User's Guide SLAU178 – April 2006 TSC2111EVM and TSC2111EVM-PDK This user's guide describes the characteristics, operation, and use of the TSC2111EVM, both by itself and as part of the TSC2111EVM-PDK. This evaluation module (EVM) is a touch screen controller evaluation module, with auxiliary inputs and battery and temperature measurement capabilities, and also a complete stereo audio codec evaluation module, with several audio inputs and outputs, side tone, key click, and effects capabilities.
www.ti.com 14 15 16 17 18 19 20 21 22 23 Component Layout ......................................................................................................... Top PCB Layer ............................................................................................................. Power/Ground Plane 1 .................................................................................................... Power/Ground Plane 2 ...............................................................................
www.ti.com EVM Overview 1 EVM Overview 1.1 Features • • Full-featured evaluation board to evaluate/test the TSC2111 functions and features Modular design for use with a variety of DSP and microcontroller interface boards The TSC2111EVM-PDK is a complete evaluation kit, which includes a TSC2111EVM board, a universal serial bus (USB)-based motherboard, and the evaluation software for use with a personal computer running Microsoft Windows™ operating systems (Win2000 or XP). 1.
www.ti.com Getting Started 2.2 Default Configuration The TSC2111EVM or EVM-PDK features a few simple means of configuring its operation. The default settings of the EVM board are shown in Table 1, and the default settings of the USBMODEVM board are shown in Table 2. When you unpack your TSC2111EVM-PDK, ensure that both boards have been initially configured as listed in the two tables. Table 1.
www.ti.com Getting Started Table 2. USBMODEVM Board Default Configuration Settings Board Identifier SW1 SW2 JMP1 Description Onboard power supply enable On/Off board control selection +5VA and +5VD connection Default Settings SW1-1: +1.8VD Enable On: Enabled SW1-2: +3.
www.ti.com Getting Started 2.3 Connection The TSC2111 EVM-PDK allows direct evaluation of the TSC2111 device with a personal computer. The TSC2111EVM board, as the daughtercard, is installed on the top of the USBMODEVM motherboard, as shown in Figure 1. Use a USB cable to connect the PC to the EVM system through the J7 USB connector on the USBMODEVM card. Figure 1.
www.ti.com Getting Started 2.4 Quick Start After the TSC2111EVM-PDK has been unpacked, and you have verified that both the daughter board (TSC2111EVM) and the motherboard (USBMODEVM) had been configured as shown in Table 1 and Table 2, and connected as shown in Figure 1, install the software from the included CD-ROM. Run the Setup program on the supplied CD-ROM to install the TSC2111EVM software on your PC. Follow the instructions provided by the installer.
www.ti.com Program Description 3 Program Description After installing the software for the TSC2111EVM as previously described, the user can begin to evaluate the functions of the TSC2111 using the evaluation-software graphic user interface (GUI). The program’s interface is a simple, six-tab interface. Clicking on a tab takes you to the functions associated with that tab. The program begins on the Human Interface screen (the default) as shown in Figure 2. 3.
www.ti.com Program Description The X and Y, or X, Y, and Z mode is selected by clicking on the option at the A/D Mode Selection Box. The touch action is shown on the screen in dot mode, as shown in Figure 3, or solid line mode as shown in Figure 4. The dot line mode is selected by the corresponding option above the drawing screen. Figure 4. Human Interface Screen (Line Mode) The display can be cleared by pressing Enter on the PC keyboard.
www.ti.com Program Description 3.2 Data Acquisition Screen Clicking on the Data Acquisition tab brings up the screen as shown in Figure 5. Figure 5. Data Acquisition Screen 3.2.1 Nontouch Data Acquisition At this screen, while the Buffer Mode is not enabled, the TSC2111 samples the battery and auxiliary input voltage readings, and then the TEMP1 and TEMP2 measurements. These measurements are all repeated twice per second, and the results are displayed on the three boxes at the left side of this screen.
www.ti.com Program Description 3.2.2 Buffer Function In the middle of the screen are the Buffer Mode settings. By default, the buffer function is disabled, and all touch or non-touch data are converted and stored to the corresponding registers. When the buffer function is enabled by checking the Enable option, the data is converted and saved to the buffer registers in Page 3 of the TSC2111 memory space. Refer to the data sheet for the details of the buffer function.
www.ti.com Program Description Figure 7. Data Acquisition Screen, Reading Content Box The Buffer Trigger level slider can be set to either 8 or 16. Even though the TSC2111 can be set to a higher trigger level up to 64, this EVM allows only 8 or 16. The buffer function can be controlled in either Continuous or Single Shot mode, which is selected on the mode-control option box. Refer to the data sheet for more on the TSC2111 buffer function.
www.ti.com Program Description 3.3 Configuration Screen This screen accesses all the configurable settings for the TSC2111 analog-to-digital converter (ADC) and reference as shown in Figure 8. Figure 8. Configuration Screen 3.3.1 ADC Control Section The ADC Control box has a check box to disable the Pen Touch Detection function of TSC2111. See the TSC2111 Data Sheet for information about this function.
www.ti.com Program Description 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. 3.3.2 Reference Section The touch screen function is always performed using a ratiometric or differential mode on this EVM set to obtain better touch readings.
www.ti.com Program Description 3.3.3 Measurement Section The TSC2111 supports programmable, automatic temperature and auxiliary-input measurements. In the auto measurement mode, the TSC2111 can auto start the TEMP1, TEMP2, AUX1, and/or AUX2 measurement after a programmable interval. The checkboxes and sliders in the Measurement section provide choices. Additionally, the AUX1 and AUX2 can be configured to measure voltage or resistance.
www.ti.com Program Description 3.4 Audio Screens Three tabs control the TSC2111 audio functions: Audio 1, Audio 2, and Audio Effects Filters tabs. Figure 10 shows the default configuration of the Audio 1 tab with the following sections: • INTERFACE: Audio I2S port • PLL: PLL parameters, FSref frequency • ADC: Audio ADC, ADC input source selection • DAC/Outputs: Audio DAC, other analog-output features • GPIO1: GPIO1 function/status • GPIO2: GPIO2 function/status Figure 10.
www.ti.com Program Description Figure 11 shows the default condition of the Audio 2 tab. The functions and setting on Audio 2 primarily control the audio analog inputs with the following sections: • HeadSet: Headset input power and gain control (PGA or AGC) function and other headset specified functions. • HandSet: Handset input power and gain control (PGA or AGC) function and other handset specified functions. • Cell Phone: Cell-phone input power and gain control (PGA or AGC) function.
www.ti.com Program Description Figure 12 shows the default configuration of the AudioEffects Filters tab. This tab displays the boost filters, the de-emphasis filter, and the DAC and output driver pop-noise reduction functions. Figure 12. Bass Boost Filter Screen Default Configuration 3.4.1 Interface Section This section (refer to Figure 10) controls the behavior of the I2S port (BCLK, LRCLK, DIN, and DOUT pins).
www.ti.com Program Description 3.4.2 PLL Section There is an on-chip phase-locked loop (PLL) in the TSC2111. The PLL can be enabled or disabled, based on the given master clock (MCLK) to the TSC2111 and the required reference frequency (FSref) for the codec. For more details on the PLL, refer to the TSC2111 data sheet. The PLL can be set on the PLL Secton of Audio 1 screen (Figure 10). The default frequencies for this EVM board are • MCLK = 11.2896 MHz • Reference sample rate = 44.
www.ti.com Program Description Other signals, such as the SideTone, KeyClick, CP_IN, and BUZZ_IN can be routed to speaker 1 (SP1), speaker 2 (SP2), and/or the loud speaker (LoudSP). Signal selection can be done in this section by checking the corresponding checkbox. The signals to SP1, SP2, or the ADC can be output to the TSC’s cellphone output pin, and the BUZZ_IN, SP1 and SP2 signals can also be output the BUZZ_IN PGA. The DAC PGA gain can be set to soft-stepping mode.
www.ti.com Program Description 3.4.7 Handset Section Similar to the headset section, the handset section is used mainly to configure the handset input gain through the handset PGA or the AGC, selectable by the Handset Input AGC ON checkbox. By default, when the handset AGC is OFF, and the programmable gain amplifier (PGA) is selected for the input gain control, allowing analog input gain control from 0 dB to 59.5 dB.
www.ti.com Program Description 3.4.12 Audio Effects The programmable Audio Effects filters coefficients of the TSC2111 can be accessed in the Audio Effect Filters screen, as shown in Figure 12. Different filter coefficients can be loaded for left and right channels, although these are typically set to the same values. If changes are made directly to coefficient values, the response can be viewed on the graph by clicking the View Response button.
www.ti.com Other Board Level Connections 3.4.14 Power-Up Pop Reductions Settings on this tab can reduce the pop noise heard at the moment the TSC2111 output circuit is powered up. The pop noise reduction can be set on the DAC or the analog output driver circuit. Click on the Enable DAC HP PR checkbox to enable the DAC pop-reduction feature, and the Enable Driver PR checkbox to enable the output driver pop-reduction feature. Change the Driver PR Duration to set and optimize the noise reduction effects.
www.ti.com Other Board Level Connections Table 3. Analog Interface Pinout (continued) Pin Number Signal Description J2.10 MIC_DETECT_IN Microphone detect input J2.11 AGND Analog ground J2.12 SPKFC Driver feedback/speaker detect input J2.13 AGND Analog ground J2.14 MICIN_HND Handset microphone input J2.15 NC Not connected J2.16 MICBIAS_HND Handset microphone bias voltage J2.17 AGND Analog ground J2.18 NC Not connected J2.19 AGND Analog ground J2.
www.ti.com Other Board Level Connections Table 5. Digital Interface Pinout (continued) Pin Number 4.3 Signal Description J4.14 RESET TSC2111 reset J4.15 PINTDAV Pen-interrupt/data-available output J4.16 SCL I2C interface clock line J4.17 NC Not Connected J4.18 DGND Digital ground J4.19 PWR_DN Hardware power down input J4.20 SDA I2C interface data line J5.1 NC Not Connected J5.2 NC Not Connected J5.3 BCLK I2S interface audio bit clock J5.4 DGND Digital ground J5.
www.ti.com Other Board Level Connections 4.3.1 Stand-Alone Operation When used as a stand-alone EVM, power can be applied to J3 directly. The user must reference the supplies to the appropriate grounds on that connector. CAUTION Verify that all power supplies are within the safe operating limits shown on the TSC2111 data sheet before applying power to the EVM. 4.3.
www.ti.com Physical Description 5 Physical Description This chapter contains the bill of materials, the TSC2111 EVM board layout, and the schematics. 5.1 Bill of Materials Table 7. TSC2111EVM Bill of Materials Item Qty Value Ref. Des. Description Manufacturer Part Number 1 6 0Ω R9-R14 1/8W 5% Chip Resistor Panasonic ERJ-6GEY0R00V 2 1 0Ω R25, R27 1/4W 5% Chip Resistor Panasonic ERJ-8GEY0R00V 3 1 220 Ω R15 1/8W 5% Chip Resistor Panasonic ERJ-6GEYJ221V 4 1 2.
www.ti.com Physical Description Table 7. TSC2111EVM Bill of Materials (continued) 28 Item Qty Ref. Des. Description Manufacturer Part Number 28 3 Value JMP1, JMP2, JMP11 2 Position Jumper , 0 .1" spacing Samtec TSW-102-07-L-S Not 2 Installed JMP3, JMP4 2 Position Jumper , 0 .1" spacing Samtec TSW-102-07-L-S 29 2 JMP13, JMP14 3 Position Jumper , 0 .1" spacing Samtec TSW-103-07-L-S 30 2 JMP10, JMP15 3 X 2 Position Header, 0 .
www.ti.com Physical Description 5.2 TSC2111 EVM (Daughter) Board Layout Figure 14.
www.ti.com Physical Description Figure 15.
www.ti.com Physical Description Figure 16.
www.ti.com Physical Description Figure 17.
www.ti.com Physical Description Figure 18.
www.ti.com Physical Description Figure 19. Bottom Silkscreen and Solder Mask 5.3 Schematics Schematic diagrams of the TSC2111EVM/TLV320AIC29EVM daughter board show the TSC2111 analog connections to the external Input/output devices (such as the headphone, or microphone); and the digital connections to the USB-MODEVM board and other external digital devices through its connectors.
4Y - 3X + 2Y + 1X - 4 3 2 1 AUX2 AUX1 VBAT 0 0 R12 0 R11 CP OUT/CP OUT+ CP OUT - 3 4 CELL I/O CP IN/CP IN+ BUZZ IN/CP IN- 5 0 R14 0 R13 220 R15 1 R16 NI R18 NI AUX2 AUX1 CP_OUT- C26 0.1uF C22 0.1uF Y+ TP4 D3A NI D3B NI CP_OUT+ 2 C25 0.1uF JPR-2X1 JMP3 C20 0.1uF C21 0.1uF X- R16 through R19, JMP3 and JMP4 are not installed, but can be used for resistance measurements on the AUX pins.
+5VA C1 0.
2 4 1 3 J9 6VDC-10VDC IN EXT PWR IN ED555/2DS J8 897-30-004-90-000000 GND D+ DVCC 4 3 2 1 J7 USB SLAVE CONN CUI-STACK PJ102-B 2.5 MM SCL EXTERNAL I2C J6 SDA R10 +5VD C16 0.33uF 5 JMP7 1 2 3 4 5 6 2 R3 2.7K C13 47pF TP6 IOVDD VOUT JMP6 PWR SELECT IOVDD SELECT VIN VSS VCC U1 24LC64I/SN U2 REG1117-5 27.4 R11 27.4 8 C9 1uF 4 +3.3VD 1.5K R9 3 +3.3VD +1.8VD C15 DL4001 0.1uF D1 TP10 Q2 ZXMN6A07F TP9 C14 47pF C6 10uF R5 2.7K +3.
10uF C1 10uF C2 GREEN J2 +5VA +5VA GREEN R22 390 TP2 D7 SML-LX0603GW-TR J1 -5VA -5VA JPR-2X1 JMP1 1 2 +5VD D6 SML-LX0603GW-TR R21 390 TP1 +5VA A0(+) A1(+) A2(+) A3(+) A4 A5 A6 A7 REFREF+ 2 4 6 8 10 12 14 16 18 20 C3 2 4 6 8 10 12 14 16 18 20 DAUGHTER-ANALOG A0(-) A1(-) A2(-) A3(-) AGND AGND AGND VCOM AGND AGND J21 A0(+) A1(+) A2(+) A3(+) A4 A5 A6 A7 REFREF+ 10uF J3 +5VD +5VD J21A (TOP) = SAM_TSM-110-01-L-DV-P J21B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K 1 3 5 7 9 11 13 15 17 19 TP
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