MAX11811_1009

19-5520; Rev 0; 9/10 MAX11811 Touch Evaluation System (TEVS) General Description The MAX11811 touch evaluation system (TEVS) demonstrates the rich features of the MAX11811 touchscreen controller (TSC) and allows its evaluation. The TEVS consists of a USB interface board (UTIBB+), MAX11811 evaluation kit (EV kit), and a 4-wire touch sensor mounted with an linear resonant actuator (LRA) motor (USB cable included). The device is a complete resistive touch-sensor controller solution that targets touch-enabled devices with small- to medium-size displays. The device enables miniaturization of consumer products due to its ultra-small size. Its low power consumption makes it attractive for portable devices. The TEVS with haptics operates directly from the USB power. Windows XP® and Windows® 7-compatible software running on a PC interfaces to the TEVS board through the computer’s USB communications port. See the Quick Start section for setup and operating instructions. The EV kit daughter board provides a proven PCB layout to facilitate evaluation of the device and must be interfaced to the appropriate I2C timing signals for proper operation. See Figures 15, 16a, and 16b for connections and appropriate voltage levels. Refer to the MAX11811 IC data sheet for timing requirements and register addresses. Hardware S Complete Evaluation System Including Features USB-to-Serial Interface (I2C) Board S Convenient Test Points Provided On-Board for Evaluates: MAX11811 Digital Interface and Analog Signals S Interfaces to Common 4-Wire Resistive Touch Sensors through Standard FPC Connectors 1.25mm Pitch 1mm Pitch 0.5mm Pitch S Built-In LDOs and Level Translators for Operation with 1.8V, 3.0V, and 3.6V S IR-Based Driver and Proximity Sensor Included** S Integrated Haptic Controller and Driver Motor for Motor-Based Haptic Feedback Software S User-Friendly GUI Interface (Microsoft Windows XP and Windows 7-Compatible USB Interface and Drivers) S Easy Access to TSC Configuration Registers and Status Registers S Direct and Autonomous Conversion-Mode Demonstration Capability S Ability to Capture Raw Data and Display the Data in Either Conversion Mode EV System Contents List QTY 1 1* DESCRIPTION Software and driver CD-ROM. EV kit daughter board (with the TSC mounted on it, but can be separated from the TEVS for evaluation of the TSC in the user setup). USB interface board (UTIBB+). This acts as a gateway converting and accepting data from the USB port to I2C for the EV kit. The EV kit plugs into the UTIBB+. 4-wire touch sensor mounted with an LRA motor. USB cable for power and communication. S Pseudo Multi-Touch Demonstration Ordering Information PART MAX11811TEVS+ TYPE EV System INTERFACE TYPE I2C +Denotes lead(Pb)-free and RoHS compliant. 1* 1* 1 *Mounted on a 0.125in x 3.5in x 9in Plexiglas base. Windows and Windows XP are registered trademarks of Microsoft Corp. **The GUI does not support this feature. _______________________________________________________________ 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. MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 MAX11811TEVS+ Block Diagram HAPTIC I2C USB INTERFACE TO HOST PC Y+ X+ MOTOR MAX11811 USB INTERFACE BOARD (UTIBB+) IRQ MAX11811 1.8V TO 3.6V/GND EV KIT+ YX- 4-WIRE RESISTIVE TOUCH SCREEN FPC CONNECTOR Component Lists MAX11811 Interface Board DESIGNATION A0/CSB, A1/DOUT, CSB, EN1B, EN2B, GND100, GND101, GND102, GPIO_K1–GPIO_ K8, MISO, P1_4– P1_7, P3_4–P3_7, PIRQB, SCL, SCL/ CLK, SCLK, SDA, SDA/DIN, TIRQB, U2-PIN1, U2-PIN20 C1, C2, C11, C13 QTY DESCRIPTION DESIGNATION C20, C21 QTY 2 DESCRIPTION 10pF Q5%, 50V C0G ceramic capacitors (0603) TDK C1608C0G1H100J 33000pF Q10%, 16V X5R ceramic capacitor (0603) Taiyo Yuden EMK107BJ333KA Not installed, capacitors 1.5A, 26I ferrite beads (1206) Steward MI1206K260R-10 Loops for test with 2 vias (use 20AWG wire to make loops) Not installed, headers 2-pin headers 3-pin headers 21-position SMD female connector Hirose DF9-21S-1V(32) 5-position mini-USB connector Hirose UX60A-MB-5ST 34 Test points C22 C26, C27, C28 FB1, FB2 GND103, GND104 1 0 2 2 4 1FF Q10%,16V X5R ceramic capacitors (0603) TDK C1608X5R1C105K 10FF Q20%, 6.3V X5R ceramic capacitors (0603) TDK C1608X5R0J106M 0.1FF Q10%, 50V X7R ceramic capacitors (0603) TDK C1608X7R1H104K 22pF Q5%, 50V C0G ceramic capacitors (0603) TDK C1608C0G1H220J J1–J5, J11–J17, J22 J6, J7 J8, J9, J18, J19 J10 0 2 4 1 C3, C6, C12, C14 C4, C5, C9, C10, C15–C19, C23, C24, C25 C7, C8 4 12 J20 1 2 2 ______________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Component Lists (continued) MAX11811 Interface Board (continued) DESIGNATION J21 LED2, LED3, LED4 R1, R2 R3, R4, R10, R19, R32–R39, R40, R41 R5 R6 R7 R8, R22 R20 R9, R16, R17 R11–R14 R15, R18 R21 R23, R24 R25 R26 R27 R28 R29, R30, R31 U1, U7 QTY 1 3 2 0 1 1 1 2 1 3 4 2 1 2 1 1 1 1 3 2 DESCRIPTION Dual-row JTAG header, 0.1in centers, gold plated RGB clear LEDs (0805) Lumex Opto SML-LX0805SIC 4.7kI resistors (0805) U5 Not installed, resistors 196kI Q1% resistor (0805) 590kI Q1% resistor (0805) 61.9kI Q1% resistor (0805) 100kI Q1% resistors (0805) 100kI resistor (0805) 215I resistors (0805) 0I resistors (0805) 51kI resistors (0805) 169kI Q1% resistor (0805) 27I resistors (0805) 1.5kI resistor (0805) 2.2kI resistor (0805) 470I resistor (0805) 10kI resistor (0805) 3.3kI resistors (0805) Adjustable output LDO regulators (5 SC70) Maxim MAX8512EXK+ 8-channel level translator (20 TSSOP) Maxim MAX3001EEUP+ — *EP = Exposed pad. 4 Y2 Y3 — 1 0 5 U9 Y1 0 1 U8 1 U6 1 1 DESIGNATION U3 U4 QTY 1 1 DESCRIPTION LDO regulator (5 SC70) Maxim MAX8511EXK25+ USB-to-serial UART (32 LQFP) FTDI FT232BL 1Kb, 1.8V SRL EEPROM (8 SO) Atmel AT93C46EN-SH-B Microcontroller (68 QFN-EP*) Maxim MAXQ2000-RAX+ Octal-level translator (12 TQFN-EP*) Maxim MAX3395EETC+ Not installed 16MHz crystal ECS ECS-160-20-5PXDN-TR 6MHz crystal ECS ECS-60-20-5G3XDS-TR Not installed, crystal Bumpers (rubber feet, on bottom of board) 3M SJ-5306 (clear) Shunts (J8, J9, J18, and J19) Sullins STC02SYAN U2 1 _______________________________________________________________________________________ 3 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 MAX11811 EV Kit Daughter Board DESIGNATION C1–C5 C6, C9 QTY 0 2 DESCRIPTION Not installed, capacitors 10FF Q20%, 6.3V X5R ceramic capacitors (0603) TDK C1608X5R0J106M 0.1FF Q10%, 50V X7R ceramic capacitor (0603) Murata GRM188R71H104K 220pF Q5%, 50V C0G ceramic capacitor (0603) TDK C1608C0G1H221J 1FF Q10%, 25V X5R ceramic capacitor (0603) TDK C1608X5R1E105K DESIGNATION J4 J5, J6, J7 J8 J9–J12 LED1 R1–R5, R7, R8, R9, R17, R18, R19 R6 R10 R11, R12, R13, R15 R16 R20 16 Test points U1 1 4-position SMD connector FCI SFW4R-1STE1LF 21-position SMD male connector Hirose DF9-21P-1V(32) 4-position SMD connector, gold Hirose FH19C-4S-0.5SH(25) 1 QTY 0 3 1 4 1 11 1 1 0 1 1 DESCRIPTION Not installed, header 2-pin headers SMT connector with through hole Molex 39-53-2044 3-pin headers Red LED (0603) Lite-On LTST-C190CKT 0I resistors (0603) 215I Q1% resistor (0603) 100kI Q1% resistor (0603) Not installed, resistors 5.11kI Q1% resistor (0603) 32.4I Q1% resistor (0603) Touch-screen controller (20 TQFN-EP*) Maxim MAX11811ETP+ SMD proximity sensor, IR Avago Tech HSDL-9100-021 Photo sensor Agilent APDS-9002 Shunts (J9, J10) Sullins STC02SYAN C7 1 C8 1 C10 GND, GND1, GND3, GPI, GPO, PGND, VBAT, VDD, VDDIN, VDDM, VDDP, VPD, X+, X-, Y+, YJ1 1 U2 U3 — *EP = Exposed pad. 1 1 2 J2 1 J3 1 Vendor Specifications Source: AAC Acoustic Technology (www.aacacoustic. com) (see Table 1). Densitron and Fujitsu are approved panel vendors for resistive touch-screen controllers from Maxim (see Tables 2 and 3 for recommended touch panels). Table 1. AAC LRA Motor Specification Part Number Weight Rated Voltage Nominal Operating Current Maximum Input Voltage Operating Temperature Range Storage Temperature Range ELV-10ES 2.5g (nominal) 1.41VRMS 60mA max 1.875VRMS -20NC to +70NC -40NC to +80NC Motor Vendor and Specifications Touch-Panel Vendor and Specification 4 ______________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Table 2. Densitron 4-Wire Resistive Touch-Panel Specification Part Number Screen Diagonal Dimension (W x H x D) Viewing Area Active Area Width (mm) Active Area Height (mm) Package Mode Transparency DTS408-0380-00 3.8in 91mm x 72mm x 0.95mm 81mm x 63mm 79mm 58mm Film glass 80% DTS408-0280-00 2.8in 70mm x 55mm x 1.4 mm 59.6mm x 46.1mm 58mm 44mm Table 3. Fujitsu 4-Wire Resistive TouchPanel Specification Part Number Outer Dimension Transparent Area Active Area Flex Tail Glass Thickness PET Film Features Transparency T010-1401-T670 61.4mm x 80.3mm 54.4mm x 71.2mm 51.4mm x 68.2mm 30mm 0.7mm Clear 80% Figure 1. Complete MAX11811 Touch Evaluation System (TEVS) Photo _______________________________________________________________________________________ 5 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 HAPTIC USB INTERFACE TO HOST PC I2C Y+ X+ MOTOR 4-WIRE RESISTIVE TOUCH SCREEN MAX11811 USB INTERFACE BOARD (UTIBB+) IRQ 1.8V TO 3.6V/GND MAX11811 EV KIT+ YXFPC CONNECTOR Figure 2. MAX11811 Touch Evaluation System (TEVS) Block Diagram Quick Start 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 underlined refers to items from the Windows operating system. 3) The software comes with the USB driver and a GUI application. Unzip the files and save the contents in an easily accessible location. Locate the Setup.exe file and double-click on it, then follow the instructions for installation. The driver for the EV kit is installed in the following location: C:\MAXIM TSC USB DRIVER CDM20602 The application along with its supporting files is located at: C:\Program Files\Maxim Integrated Products\ MAX118xx EVS 4) 5) 1) Before plugging the TEVS into an available port on a Windows XP or Windows 7 PC, the TEVS software must be installed. Ensure that the jumpers on the UTIBB+ board are in the following positions: J8: 2-3 J9: 2-3 J19: 1-2 Procedure (TEVS Software and USB Driver Installation) 6) 2) 7) A shortcut to the application executable file is created on the desktop and in the Start | Programs menu. To uninstall the software, go to My Computer | Add or Remove program. 8) 6 ______________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Detailed Description of Hardware Ensure that the MAX11811 EV kit daughter board is properly mounted on the UTIBB+ and the touch-screen panel is properly connected to the daughter board. The daughter board houses the touch-screen controller IC. This module processes the data from the touch-screen panel connected to it and streams it out to the UTIBB+ interface board. The UTIBB+ acts as an intermediary gateway that converts the I2C (signal levels and protocol) into the USB for processing by the PC. The UTIBB+ includes a MAXQ2000 microcontroller to carry out this task. Note: Install the software before starting this step. Connect the TEVS to the PC using the USB cable provided. A dialog box appears, as shown in Figure 3. Click on the Install from a list or specific location (Advanced) radio button and then press the Next > button. Type C:\MAXIM TSC USB DRIVER CDM20602 in the edit box, as shown in Figure 4, or press the Browse button to find the CMAXQUSB driver folder. Press the Next > button to proceed. During the installation steps, a Hardware Installation warning message is displayed, as shown in Figure 5. Press the Continue Anyway button to proceed. Follow all the steps that come up next and exit when done. At the end of the process, the driver is installed and the device is ready to be used. Disconnect and plug the device back in again. Hardware Installation Figure 3. Found New Hardware Wizard Dialog _______________________________________________________________________________________ 7 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 4. Search for the Best Driver Figure 5. Windows Logo Testing Warning 8 ______________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 After successful installation of the driver, connect the TEVS to the PC using the USB cable. Start the GUI by double-clicking on the MAX118xxEVS .exe file. Following a successful communication link, the GUI indicates what it has found at two locations on the GUI: 1) The window caption: MAX11811 4-wire Advanced Touch Screen Controller 2) The status bar: TSC Communication: I2C TSC device found I2C Addr. = 0x96 USB comm. successful Registers Tab The Registers tab shown in Figure 6 displays a successful communication link with a TSC device. This tab displays the registers related to X, Y, Z1, and Z2 measurement of the device. The user can manipulate the register values by changing the binary bit patterns on the right or the hex values on the left. Refer to the MAX11811 IC data sheet for details on the registers. Upon startup, factory-default values of the TSC registers from the MAX11810-11_init.ini files are loaded onto the GUI and then written into the TSC. The user can change the factory-default values in the MAX11810-11_init.ini file, with new values entered by the user on the GUI by selecting the File | Save option from the menu bar. This overwrites the factory-default values in the MAX11810-11_init.ini file. The user also has the option to save the register values on the GUI screen under a different name by selecting the File | Save As option, and to open and load a previously saved file by selecting the File | Open and Load option. The GUI automatically writes to the TSC when a new .ini file is opened and loaded. However, when the user individually manipulates bits on the GUI screen, it must be followed by pressing the Write Registers button. The Read Registers button reads all the registers from the TSC and displays it in the binary and hex fields. At any time, the computer mouse can be scrolled over a checkbox (the bit indicators) and the status with a description of the bit is indicated by the tool tip. Note: Any changes on the GUI must be followed by a press of the Write Registers button for the value to be loaded into the TSC. MAX11811 TEVS GUI Description Haptic Registers Tab The Haptic Registers tab holds registers for configuring the haptic patterns (refer to the MAX11811 IC data sheet for details on the registers). The user can manipulate the values through the drop-down combo boxes and the various checkboxes. As in the Registers tab, the factory-default values from the MAX11810-11_init.ini files are loaded onto the GUI and then written into the TSC at startup. The quickest way to test the haptic patterns is to use the preprogrammed set of values given in the drop-down combo boxes. The drop-down combo box in green is for the linear resonant actuator (LRA) motor and the dropdown combo box in yellow is for the eccentric rotating mass (ERM) motor (see Figure 7). The user also has the ability to Enable Haptics (checkbox) and Generate Haptic (button). A delay can also be entered in milliseconds for the haptic to be generated through the Haptic Delay edit box. Any manual changes made to the registers should be followed by pressing the Write Registers button for the value to be sent to the TSC. As in the Registers tab, the user can change the factorydefault values in the MAX11810-11_init.ini file, with new values entered on the GUI using the File | Save option from the menu bar. This overwrites the factory-default values in the MAX11810-11_init.ini file. The user also has the option to save the register values on the GUI screen under a different name using the File | Save As option, and to open and load a previously saved file by using the File | Open and Load option. Touch Data Tab The Touch Data tab displays the user inputs on the touch panel on a screen. The user can make various selections to display a combination of X, Y, Z1, and Z2 data along with their processed/mathematical interpretation. As in the Haptic Registers tab, the user can Enable Haptics (checkbox) and also apply a delay in milliseconds through the Haptic Delay edit box. The drop-down combo box with preprogrammed haptic patterns is also available in this tab for both the LRA and ERM motor. The TSC has two modes of operation, direct and autonomous. Refer to the MAX11811 IC data sheet for more details. Direct Mode: Direct mode can be selected in the Registers tab by selecting it in the Operating Mode 9 _______________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 6. Registers Tab 10 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 7. Haptic Registers Tab ______________________________________________________________________________________ 11 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Configuration register, or by selecting it in the Touch Data tab, as shown in Figure 8. Autonomous Mode: Autonomous mode can be selected in the Registers tab by selecting it in the Operating Mode Configuration register, or by selecting it in the Touch Data tab, as shown in Figure 9. Raw Data The Raw Data tab (Figure 10) displays a stream of raw data collected during the operation of the TSC. This data can be saved for data analysis by pressing the Save Data button. Multi-Touch Tab The Multi-Touch tab (Figures 11, 12, and 13) gives a simple demo of the multi-touch on a resistive panel. Use the touch panel to enlarge and reduce the picture found in this tab. This works only in the autonomous mode. Contact the factory for details on this feature. Proximity Sensing Tab The GUI currently does not support this feature. However, this feature is available in the TEVS hardware and the TSC chip fully supports this feature, as described in the MAX11811 IC data sheet. Reg. Data Snd/Rcv Tab The Reg. Data Snd/Rcv tab lets the user send and receive multiple data to the TSC registers. Figure 14 shows an example where the first line is writing 0xF1 to register 0x01 (the Activate checkbox must be checked). The second line reads register 0x01 with what was written in the first line. The TSC + Eval. Sys. Response (Hex) box shown in Figure 14 displays the whole protocol and may be of interest while debugging only. The 4F 4B 00 is the response from the TEVS following a successful write and is the ASCII OK, 5A 00 01 F1 is the response from the TEVS for a request read, 5A is a sync byte, 00 is reserved, 01 indicates that 1 byte of data is to follow, and F1 is the (1 byte) data. The TSC Response ONLY (Hex) box displays the TSC response only. Since the only relevant information is the register data, it displays F1 (the content of register 0x01). 12 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 8. Touch Data Tab (Direct Mode) ______________________________________________________________________________________ 13 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 9. Touch Data Tab (Autonomous Mode) 14 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 10. Raw Data Tab ______________________________________________________________________________________ 15 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 11. Multi-Touch Tab (Before Zoom Out and Rotate) 16 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 12. Multi-Touch Tab (Single-Touch Active) ______________________________________________________________________________________ 17 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 13. Multi-Touch Tab (After Zoom Out and Rotate During the Multi-Touch Mode) 18 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 14. Reg. Data Snd/Rcv Tab ______________________________________________________________________________________ 19 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 15. MAX11811 EV Kit Schematic 20 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 16a. MAX11811 Interface Board Schematic (Sheet 1 of 2) ______________________________________________________________________________________ 21 MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Figure 16b. MAX11811 Interface Board Schematic (Sheet 2 of 2) 22 _____________________________________________________________________________________ MAX11811 Touch Evaluation System (TEVS) Evaluates: MAX11811 Revision History REVISION NUMBER 0 REVISION DATE 9/10 Initial release DESCRIPTION PAGES CHANGED — 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. 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