TSC2301EVM

TSC2301EVM Touch Screen Controller Evaluation Module User’s Guide November 2002 Data Acquisition Products SLAU098 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2002, Texas Instruments Incorporated EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may not meet the technical requirements of the directive. Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM User’s Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact the TI application engineer. Persons handling the product must have electronics training and observe good laboratory practice standards. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2002, Texas Instruments Incorporated EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 6 VDC to 12 VDC and output voltage of 3 VDC described in the EVM User’s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 40°C. The EVM is designed to operate properly with certain components above 40°C as long as the input and output ranges are maintained. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified using the EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2002, Texas Instruments Incorporated How to Use This Manual Preface Read This First About This Manual This users guide describes the function and operation of the TSC2301 touch screen controller evaluation module. This manual will help you quickly set up the evaluation board and its accompanying software, so that you may rapidly test and evaluate the TSC2301. A complete circuit description, as well as schematic diagram and bill of materials are included. How to Use This Manual This manual begins with an introductory chapter that describes the EVM and what it can do. If you are anxious to set things up and start testing, we suggest you read at least the first two chapters. These two chapters introduce you to the board, and how to set it up. Later chapters go into more detail on the board’s design and how to access its many features. Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentially damage your software or equipment. This is an example of a warning statement. A warning statement describes a situation that could potentially cause harm to you. iii Related Documentation From Texas Instruments The information in a caution or a warning is provided for your protection. Please read each caution and warning carefully. Related Documentation From Texas Instruments To obtain a copy of any of the following TI documents, call the Texas Instruments literature response center at (800) 477-8924 or the product information center (PIC) at (972) 644-5580. When ordering, please identify this booklet by its title and literature number. Updated documents can also be obtained through the TI website at www.ti.com. Data Sheets: Literature Number: TSC2301 TPA6203A SBAS191 SLOS364A TAS1020B SLES025A REG1117 SBVS001 If You Need Assistance If you have questions about this or other Texas Instruments data converter evaluation modules, feel free to e-mail the data converter application team at dataconvapps@list.ti.com. Include the product name in the subject heading. FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. Trademarks Windows is a trademark of Microsoft Corporation. TouchTek 4 and MicroTouch are trademarks of 3M. iv Contents Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 EVM Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Analog Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Computer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-2 1-2 1-3 1-3 1-3 2 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Unpacking the EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2-2 2-2 2-2 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.1 SPI POL Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.2 LINE IN Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.3 MIC BIAS Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.4 Power Supply Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.5 EEPROM A1 Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2 I/O Connector and Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2.1 GPIO Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2.2 Mono Out Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2.3 Audio Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2.4 USB Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3.2.5 External Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3.2.6 Audio Data (I2S) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3.2.7 External SPI Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3.2.8 Touch Screen Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3.2.9 Analog Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.3 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.3.1 USB Interface and Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.3.2 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3.3.3 Touch Screen and Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3.3.4 Keyboard Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 3.3.5 LCD BIas D/A Converter Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 3.3.6 Audio Interface Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 3.4 Program Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3.4.1 Human Interface Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3.4.2 Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 v Contents 3.4.3 3.4.4 3.4.5 4 Data Acquisition Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Audio Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Bass Boost Filter Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 4-3 4-5 Figures 1-1 2-1 3-1 3-2 3-3 3-4 3-5 3-6 3-7 TSC2301 Evaluation Kit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Default Software Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Human Interface Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 External Reference Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Data Acquisition Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Audio Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Microphone Input Selected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 Bass Boost Filter Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 Tables 2-1 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 vi Default Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jumper/Function Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GPIO Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mono Out Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Audio Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Audio Data Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External SPI Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Touch Screen Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Analog Input Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 3-2 3-3 3-3 3-4 3-4 3-4 3-5 3-5 3-6 3-6 Chapter 1 Introduction The TSC2301 is an advanced touch screen controller, which communicates to a host processor through an SPI serial interface. In addition, a full stereo audio codec is included in the TSC2301, and audio data is communicated to the device over an I2S bus. The TSC2301EVM accesses both of these buses through the use of a USB microcontroller, which provides a way to generate data for both buses from a PC running Windows 98SE, 2000, or XP. Topic Page 1.1 Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 EVM Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.3 Analog Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.4 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.5 Computer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Introduction 1-1 Device Characteristics 1.1 Device Characteristics The TSC2301 is a complete PDA analog interface circuit. It contains a complete 12-bit A/D resistive touch screen converter, including drivers, the control to measure touch pressure, a 4-by-4 matrix keyboard controller, and 8-bit D/A converter output for LCD contrast control. The TSC2301 interfaces to the host controller through a standard SPI serial interface. The TSC2301 offers two battery measurement inputs capable of reading battery voltages up to 6 volts, while operating with only a 2.7-V supply. It also has an on-chip temperature sensor capable of reading 0.3°C resolution. In addition to these features, the TSC2301 has full stereo audio playback and record capabilities. Access to the DAC and ADC sections of the TSC2301 is through an I2S interface. 1.2 EVM Block Diagram A block diagram of the TSC2301 evaluation kit is shown in Figure 1-1. J6 J1 1 2 J5 J10 1 2 KEY J4 MIC IN GPIO 13 14 GPIO AUDIO 8 6 TSC2301 J11 1 2 SPI ANALOG 9 10 I2S AUDIO TAS1020 4 J3 LINE IN I2S 5 4 LINE OUT KEYPAD HEADPHONE OUT Figure 1-1. TSC2301 Evaluation Kit Block Diagram 4 J12 YX+ Y+ VREG 3.3 V X- 9 10 EXT SPI J14 IN2 USB IN1 VB2 J8 6-12 VDC VB1 The digital control interface is through either the USB bus or an external SPI bus. The onboard microprocessor can be disabled, allowing the external SPI bus to control the TSC2301. Power supplies are derived from the USB bus, or may be provided to the kit through external connectors from an external, user-supplied laboratory power supply. 1-2 Analog Inputs/Outputs 1.3 Analog Inputs/Outputs Touch screen inputs are provided to the controller through J13. This connector is standard on 3M Touch Systems (formerly MicroTouch) TouchTek 4 touch screens. Alternate touch screen input connections are provided on the J12 terminal block. The other analog inputs are brought onto the board through the J14 terminal block. The AUX1 and AUX2 inputs must be between 0 V and 3.3 V, while the battery inputs, VBAT1 and VBAT2 may range from 0 V to 6 V. 1.4 Power Requirements The TSC2301EVM may be powered from either the USB port or an external 6-VDC to 12-VDC power supply. 1.5 Computer Requirements The TSC2301EVM software is designed to run on a PC running Windows platforms that support USB (Windows 98SE, 2000, XP, etc). Minimum Requirements: - IBM-compatible Pentium PC or higher - Windows 98SE/2000/XP - 64MB RAM minimum - 20MB available hard disk space - CD-ROM drive - USB Port Introduction 1-3 THIS PAGE INTENTIONALLY LEFT BLANK 1-4 Chapter 2 Getting Started This chapter guides you through unpacking your EVM, and setting it up so you can begin working with it immediately. Topic Page 2.1 Unpacking the EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.3 Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Getting Started 2-1 Unpacking the EVM 2.1 Unpacking the EVM Unpacking the TSC2301EVM, check to make sure you received all the material that should be in the box. The EVM kit should include the following: - TSC2301EVM board, PWB 6438187 - CD-ROM, 6438190 If any of these components is missing, contact Texas Instruments for a replacement. 2.2 Default Configuration The TSC2301EVM features a few simple means of configuring its operation. The default settings for these items are shown in Table 2-1. When you unpack your TSC2301EVM, make sure that your board is initially configured as shown here. Table 2-1. Default Configuration Settings Board Identifier Description Default Setting JMP1 SPI clock polarity select 2 to 3 JMP2 LINE IN left attenuator Installed JMP3 LINE IN right attenuator Installed JMP4 MIC BIAS select 2 to 3 JMP5 PWR select 1 to 2 JMP6 A1 select for EEPROM Installed 2.3 Quick Start Once the TSC2301EVM has been unpacked and you have verified that the board is configured as shown in Table 2-1, install the software. Place the CD-ROM into your PC’s CD-ROM drive. Locate the Setup program on the disk, and run it. The Setup program installs the TSC2301EVM software on your PC. Note that if you are running Windows 2000 or XP, you need administrator privileges to install the software. Follow the instructions that the installer gives you. When the installation is complete, connect a USB cable from your PC to the TSC2301EVM. You may see a message that a Human Interface Device has been connected. Once this connection has been made, launch the TSC2301EVM software on your PC. The software should automatically find the TSC2301EVM. If the board is found, the screen shown in Figure 2-1 appears. 2-2 Quick Start Figure 2-1. Default Software Screen In order to use the touch screen features, a 4-wire resistive touch screen must be connected to J12 or J13 of the TSC2301EVM. Getting Started 2-3 THIS PAGE INTENTIONALLY LEFT BLANK 2-4 Chapter 3 Operation This chapter describes each function of the TSC2301 evaluation kit and how to use the accompanying software to control and use the TSC2301. Topic Page 3.1 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 I/O Connectors and Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.3 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.4 Program Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Operation 3-1 Jumpers 3.1 Jumpers The following table shows the function of each jumper on the EVM: Table 3-1. Jumper/Function Reference Reference Designator Setting Function 1 to 2 SPI POL select pin = 0 V 2 to 3 SPI POL select pin = 3.3 V JMP2 1 to 2 JMP3 JMP1 JMP4 JMP5 JMP6 3.1.1 Factory Default Subsection 2 to 3 3.1.1 LINE IN left attenuator Installed 3.1.2 1 to 2 LINE IN right attenuator Installed 3.1.2 1 to 2 MIC BIAS from fixed resistor 2 to 3 MIC BIAS from TSC2301 2 to 3 3.1.3 1 to 2 PWR select: USB powered 2 to 3 PWR select: External power supply 1 to 2 3.1.4 1 to 2 A1 select for EEPROM Installed 3.1.5 SPI POL Select The TSC2301 allows for SCLK polarity selection for the SPI bus. Pulling the POL pin of the TSC2301 to either VCC or to ground makes this selection. With POL pulled to VCC, the part operates as shown in the Timing Diagram on Page 8 of the TSC2301 data sheet. (SCLK is low when idle, first edge is a rising edge; data is clocked in on falling edges.) With POL pulled to GND, the polarity of SCLK in this diagram is reversed. (SCLK is high when idle; first edge is a falling edge; data is clocked in on rising edges.) 3.1.2 LINE IN Attenuator The TSC2301EVM provides attenuators on each of the LINE IN signal inputs. These may be bypassed by installing JMP2 or JMP3 for left and right channel attenuators, respectively. 3.1.3 MIC BIAS Selection JMP4 selects for microphone bias to come from the TSC2301 itself, or from an external resistor, R15, which is not installed on the TSC2301EVM board. If an external bias is needed, the appropriate size resistor may be soldered in to the R15 location on the board and JMP4 set to connect between positions 1 and 2. If no mic bias is required, either leave JMP4 connected between positions 2 and 3 and turn off the TSC2301’s mic bias under software control, or do not install the jumper top for JMP4 in any position. 3.1.4 Power Supply Selection The TSC2301EVM may be powered from the USB port directly, or an external power supply may be provided through J8. JMP5 selects between these two power sources. 3-2 I/O Connector and Signals 3.1.5 EEPROM A1 Select The TSC2301EVM loads its firmware from an onboard EEPROM. In order to use the firmware in this EEPROM, its A1 address line must be pulled low, so JMP6 should stay installed for normal use. This jumper may be removed when firmware updates are to be made. 3.2 I/O Connector and Signals The various connectors on the TSC2301EVM are described in this section. 3.2.1 GPIO Connector This 12-pin header provides access to the six GPIO pins on the TSC2301. Table 3-2. GPIO Connector Reference Designator J1 3.2.2 Description GPIO Header Pin Number Signal Name 1 GPIO0 3 GPIO1 5 GPIO2 7 GPIO3 9 GPIO4 11 GPIO5 2,4,6,8,10,12 Ground Mono Out Connector The TSC2301 has a monaural output, which can be driven either from the analog bypass input or a mono mix of the stereo outputs, selectable under software control. This signal is routed to a mono power driver on the TSC2301EVM, and an 8-Ω or greater speaker may be connected to this driver through J2. Table 3-3. Mono Out Connector 3.2.3 Reference Designator Description Pin Number Signal Name Output from mono power driver to speaker 1 MONO- J2 2 MONO + Audio Connectors The TSC2301 audio inputs and outputs are routed through these stereo (TIP/RING/SLEEVE) 3.5 mm jacks. Note the polarity of channel assignments for these connectors. Operation 3-3 I/O Connector and Signals Table 3-4. Audio Connectors Reference Designator Name Description J3 Line In Stereo line level audio inputs J4 J5 J6 3.2.4 Mic In - tip = right channel - ring = left channel - sleeve = ground Microphone input Line Out Headphone Out - tip = mic bias voltage - ring = mic input - sleeve = ground Stereo line level audio outputs - tip = left channel - ring = right channel - sleeve = ground Stereo headphone output - tip = right channel - ring = left channel - sleeve = ground USB Connector Connection to a USB cable from a PC is made through J7, a standard USB type B receptacle. Table 3-5. USB Interface Connector Reference Designator J7 3.2.5 Description USB slave connection to PC Pin Number Signal Name Function 1 VCC + 5-V supply from USB 2 D- – Differential USB signal 3 D+ + Differential USB signal 4 GND Ground External Power Connectors While it is most convenient to power the TSC2301EVM from the USB bus, external power supplies may be used. Two connectors detailed in Table 3-6 are provided for the user. Table 3-6. External Power Connectors 3-4 Reference Designator Description Pin Number Signal Name J8 External power terminal block 1 6 VDC–12 VDC input 2 Ground J9 External power jack - 6 VDC–12 VDC input, positive center terminal I/O Connector and Signals 3.2.6 Audio Data (I2S) Connector The I2S bus, which carries audio data to and from the TSC2301, is brought out to header J10. Table 3-7. Audio Data Connector Reference Designator Audio Data (I2S) connector J10 3.2.7 Description Pin Number Signal Name 1 MCLK 3 BCLK 5 LRCLK 7 I2SDIN 9 I2SDOUT 2,4,6,8,10 Ground External SPI Connector The TSC2301 SPI port is brought out to the J11 header. It may be driven by an external source if the onboard microprocessor is disabled by powering up with the A1 select jumper (JMP6) removed. Table 3-8. External SPI Connector Reference Designator J11 3.2.8 Description External SPI Bus Pin Number Signal Name Function 1 NC Not connected 3 SS Slave select for SPI bus. 5 SCLK Serial clock for SPI bus. 7 MOSI Master out, slave in data line for SPI bus. Data travels to the TSC2301 over this line. 9 MISO Master in, slave out data line for SPI bus. Data travels from the TSC2301 over this line. 2, 4, 6, 8, 10 GND Ground Touch Screen Connectors A 4-wire touch screen connects to the motherboard through connector J13. This connector is standard on 3M Touch Systems (formerly MicroTouch) TouchTek 4 touch screens. A standard terminal block connection is available on J12 for those users who have touch screen connectors that do not match the J13 configuration. Operation 3-5 Circuit Description Table 3-9. Touch Screen Input Reference Designator J12, J13 3.2.9 Description Touch screen input Pin Number Signal Name Function 1 X- Touch screen X- electrode 2 Y+ Touch screen Y+ electrode 3 X+ Touch screen X+ electrode 4 Y- Touch screen Y- electrode Analog Input Connector The auxiliary and battery inputs to the touch screen controller are brought onto the motherboard through a terminal block, J14. The pinout is shown in Table 3-10. Table 3-10.Analog Input Connector Reference Designator J14 Description Battery and auxiliary inputs to the touch screen control Pin Number Signal Name Function 1 VBAT1 Battery input 1, 0 V to 6 V 2 VBAT2 Battery input 2, 0 V to 6 V 3 AUX1 Auxiliary input 1, 0 V to VREF 4 AUX2 Auxiliary input 2, 0 V to VREF 3.3 Circuit Description The TSC2301 evaluation kit circuitry consists of a USB interface and microprocessor, power supply circuitry, touch screen and analog input interfaces, a keypad interface, an LCD bias D/A converter circuit, and audio interface circuitry (both analog and digital). These circuits are described in the following sections. 3.3.1 USB Interface and Microprocessor The TSC2301EVM has a USB interface for connecting to a PC. This connection is made through a TAS1020B streaming audio processor, U4. The SPI interface to the TSC2301 can be controlled from two sources: the external SPI header, J11, or through the onboard microprocessor (U4) via USB. U4’s outputs are enabled only when the supplied firmware is loaded. The firmware resides in serial EEPROM chip U3. U4 only loads firmware from U3 when U3’s A1 address line is pulled low. To disable firmware loading, A1 must be high, by having JMP6 removed. When the firmware is loaded and active, D2 (a yellow LED) lights. If no firmware is loaded, U4’s outputs are in 3-state, allowing the external SPI bus to drive the TSC2301. When the firmware is loaded, the PC software enables the microprocessor to control the SPI bus. 3-6 Circuit Description Do not drive the external SPI bus when the firmware is loaded and the onboard microprocessor is active. Disable the microprocessor by removing JMP6 and cycling power to the TSC2301EVM if you want to use the external SPI bus. Each signal from the SPI inputs is connected directly to the TSC2301. As such, signals on these pins must not exceed the power supply voltage of the TSC2301, which is 3.3 V on this EVM. Likewise, the I2S signals for the digital audio can be driven either externally by J10 or by the USB audio controller. Do not drive the external I2S bus when the firmware is loaded and the onboard microprocessor is active. Disable the microprocessor by removing JMP6 and cycling power to the TSC2301EVM if you want to use the external I2S bus. 3.3.2 Power Supply Power to the TSC2301EVM can be derived directly from the USB interface, or externally supplied through the J8 terminal block or the J9 barrel jack connector. 6 VDC to 12 VDC must be supplied from an external supply. Since it is regulated on the TSC2301EVM, this input voltage does not need to be regulated, as long as it falls within this range. D1 prevents damage to the board in the event a power supply is connected in reverse polarity. U5 regulates the input supply voltage to provide 3.3 V. The regulated supply voltage has an LED attached that alerts the user that the supply is working. 3.3.3 Touch Screen and Analog Inputs Terminal block J14 provides input connection points for the battery and auxiliary inputs. Battery inputs may range from 0 V to 6 V, and the auxiliary inputs can range from 0 V to 2.5 V. The touch screen can be connected to J13, or to the J12 terminal block. Each of these eight inputs has provision for an RC filter to be placed in line with the signal. As shipped, all the resistors are 0 Ω, and the capacitors are not installed. If noisy conditions prevent obtaining good readings from the TSC2301, 0.1-µF capacitors may be installed in positions C39 through C46. If more filtering is required, the 0-Ω resistors should be unsoldered from the board and replaced with small resistors. Note that increasing the capacitance on the touch screen inputs requires increased panel voltage stabilization time and increased precharge and sense times, thus lowering the available number of readings per second. Operation 3-7 Circuit Description 3.3.4 Keyboard Interface A 4x4 matrix keypad is included with the TSC2301EVM. This keypad connects directly to the TSC2301. No other circuitry is needed since the TSC2301 contains all the keypad control circuitry. 3.3.5 LCD BIas D/A Converter Circuit The TSC2301 contains a current-output D/A converter, which is designed to be used with a two resistor pullup network to turn the current into a voltage. The details of the operation of this D/A converter can be found in the TSC2301 data sheet. On this board, provision is made for the user to provide two resistors, in R2 and R3 sockets. R1 is the range setting resistor for the TSC2301 DAC, and is installed in a socket so that it can be replaced with a different value. With the factory installed value of 100 KΩ, the DAC has a range of 600 µA. 3.3.6 Audio Interface Circuitry J3 is a stereo 3.5-mm jack for connecting line-level inputs to the TSC2301. Each channel is presented to an attenuator (for example R11, R13) and a small capacitor to provide some antialiasing ( for example C17), then AC-coupled into the TSC2301 (for example, through C12). The attenuator may be defeated by JMP2, or JMP3. Line outputs from the TSC2301 are routed to J5 through a similar network and are AC-coupled. The mono output from the TSC2301 is sent to U2, whose output is then connected to J2. An 8-Ω or greater speaker can be connected between the two terminals. A mono electret microphone may be connected to J4. This jack provides both audio and bias connections. Bias for the microphone can be supplied either from the TSC2301’s mic bias circuitry, or from an external resistor, R15. R15 is not installed on the TSC2301EVM, but can be installed by the user. Internal or external bias is selected by JMP4. The TSC2301 has a built-in headphone amplifier. J6 is a jack for connection to headphones, with AC-coupling provided on the EVM. 3-8 Program Description 3.4 Program Description After installing the software for the TSC2301EVM as described in Section 2.3, you may begin using it to evaluate and develop with the TSC2301. 3.4.1 Human Interface Screen The program’s interface is a simple, five-tab interface. Clicking on a tab takes you to the functions associated with that tab. The program begins on the Human Interface tab , the default as shown in Figure 3-1. Figure 3-1. Human Interface Screen This screen reflects the touch screen and keypad inputs from the TSC2301EVM. The status bar on the bottom of the screen is divided into four sections, and shows the status of communication between the PC and the EVM. Starting from the left, the first section shows the status of the connection; if an error in communication occurs, an error message appears here, otherwise it looks as shown in Figure 3-1. The final section, on the right side of the status bar, shows the number of readings per second being taken from the touch screen. This value drops to zero when no screen touch is detected. Operation 3-9 Program Description 3.4.1.1 Touch Screen Section The touch screen box on this screen is updated when a touch is detected on the touch screen. As the touch screen is drawn upon, the motion on the touch screen is translated into pixels on the screen. The software takes X, Y, and Z readings, which are shown at the top of this box. As the touch pressure is increased, the pixel size increases; a lighter touch results in smaller pixel sizes. The display can be cleared by pressing the Enter or Delete keys on the PC keyboard. 3.4.1.2 Keypad Section The keypad functions of the TSC2301 are controlled from this section of the screen. As keys on the keypad of the EVM are pressed, the keypresses are displayed in the display near the top of this box. The keymap shown here also reflects keypresses on the EVM. The display can be cleared by pressing the Clear button in this box. Individual keys can be masked by clicking on the key in the keymap on this screen. The key label changes to an X to reflect that the key is masked. When a key is masked, pressing that key on the keypad on the EVM does not result in the keypress being detected. To unmask a key which was masked, simply click on the key in the keymap again, and the key label returns to its corresponding value. The debounce time for the keypad can be set using the slider in this section. The debounce time can range from 2 ms to 120 ms. Note that using short debounce times results in a single keypress generating multiple keypress events. When the Keyclick Enabled checkbox is checked, the three slider controls shown in Figure 3-1 become visible. With Keyclick Enabled, the TSC2301 is commanded to generate a keyclick sound whenever a keypress is detected. The volume, duration, and frequency of this keyclick may be adjusted using the three slider controls shown here. 3.4.2 Configuration Screen This screen gives access to all the configurable settings for the TSC2301’s A/D converter, reference and D/A converter, as shown in Figure 3-2. 3-10 Program Description Figure 3-2. Configuration Screen 3.4.2.1 ADC Control Section This section controls all the parameters of the A/D converter. Each slider controls one parameter, whose value is shown next to the slider. Each slider is described below. - Resolution Selects between 8-, 10-, and 12-bit resolution. - Conversion Clock The internal clock which runs the A/D converter can run at 8, 4, 2, or 1 MHz. When running at 8 MHz, only 8-bit resolution is possible; when running at 4 MHz, 8- or 10-bit resolution is possible, but 12-bit is not. These restrictions are reflected in the operation of this program, since only 1 or 2 MHz clock rates allow 12-bit resolution to be chosen. - Panel Voltage Stabilization Time This is the time that the TSC2301 allows for the touch screen to settle after turning the drivers on. - Precharge Time - Sense Time These two parameters are the time allowed to precharge the touch panel capacitance and then sense to see if the screen is touched. For more details on these parameters, refer to the TSC2301 data sheet. Operation 3-11 Program Description - Averaging Several readings may be taken and then averaged to give a single result. No averaging can be chosen, or 4, 8, or 16 readings can be averaged. Note that these settings apply to all operations of the A/D converter, not just the touch screen operations. Thus, resolution and averaging can be changed to increase accuracy in the data acquisition functions. 3.4.2.2 Reference Section The touch screen function is always performed using a ratiometric mode; for all other A/D functions, a reference voltage is needed for the A/D converter. Figure 3-2 shows this section with the TSC2301’s internal reference chosen. This reference voltage can be set to either 1.2 V or 2.5 V. The internal reference powers down between conversions, to save power. Using the Powered at all times checkbox, this can be overidden and the reference does not power down. If the reference is allowed to power down, the TSC2301 then must allow a delay time for the reference to power up when a conversion is to take place. This delay time can be set using the slider in this section. If an external reference is to be used, it may be selected as shown in Figure 3-3. The value of the external reference should be entered in the text box shown. Figure 3-3. External Reference Selection 3.4.2.3 DAC Section The D/A converter can be powered down by using the checkbox in this section, if it is not going to be used. If this box is not checked, the D/A converter value 3-12 Program Description is set by using the slider in this section. Note that sliders, when selected, can change value by either moving the mouse or using the arrow keys on the PC keyboard. Note that the DAC output voltage is dependent upon the resistor network and pullup voltage used on the hardware. Refer to the TSC2301 data sheet for more information on the DAC operation. 3.4.3 Data Acquisition Screen The data acquisition functions of the TSC2301 can be accessed on this screen, shown in Figure 3-4. Figure 3-4. Data Acquisition Screen When on this screen, the TSC2301 is commanded to perform a PORT SCAN function, which updates the battery and auxiliary input voltage readings, and then is commanded to perform a TEMP1 and TEMP2 measurement. These measurements are all repeated once every second, and the results are displayed on this screen. The general-purpose I/O (GPIO) pins of the TSC2301 can be accessed from this screen as well. Each GPIO pin can either be an input or an output; in Figure 3-4, GPIO 0 is selected to be an output. When a GPIO is selected as an output, the Assert checkbox corresponding to that GPIO is enabled. Checking this box sets the output HIGH; an unchecked Assert box sets the output low. If the GPIO is not an output, the corresponding Assert checkbox is disabled. The state of each GPIO pin is reflected in the State column on this screen. 3.4.4 Audio Screen The audio functions of the TSC2301 can be accessed using this screen, which is shown in Figure 3-5. In this EVM, all audio is sampled at 44.1 kHz in 20-bit mode. The TSC2301 has more flexibility, but this EVM has these values fixed. Operation 3-13 Program Description Figure 3-5. Audio Screen 3.4.4.1 ADC Section Checking the Power Up This Section checkbox can enable the audio ADC. This enables the other controls in this section of the screen. Checking the Stereo Volume box ties the left and right channels of the volume control together, so they can be moved as one. When in stereo volume mode, checking either channel’s Mute checkbox mutes both channels. If stereo mode is not selected, then left and right channel volumes can be adjusted independently, and muting is done for each channel with the corresponding Mute checkbox. The input to the ADC can come from either the line inputs or a microphone input. Figure 3-5 shows the line input selected. The audio ADC also has a highpass filter which is a submultiple of the sampling rate, to remove dc or low frequency components from the signal.If the microphone input is selected, additional options are presented, as shown in Figure 3-6. 3-14 Program Description Figure 3-6. Microphone Input Selected The microphone gain may be set to 0 dB, 6 dB, or 12 dB. A microphone bias voltage can also be generated by the TSC2301; checking the Mic Bias On checkbox enables this feature. Note that to use this feature, JMP4 must be set to positions 2-3. 3.4.4.2 DAC Section Like the ADC section, the TSC2301 audio DAC can be powered on or off. Volume controls work the same as in the ADC section. Two digital filters are provided by the TSC2301 for the audio DAC. Checking the Deemphasis On checkbox enables a deemphasis filter. Checking the Filter On checkbox enables what the TSC2301 datasheet describes as the Bass Boost Filter—however, this filter is user programmable and so may be used for more than just bass boosting. See the Bass Boost Filter section for more details. A label below this checkbox informs you which filter function is currently loaded into the TSC2301. 3.4.4.3 Bypass Section The TSC2301’s analog bypass circuitry is controlled in this part of the screen, in a similar fashion as done for the ADC and DAC. Note that the audio output of the TSC2301 includes a mix of the DAC and the bypass channels, in proportion to their respective volume settings. 3.4.4.4 Output Section The headphone amplifier of the TSC2301 can be powered on or off using the Headphone Amp Enable checkbox. The VCM of the TSC2301 (see the data sheet for details of this function) can also be turned on or off in this section. Operation 3-15 Program Description The TSC2301’s mono output can take as its source either the left channel ADC input signal, or a mono mix of the TSC2301 audio output. The source is selectable when the mono output is enabled. 3.4.5 Bass Boost Filter Screen The Bass Boost Filter screen displays all of the coefficients for the bass boost filter function of the TSC2301. Since these are programmable, other functions may be programmed, not just bass boost. This screen is shown in Figure 3-7. Figure 3-7. Bass Boost Filter Screen Different filter coefficients can be loaded for left and right channels, though usually these are set the same. Three preconfigured filters are selectable using the drop-down list box at the bottom of this screen. Selecting one of these updates the coefficients and causes the graph of the filter response to update. However, nothing is loaded into the TSC2301 until the Download button is pressed. If changes are made to coefficient values directly, the response can be viewed on the graph by pressing the View Response button. It is recommended that you view the response before downloading values to the TSC2301, as some values can cause clipping or oscillation of the filter. The filter equation is described in the TSC2301 data sheet. 3-16 Chapter 4 Physical Description This chapter contains the component locations, bill of materials, and the schematics. Topic Page 4.1 Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 4.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 4.3 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Physical Description 4-1 Component Locations 4.1 Component Locations 4-2 Bill of Materials 4.2 Bill of Materials Reference Designators Manufacturer Mfr Part number Description 2 C34, C35 Panasonic or alternate ECJ-1VC1H330J CAP 33 pF 50 V 5% ceramic chip 603 2 C28, C29 Panasonic or alternate ECJ-1VC1H470J CAP 47 pF 50 V 5% ceramic chip 603 1 C32 Panasonic or alternate ECJ-1VC1H101J CAP 100 pF 50 V 5% ceramic chip 603 4 C17, C18, C22, C23 Panasonic or alternate ECJ-1VC1H221J CAP 220 pF 50 V 5% ceramic chip 603 5 C5, C9, C14, C15, C33 Panasonic or alternate ECJ-1VB1H102K CAP 1000 pF 50 V 10% ceramic chip 603 2 C3, C31 Panasonic or alternate ECJ-1VB1C104K CAP 0.1 µF 16 V 10% ceramic chip 603 8 C39, C40, C41, C42, C43, C44, C45, C46 Panasonic or alternate ECJ-1VB1C104K CAP 0.1 µF 16 V 10% ceramic chip 603 3 C10, C11, C16 Panasonic or alternate ECJ-1VB1A224K CAP 0.22 µF 10 V 10% ceramic chip 603 1 C37 Panasonic or alternate ECJ-2VF1C334Z CAP 0.33 µF 16 V 20% ceramic chip 805 8 C8, C12, C13, C19, C24, C25, C30, C36 Panasonic or alternate ECJ-2YB1A105K CAP 1 µF 10 V 10% ceramic chip 805 8 C1, C2, C4, C6, C7, C20, C21, C38 Panasonic or alternate ECJ-3YB0J106K CAP 10 µF 6.3 V 10% ceramic chip 1206 2 C26, C27 Panasonic EEV-FK1A221P CAP 220 µF 10V 20% Electrolytic SMT 1 D1 Micro Commerical Corp. DL4001 Diode 1 A 50 V SMD MELF 1 D2 Lumex SML-LX1206YC-TR LED yellow clear 1206 SMD 1 D3 Lumex SML-LX1206GC-TR LED green clear 1206 SMD 2 J2, J8 On Shore Technology ED555/2DS 2 Contact screw terminal block 2 J12, J14 On Shore Technology ED555/4DS 4 Contact screw terminal block 1 J13 Tyco Electronics/AMP 103634-3 4 Pin right angle latching header 1 J7 Mill-Max 897-30-004-90-000000 USB Type B receptacle, single, thru-hole 1 J9 CUI Stack PJ-102B 2.5 mm Power connector 4 J3, J4, J5, J6 CUI Stack SJ-3515-SMT-1 3.5 mm Stereo audio jack SMT 2 J10, J11 Samtec TSW-105-07-L-D 10 Pin double row header (2x5) 1 J1 Samtec TSW-106-07-L-D 12 Pin double row header (2x6) 3 JMP2, JMP3, JMP6 Samtec TSW-102-07-L-S 2 Pin single row header (2x1) 3 JMP1, JMP4, JMP5 Samtec TSW-103-07-L-S 3 Pin single row header (3x1) 1 KPD1 Grayhill 88BB2-072 4x4 Keypad 8 R34, R35, R36, R37, R38, R39, R40, R41 Panasonic or alternate ERJ-6GEYJR00V RES 0 Ω 1/8 W 5% 0805 SMD 2 R5, R6 Panasonic or alternate ERJ-6GEYJ100V RES 10 Ω 1/8W 5% 0805 SMD 2 R24, R25 Panasonic or alternate ERJ-6ENF27R4V RES 27.4 Ω 1/10W 1% 0805 SMD 2 R18, R20 Panasonic or alternate ERJ-6GEYJ101V RES 100 Ω 1/8W 5% 0805 SMD 1 R33 Panasonic or alternate ERJ-6GEYJ221V RES 220 Ω 1/8W 5% 0805 SMD 1 R32 Panasonic or alternate ERJ-6ENF6490V RES 649 Ω 1/10W 1% 0805 SMD 1 R16 Panasonic or alternate ERJ-6GEYJ681V RES 680 Ω 1/8W 5% 0805 SMD 1 R26 Panasonic or alternate ERJ-6GEYJ152V RES 1.5K Ω 1/8W 5% 0805 SMD Qty Physical Description 4-3 Bill of Materials Qty Reference Designators Manufacturer Mfr Part number Description 4 R27, R28, R29, R42 Panasonic or alternate ERJ-6ENF3091V RES 3.09 kΩ 1/10W 1% 0805 SMD 4 R11, R12, R13, R14 Panasonic or alternate ERJ-6GEYJ512V RES 5.1 kΩ 1/8W 5% 0805 SMD 5 R4, R7, R8, R9, R10 Panasonic or alternate ERJ-6GEYJ103V RES 10 kΩ 1/8W 5% 0805 SMD 1 R17 Panasonic or alternate ERJ-6GEYJ473V RES 47 kΩ 1/8W 5% 0805 SMD 5 R19, R21, R22, R23, R30 Panasonic or alternate ERJ-6GEYJ104V RES 100 kΩ 1/8W 5% 0805 SMD 1 R1 Yageo or alternate MFR-25FBF-100K RES 100 kΩ 1/4W 1% Axial 1 R31 Panasonic or alternate ERJ-6GEYJ105V RES 1 MΩ 1/8W 5% 0805 SMD 1 R15 2 R2, R3 6 R1, R2, R3 AMP Incorporated 50863-5 Miniature spring socket 10 TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 Keystone Electronics 5000 Test point miniature thru-hole 1 TP1 Keystone Electronics 5011 Test point multipurpose thru-hole 1 U1 Texas Instruments TSC2301 PDA analog interface circuit 1 U2 Texas Instruments TPA6203A1GQV 1.25 W Mono fully differential amplifier 1 U3 MicroChip 24LC64I/SN 64K I2C CMOS serial EEPROM 1 U4 Texas Instruments TAS1020APFB Stereo USB audio interface 1 U5 Texas Instruments REG1117-3.3 3.3 V, 0.8 A, Low dropout voltage regulator SMD 1 X1 Epson MA-505 6.000M-C0 6 MHz Crystal, SMD 6 N/A Samtec or alternate SNT-100-BK-TH Shorting jumper 8 E, F, G, H, J, K, L, M AMP Incorporated 50864-5 Miniature spring socket 4 N/A Keystone Electronics or alternate 1808 0.25” x 0.625” Hex 4-40 threaded standoff 4 N/A Building Fasteners or alternate PMS 440 0050 PH Pan head machine screws 4-40 x 1/2” Phillips 4 N/A Building Fasteners or alternate MPMS 002 0008 PH Pan head machine screws No 2 x 8 mm Phillips 4 N/A Building Fasteners or alternate MLWZ 002 No 2 metric lock washer 4 N/A Building Fasteners or alternate MHNZ 002 No 2 metric nut 0 PWB Texas Instruments 6438187 Printed wiring board 0 PCA Texas Instruments 6438189 Printed circuit assembly 4-4 RES 1/8W 5% 0805 RES 1/4W 1% Axial Schematics 4.3 Schematics Schematic diagrams of the TSC2301EVM showing the TSC2301 connections and the USB and connectors are shown on the following pages. Physical Description 4-5 1 2 3 4 5 6 Revision History REV ECN Number Approved I2SDOUT I2SDIN JMP2 2 1 LRCLK C12 BCLK R13 5.1K 1uF MCLK D C17 220pF +3.3V R11 5.1K J3 D JMP3 X+ R14 29 15 62 54 VDDHP AVDD 23 24 25 26 27 MCLK BCLK LRCLK I2SDIN I2SDOUT 22 COO COI R12 5.1K C21 TP4 MIC BIAS R6 10uF JMP4 MIC BIAS SEL 10uF 47 48 40 41 42 43 44 45 46 49 50 51 52 55 56 57 J4 1 2 3 R16 680 MIC IN C20 10uF R17 47K TP3 C22 220pF C23 220pF C TP5 TP6 C24 1uF R18 100 R19 100K U1 TSC2301 C7 10uF C9 0.001uF C8 1uF LINE OUT C25 R20 100 1uF SCLK R21 100K SS MOSI KPD1 88BB2-072 4X4 KEYPAD DAV 3 B 4 5 6 7 POL 8 9 A B TP2 DAC OUT C D E F R2 1 2 3 MISO +3.3V R9 10K KBIRQ C10 +3.3V R7 .22uF C11 R3 RES_SKT +3.3V PENIRQ RES_SKT 10K R8 10K .22uF U2 C3 C2 +3.3V B1 C16 .22uF C3 .1uF C26 1uF 220uF B IN- VO+ VO- IN+ J2 B3 2 R22 100K J6 A1 1 C27 SHUTDOWN HEADPHONE OUT MONO OUT 220uF BYPASS R23 100K TPA6203A1GQV C4 C3 C2 C1 R4 R3 R2 R1 B2 5 6 7 8 10 11 12 13 E F G H J K L M R10 C1 10K R4 10K C19 A3 2 VDD 1 JMP1 GND 0 J5 C15 0.001uF C14 0.001uF G0 G1 G2 G3 G4 G5 R1 100K AGND R1 R2 R3 R4 C1 C2 C3 C4 10 0.001uF C6 53 32 33 34 35 36 37 38 39 R1 R2 R3 R4 C1 C2 C3 C4 GPIO_0 GPIO_1 GPIO_2 GPIO_3 GPIO_4 GPIO_5 IN2 DACSET DACOUT VREF+ VREFAUXIN_L AUXIN_R MIC_IN MICBIAS VCM AFILTR AFILTL MONO+ MONOVOUTR VOUTL HPL HPR GNDHP 8 9 10 11 12 13 4 5 DAV MISO PENIRQ KBIRQ RST IN1 VREF 20 19 6 30 31 3 SCLK SS MOSI POL VBAT2 VBAT1 VBAT2 AUX1 AUX2 17 16 18 7 VBAT1 C 21 28 14 1 2 63 64 X+ Y+ XY- DVDD DVDD 60 61 58 59 Y- DGND DGND X- C18 220pF C5 C2 10uF R15 NI 5.1K 1uF 10uF Y+ LINE IN +3.3V C13 +3.3V C1 2 1 C4 10uF R5 10 J1 2 4 6 8 10 12 TP1 A 1 3 5 7 9 11 G0 G1 G2 G3 G4 G5 ti DATA ACQUISITION PRODUCTS GPIO HEADER HIGH PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE ENGINEER RICK DOWNS DRAWN BYRICK DOWNS DOCUMENT CONTROL NO.6438188 SHEET 1 1 2 3 4 5 OF 2 SIZE B TSC2301EVM TOUCH SCREEN CONTROLLER REV A DATE 21-Nov-2002 FILE 6 A 1 2 3 4 5 6 REVISION HISTORY REV ENGINEERING CHANGE NUMBER APPROVED J12 1 2 D D J7 USB SLAVE CONN TP7 3 BCLK +3.3V SCL SDA 1 2 3 24LC64I/SN 1 3 5 7 9 C35 33pF C34 33pF R35 1 2 3 4 2 4 6 8 10 X- 0 J13 J10 WP VSS LRCLK 7 4 VCC A0 A1 A2 1 2 3 4 C30 1uF R34 I2SDOUT U3 8 TERMBLOCK-4 I2SDIN 6 +3.3V 4 MCLK R28 3.09K R27 3.09K 5 VCC DD+ GND TP8 Y+ 0 R36 X+ 0 TOUCH SCREEN R37 AUDIO DATA Y- 0 X1 100pF C33 R29 .001uF 3.09K C41 .1uF C42 .1uF 44 43 42 41 40 39 37 38 36 35 34 32 46 47 48 1 3 5 6 7 4 16 28 45 C29 47pF P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 DVDD DVDD DVDD AVDD XTALO XTALI PLLFILI PLLFILO MCLKI PUR DP DM DVSS DVSS DVSS AVSS +3.3V R30 100K MISO 1 R38 VBAT1 2 0 R39 VBAT2 3 0 R40 IN1 4 0 R41 IN2 MOSI SS SCLK +3.3V J11 1 3 5 7 9 2 4 6 8 10 VBAT1 VBAT2 IN1 IN2 0 EXTERNAL INPUTS EXTERNAL SPI 9 10 11 12 13 14 15 17 18 19 20 22 TAS1020APFB R31 1M C J14 31 30 29 27 26 25 24 23 8 21 33 2 C43 .1uF TP11 C28 47pF C32 R26 1.5K TP10 R25 27.4 MRESET TEST EXTEN RSTO P3.0 P3.1 P3.2/XINT P3.3 P3.4 P3.5 NC NC R24 27.4 C40 .1uF U4 JMP6 A1 SELECT C TP9 3.09K C39 .1uF 6.00MHz 2 1 SCL SDA VREN RESET MCLKO2 MCLKO1 CSCLK CDATO CDATI CSYNC CRESET CSCHNE R42 C44 .1uF C45 .1uF C46 .1uF DAV C36 1uF KBIRQ PENIRQ B B J8 1 +3.3V 2 D2 EXT PWR IN R32 SML-LX1206YC-TR YELLOW 1 2 3 C37 .33uF JMP5 PWR SELECT D1 J9 C31 .1uF VIN GND U5 REG1117-3.3 3 6VDC-12VDC IN VOUT +3.3V R33 2 220 D3 1 649 SML-LX1206GC-TR GREEN C38 10uF ti DL4001 CUI-STACK PJ102-B 2.5 MM A DATA ACQUISITION PRODUCTS HIGH PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE ENGINEER RICK DOWNS TSC2301EVM - INTERFACE DRAWN BYRICK DOWNS DOCUMENT CONTROL NO.6438188 SHEET 2 1 2 3 4 5 OF 2 SIZE B DATE 21-Nov-2002 REV A FILE 6 A