX9590 when contacting these component suppliers. MAX9590 EV Kit Files FILE DESCRIPTION INSTALL.EXE Installs the EV kit files on your computer MAX9590.EXE Application program HELPFILE.MHT Help file FTD2XX.INF USB device driver file UNINST.INI Uninstalls the EV kit software TROUBLESHOOTING_USB.PDF USB driver installation help file Quick Start Required Equipment • The Maxim MAX9590EVCMAXQU evaluation system: MAX9590EVKIT CMAXQUSB serial interface board (USB cable included) • +9V to +16.5V, 3A power supply • DC voltage measurement equipment, e.g., voltmeter or equivalent • A user-supplied Windows 98SE/2000/XP PC with an available USB port 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 underline refers to items from the Windows 98SE/2000/XP operating system. 2 Procedure Please visit the Maxim Integrated Products website (www.maxim-ic.com) to download the most recent version 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 supply until all connections are completed. 1) Set jumper JU1 on the CMAXQUSB at 3.3V or 5V output. 2) Set DIP switch SW1 on the CMAXQUSB to the ON position (SCL and SDA line pullup resistors enabled). 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) 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. 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. 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. 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 chosen during installation) using the Browse button. 9) Start the MAX9590 EV kit software by opening its icon in the Start | All Programs | Maxim MAX9590 Evaluation Kit. 10) The program automatically detects the MAX9590 address and displays it on the bottom of the window. By default, the software sets the MAX9590 in Standard operation mode and selects bank A to be buffered to the output. 11) Measure the voltages on the VREFU_H, VREFU_L, VREFL_H, VREFL_L pads, and type the values in _______________________________________________________________________________________ MAX9590 Evaluation Kit/Evaluation System 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 Evaluate: MAX9590 the corresponding fields in the Reference Voltages (V) group box. Evaluate: MAX9590 MAX9590 Evaluation Kit/Evaluation System Detailed Description of Software The evaluation software’s main window is shown in Figure 1. I2C Address Setting 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 displayed 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 software 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. Upper and Lower DAC Reference Voltages The upper and lower DAC reference voltages are generated 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. The transfer function for upper DAC channels is: VOUT = VREFU _ L + D × (VREFU _ H − VREFU _ L) 255 The transfer function for lower DAC channels is: VOUT = VREFL _ L + D × (VREFL _ H − VREFL _ L) 255 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 voltage values on the VREFU_H, VREFU_L, VREFL_H, and VREFL_L pads and type in the values in the appropriate fields on the software main window. When the program 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. 4 Register Addressing Mode The Standard and Register selections in the Register Addressing Mode box set the MAX9590 operation mode. Output Bank Select The Bank A, Bank B, and A, B Alternating selections in the Output Bank Select box select the set of reference 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. 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 corresponding fields. Second, a user can type in register values directly. Last, a user can type in expected output voltages and the software calculates and displays the closest register values for the user. When a register value is changed, the corresponding field changes its color to red. A user should synchronize the GUI fields and actual device registers by clicking 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 voltages on the current GUI to a text file. Register read/write operations can take place regardless of the output bank setting; for example, the user can change bank B registers when bank A is buffered to the outputs. 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. Register Mode I2C 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. _______________________________________________________________________________________ MAX9590 Evaluation Kit/Evaluation System MAX9590 EV System Table 2. MAX9590 EV Kit Jumper JU1 JUMPER SHUNT POSITON EV KIT DIGITAL SUPPLY VOLTAGE 1-2* CMAXQUSB interface board supplied 2-3 User supplied (from DVDD and DGND pads) 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. CMAXQUSB Serial Interface Board The CMAXQUSB serial interface board uses a proprietary design to provide SPI- and I2C-compatible interfaces to demonstrate various Maxim devices. Maxim reserves the right to change the implementation of this module at any time with no advance notice. 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. Table 1. CMAXQUSB Jumper JU1 JUMPER JU1 SHUNT POSITON EV KIT DIGITAL SUPPLY VOLTAGE 3.3V marking 3.3V 5V marking 5V MAX9590 EV Kit The digital power supply for the MAX9590 EV kit comes from either the CMAXQUSB interface board or the usersupplied 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 evaluate 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. JU1 *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. 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 JUMPER JU2 SHUNT POSITION MAX9590 WRITE ADDRESS (hex) 1-2* (A0 connected to DGND) 0xE8 1-3 (A0 connected to DVDD) 0xEA 1-4 (A0 connected to SCL) 0xEC 1-5 (A0 connected to SDA) 0xEE *Default configuration. SPI is a trademark of Motorola, Inc. _______________________________________________________________________________________ 5 Evaluate: MAX9590 Detailed Description of Hardware 6 J1-3 J1-5 J1-7 J1-9 J1-4 J1-6 J1-8 J1-10 J1-20 J1-19 BANK_SEL SCL AVDD R18 OPEN C19 0.1µF SCL SDA A0 STD_REG AVDD DVDD GND R17 OPEN C17 OPEN 14 R16 OPEN OUT13 13 37 OUT2 OUT14 OUT_REFL_L C18 OPEN 12 11 N.C. 9 BANK_SEL 8 38 OUT1 R2 OPEN C2 OPEN OUT_REFU_H R1 OPEN 7 N.C. 6 5 4 3 2 1 10 C23 0.1µF R26 OPEN STD_REG C25 10µF R27 OPEN OUT_REFL_H OUT8 OUT9 OUT10 OUT11 OUT12 OUT13 OUT14 OUT_REFL_L C20 10µF DVDD SCL 1 JU2 2 BANK_SEL STD_REG SCL SDA 5 3 STD_REG SCL 4 DVDD J1-18 J1-17 1 3 2 JU1 J1-16 J1-15 J1-14 J1-13 J1-12 J1-11 J1-1 J1-2 J1 DVDD DGND OUT_REFU_H OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT_REFU_L C1 OPEN C16 OPEN R15 OPEN R3 OPEN C3 OPEN 15 OUT12 36 OUT3 R14 OPEN C15 OPEN U1 35 OUT4 R5 OPEN C5 OPEN 16 OUT11 C14 OPEN R13 OPEN MAX9590 R4 OPEN C4 OPEN 17 OUT10 34 OUT5 C13 OPEN R12 OPEN R6 OPEN C6 OPEN 18 OUT9 33 OUT6 C12 OPEN R11 OPEN R7 OPEN C7 OPEN 19 OUT8 20 21 22 23 24 25 26 27 28 C11 OPEN R10 OPEN OUT_REFL_H AVDD REFU_H REFU_L N.C. N.C. REFL_H REFL_L GND CAP 29 31 OUT_REFU_L 30 GND 32 OUT7 R8 OPEN C8 OPEN C10 OPEN C21 0.1µF C24 0.1µF R9 OPEN C9 OPEN OUT_REFL_H C22 10µF R21 100Ω 1% R22 4.32kΩ 1% R23 1.21kΩ 1% R24 4.32kΩ 1% R25 100Ω 1% AGND AVDD VREFU_H VREFU_H VREFU_L VREFU_L VREFL_H VREFL_H VREFL_L VREFL_L AVDD OUT_REFL_H J2-39 J2-37 J2-35 J2-33 J2-31 J2-29 J2-27 J2-25 J2-23 J2-21 J2-19 J2-17 J2-15 J2-13 J2-11 J2-9 J2-7 J2-5 J2-3 J2-1 J2 J2-40 J2-38 J2-36 J2-34 J2-32 J2-30 J2-28 J2-26 J2-24 J2-22 J2-20 J2-18 J2-16 J2-14 J2-12 J2-10 J2-8 J2-6 J2-4 J2-2 AVDD DVDD R19 1kΩ R20 1kΩ BANK_SEL STD_REG SDA SCL VREFU_H VREFU_L VREFL_H VREFL_L Evaluate: MAX9590 MAX9590 Evaluation Kit/Evaluation System Figure 2. MAX9590 EV Kit Schematic _______________________________________________________________________________________ MAX9590 Evaluation Kit/Evaluation System Evaluate: MAX9590 Figure 3. MAX9590 EV Kit Component Placement Guide—Component Side _______________________________________________________________________________________ 7 Evaluate: MAX9590 MAX9590 Evaluation Kit/Evaluation System Figure 4. MAX9590 EV Kit PC Board Layout—Component Side 8 _______________________________________________________________________________________ MAX9590 Evaluation Kit/Evaluation System Evaluate: MAX9590 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.