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User's Guide

SBAU109 – March 2005

TSC2003EVM and TSC2003EVM-PDK User's Guide

This user's guide describes the characteristics, operation, and use of the

TSC2003EVM, both by itself and as part of the TSC2003EVM-PDK. This evaluation

module (EVM) is a 4-wire touch screen controller EVM which also has auxiliary inputs

and battery and temperature measurement capabilities. A complete circuit description,

schematic diagram and bill of materials are included.

The following related documents are available through the Texas Instruments web site

at www.ti.com .

Table 1. EVM-Compatible Device Data Sheets

DEVICE LITERATURE NUMBER

TSC2003 SBAS162

TAS1020B SLES025

REG1117-5 SBVS001

TPS767D318 SLVS209

SN74LVC125A SCAS290

SN74LVC1G125 SCES223

SN74LVC1G07 SCES296

Contents

1 EVM Overview ............................................................................................................... 2

2 Analog Interface .............................................................................................................. 2

3 Digital Interface .............................................................................................................. 3

4 Power Supplies .............................................................................................................. 3

5 EVM Operation ............................................................................................................... 4

6 Kit Operation ................................................................................................................. 5

7 EVM Bill of Materials ....................................................................................................... 10

8 TSC2003EVM Schematic ................................................................................................. 12

9 USB-MODEVM Schematic ................................................................................................ 12

List of Figures

1 TSC2003EVM-PDK Block Diagram ...................................................................................... 6

2 Default Software Screen ................................................................................................... 8

List of Tables

1 EVM-Compatible Device Data Sheets .................................................................................... 1

2 Analog Interface Pin Out .................................................................................................... 2

3 Digital Interface Pin Out ..................................................................................................... 3

4 Power Supply Pin Out ....................................................................................................... 3

5 Power Selection Options - JMP5 .......................................................................................... 3

6 List of Jumpers ............................................................................................................... 5

TSC2003EVM and TSC2003EVM-PDK User's GuideSBAU109 – March 2005 1

Summary of content (17 pages)

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User's Guide SBAU109 – March 2005 TSC2003EVM and TSC2003EVM-PDK User's Guide This user's guide describes the characteristics, operation, and use of the TSC2003EVM, both by itself and as part of the TSC2003EVM-PDK. This evaluation module (EVM) is a 4-wire touch screen controller EVM which also has auxiliary inputs and battery and temperature measurement capabilities. A complete circuit description, schematic diagram and bill of materials are included.
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www.ti.com EVM Overview TSC2003EVM Bill of Materials ........................................................................................... 10 USB-MODEVM Bill of Materials .......................................................................................... 11 7 8 1 EVM Overview 1.1 Features • • Full-featured evaluation board for the TSC2003 4-wire resistive touch screen controller (TSC). Modular design for use with a variety of DSP and microcontroller interface boards.
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www.ti.com Digital Interface 3 Digital Interface The TSC2003EVM is designed to easily interface with multiple control platforms. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual row header/socket combination at J2. This header/socket provides access to the digital control and serial data pins of the TSC. Consult Samtec at www.samtec.com or call 1-800-SAMTEC-9 for a variety of mating connector options. Table 3.
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www.ti.com EVM Operation 4.2 Stand-Alone Operation When used as a stand-alone EVM, power can be applied to TP2, referenced to TP1. CAUTION Verify that all power supplies are within the safe operating limits shown on the TSC2003 data sheet before applying power to the EVM. 4.
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www.ti.com Kit Operation 5.2 Digital Control The digital control signals can be applied directly to J2 (top or bottom side). The modular TSC2003EVM can also be connected directly to a DSP or microcontroller interface board, such as the HPA449, or to the USB-MODEVM Interface board if purchased as part of the TSC2003EVM-PDK. See the product folder for the EVM or the TSC2003 for a current list of compatible interface and/or accessory boards. 5.
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www.ti.com Kit Operation 6.1 TSC2003EVM-PDK Block Diagram A block diagram of the TSC2003EVM-PDK is shown in Figure 1. The evaluation kit consists of two circuit boards connected together. The motherboard is designated as the USB-MODEVM Interface board, while the daughtercard is the TSC2003EVM described previously in this manual.
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www.ti.com Kit Operation After the main program is installed, a dialog box appears with instructions for installing NI-VISA 3.2 Runtime, a self-extracting archive. Click OK to proceed. A WinZip™ dialog appears. Click Unzip, and the archive extracts itself and automatically runs the NI-VISA 3.2 Runtime installer. Follow the instructions in the NI-VISA 3.2 Runtime Installer. When prompted for which features to install, do the following: 1. Click on the disk icon next to NI-VISA 3.2 2.
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www.ti.com Kit Operation Figure 2. Default Software Screen In order to use the touch screen features, a 4-wire resistive touch screen will need to be connected to J1 of the TSC2003EVM, as described earlier. 6.3 USB-MODEVM Interface Board The simple diagram shown in Figure 1 shows only the basic features of the USB-MODEVM Interface board. The board is built around a TAS1020B streaming audio USB controller with an 8051-based core.
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www.ti.com Kit Operation 6.4 Program Description After the TSC2003EVM-PDK software installation (described in Section 6.2), evaluation and development with the TSC2003 can begin. 6.4.1 Touch Screen Functions Panel The touch screen box in this panel will be updated when a touch is detected on the touch screen. As the touch screen is drawn upon, the motion on the touch screen will be translated into pixels on this box.
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www.ti.com EVM Bill of Materials The format of the data file has the first column as the time in milliseconds (which is just a timer in the program; it can arbitrarily start at any number), then X, Y, Z1, Z2, VBAT1, VBAT2, AUX1, AUX2, TEMP0, and TEMP1 columns. Every new reading is a new row in the file. 7 EVM Bill of Materials Table 7 and Table 8 contain a complete bill of materials for the modular TSC2003EVM and the USB-MODEVM Interface Board (included only in the TSC2003EVM-PDK). Table 7.
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www.ti.com EVM Bill of Materials Table 8. USB-MODEVM Bill of Materials REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER MFG. PART NUMBER R4 10Ω 1/10W 5% Chip Resistor Panasonic ERJ-3GEYJ100V R10, R11 27.
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www.ti.com TSC2003EVM Schematic Table 8. USB-MODEVM Bill of Materials (continued) 8 REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER MFG. PART NUMBER TP1, TP2, TP3, TP4, TP5, TP6, TP9, TP10, TP11 Miniature test point terminal Keystone Electronics 5000 TP7, TP8 Multipurpose test point terminal Keystone Electronics 5011 J7 USB Type B Slave Connector Thru-Hole Mill-Max 897-30-004-90-000000 J1, J2, J3, J4, J5, J8 2-position terminal block On Shore Technology ED555/2DS J9 2.
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1 2 3 4 6 5 REVISION HISTORY REV ENGINEERING CHANGE NUMBER APPROVED D D Vcc Vcc R9 2.
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1 2 3 4 6 5 REVISION HISTORY REV IOVDD R5 2.7K 2 5 9 12 1 USB MCK 4 10 USB I2S 13 J6 Q2 ZXMN6A07F EXTERNAL I2C SDA SCL WP 8 A0 A1 A2 U1 VCC C9 1uF 4 1 1 3 5 7 9 11 3 2 44 43 42 41 40 39 37 38 36 35 34 32 R12 3.09K .001uF R10 27.4 R11 C13 47pF C14 47pF R7 2.7K JMP8 1 2 P1.2 P1.1 P1.0 +3.3VD C11 1uF C12 1uF C MOSI SS SCLK RESET 14 VCC J15 1 3 5 7 9 11 3 6 8 11 1Y 2Y 3Y 4Y 7 GND 2 4 6 8 10 12 EXTERNAL SPI USB RST USB SPI P3.5 JMP13 1 2 D2 +3.3VD YELLOW C25 R8 2.
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1 2 3 4 5 6 REVISION HISTORY REV ENGINEERING CHANGE NUMBER APPROVED D 1 2 3 D J11 J12 A0(+) A1(+) A2(+) A3(+) A4 A5 A6 A7 REFREF+ 2 4 6 8 10 12 14 16 18 20 +5VA J13A (TOP) = SAM_TSM-105-01-L-DV-P J13B (BOTTOM) = SAM_SSW-105-22-F-D-VS-K DAUGHTER-ANALOG J11A (TOP) = SAM_TSM-110-01-L-DV-P J11B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K +5VA +5VD JMP1 1 2 +VA +5VA DGND +1.8VD +3.3VD -VA -5VA AGND VD1 +5VD 2 4 6 8 10 GPIO0 DGND GPIO1 GPIO2 DGND GPIO3 GPIO4 SCL DGND SDA SCLK SS P3.
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FCC Warnings 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.
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