Altera tPad DE2-115 User manual

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CONTENTS
Chapter 1 Introduction of the tPad.....................................................................2
1.1 About the Kit ........................................................................................................................................6
1.2 Getting Help .........................................................................................................................................7
Chapter 2 tPad Architecture ...............................................................................8
2.1 Layout and Components........................................................................................................................8
2.2 Block Diagram of the tPad....................................................................................................................9
Chapter 3 Using the tPad..................................................................................10
3.1 Configuring the Cyclone IV E FPGA ..................................................................................................10
3.2 Bus Controller.....................................................................................................................................13
3.3 Using the 8” LCD Touch Screen Module.............................................................................................14
3.4 Using 5-Megapixel Digital Image Sensor Module ...............................................................................15
Chapter 4 tPad Demonstrations .......................................................................17
4.1 System Requirements..........................................................................................................................17
4.2 Factory Configuration.........................................................................................................................17
4.3 tPad Starter Demonstration..................................................................................................................18
4.4 tPad Picture Viewer.............................................................................................................................22
4.5 Video and Image Processing................................................................................................................25
4.6 tPad Camera Application.....................................................................................................................28
4.7 Video and Image Processing for Camera .............................................................................................31
Chapter 5 Application Selector .........................................................................36
5.1 Ready to Run SD Card Demos............................................................................................................36
5.2 Running the Application Selector........................................................................................................37
5.3 Application Selector Details................................................................................................................37
5.4 Restoring the Factory Image................................................................................................................40
Chapter 6 Appendix..........................................................................................42
6.1 Revision History.................................................................................................................................42
6.2 Copyright Statement............................................................................................................................42

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Chapter 1
Introduction of the tPad
The tPad Embedded Evaluation Kit is a comprehensive design environment with everything
embedded developers need to create processing-based systems. The tPad delivers an integrated
platform that includes hardware, design tools, intellectual property (IP) and reference designs for
developing embedded software and hardware platform in a wide range of applications. The fully
integrated kit allows developers to rapidly customize their processor and IP to best suit their specific
application. The tPad features the DE2-115 development board targeting the Cyclone IV E FPGA,
as well as a LCD multimedia color touch panel and a 5-Megapixel digital image sensor module.
The tPad is preconfigured with an FPGA hardware reference design including several Ready-to-Run
demonstration applications stored on the provided SD-Card. Software developers can use these
reference designs as their platform to quickly architect, develop and build complex embedded
systems. By simply scrolling through the demo of your choice on the LCD multimedia color touch
panel, you can evaluate numerous processor system designs.
The all-in-one embedded solution offered on the tPad, in combination of the LCD touch panel and
digital image module, provide embedded developers the ideal platform for multimedia applications
with unparallel processing performance. Developers can benefit from the use of FPGA-based
embedded processing system such as mitigate design risk and obsolescence, design reuse, reducing
bill of material (BOM) costs by integrating powerful graphics engines within the FPGA, and lower
cost.
Figure 1-1 shows a photograph of the tPad.

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Figure 1-1 The tPad board overview
The key features of the board are listed below:
DE2-115 Development Board
Cyclone IV EP4CE115 FPGA
o114,480 LEs
o432 M9K memory blocks
o3,888 Kbits embedded memory
o4 PLLs
Configuration
oOn-board USB-Blaster circuitry
oJTAG and AS mode configuration supported
oEPCS64 serial configuration device
Memory Devices
o128MB SDRAM
o2MB SRAM
o8MB Flash with 8-bit mode
o32Kbit EEPROM
Switches and Indicators
o18 switches and 4 push-buttons
o18 red and 9 green LEDs
oEight 7-segment displays

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Audio
o24-bit encoder/decoder (CODEC)
oLine-in, line-out, and microphone-in jacks
Display
o16x2 LCD module
On-Board Clocking Circuitry
oThree 50MHz oscillator clock inputs
oSMA connectors (external clock input/output)
SD Card Socket
oProvides SPI and 4-bit SD mode for SD Card access
Two Gigabit Ethernet Ports
oIntegrated 10/100/1000 Gigabit Ethernet
High Speed Mezzanine Card (HSMC)
oConfigurable I/O standards (voltage levels: 3.3/2.5/1.8/1.5V)
USB Type A and B
oProvide host and device controller compliant with USB 2.0
oSupport data transfer at full-speed and low-speed
oPC driver available
40-pin Expansion Port
oConfigurable I/O standards (voltage levels: 3.3/2.5/1.8/1.5V)
VGA-out Connector
oVGA DAC (high speed triple DACs)
DB9 Serial Connector
oRS232 port with flow control
PS/2 Connector
oPS/2 connector for connecting a PS2 mouse or keyboard
TV-in Connector
oTV decoder (NTSC/PAL/SECAM)
Remote Control
oInfrared receiver module

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Power
oDesktop DC input
oSwitching and step-down regulators LM3150MH
LCD touch screen module
Equipped with an 8-inch Amorphous-TFT-LCD (Thin Film Transistor Liquid Crystal Display)
module
Module composed of LED backlight
Support 18-bit parallel RGB interface
Converting the X/Y coordination of touch point to its corresponding digital data via the
Analog Devices AD7843 A/D converter
Table 1-1 shows the general physical specifications of the LTC (Note*).
Table 1-1 General physical specifications of the LCD
Item
Specification
Unit
LCD size
8 inch (Diagonal)
-
Resolution
800 x3(RGB) x 600
dot
Dot pitch
0.0675(W) x 0.2025(H)
mm
Active area
162.0(W) x 121.5(H)
mm
Module size
183.0(W) x 141.0(H) x 7.2(D)
mm
Surface treatment
Anti-Glare
-
Color arrangement
RGB-stripe
-
Interface
Digital
-
5-Megapixel digital image sensor module
Superior low-light performance
High frame rate
Low dark current
Global reset release, which starts the exposure of all rows simultaneously
Bulb exposure mode, for arbitrary exposure times
Snapshot mode to take frames on demand
Horizontal and vertical mirror image
Column and row skip modes to reduce image size without reducing field-of-view
Column and row binning modes to improve image quality when resizing
Simple two-wire serial interface
Programmable controls: gain, frame rate, frame size, exposure
Table 1-2 shows the key parameters of the CMOS sensor (Note*).

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Table 1-2 Key performance parameters of the CMOS sensor
Parameter
Value
Active Pixels
2592Hx1944V
Pixel size
2.2umx2.2um
Color filter array
RGB Bayer pattern
Shutter type
Global reset release(GRR)
Maximum data rate/master clock
96Mp/s at 96MHz
Frame rate
Full resolution
Programmable up to 15 fps
VGA mode
Programmable up to 70 fps
ADC resolution
12-bit
Responsivity
1.4V/lux-sec(550nm)
Pixel dynamic range
70.1dB
SNRMAX
38.1dB
Supply Voltage
Power
3.3V
I/O
1.7V～3.1V
Note: for more detailed information of the LCD touch panel and CMOS sensor module,
please refer to their datasheets respectively.
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1. .1 1 A Ab bo ou ut t t th he e K Ki it t
The kit contains all users needed to run the demonstrations and develop custom designs, as shown
in Figure 1-2.
The system CD contains technical documents of the tPad which includes component datasheets,
demonstrations, schematic, and user manual.

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Figure 1-2 tPad kit package contents
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1. .2 2 G Ge et tt ti in ng g H He el lp p
Here is information of how to get help if you encounter any problem:
Terasic Technologies
Tel: [phone]
Email: [e-mail]

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Chapter 2
tPad Architecture
This chapter describes the architecture of the tPad including block diagram and components.
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2. .1 1 L La ay yo ou ut t a an nd d C Co om mp po on ne en nt ts s
The picture of the tPad is shown in Figure 2-1 and Figure 2-2. It depicts the layout of the board and
indicates the locations of the connectors and key components.
Figure 2-1 tPad PCB and component diagram (top view)

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Figure 2-2 tPad PCB and component diagram (bottom view)
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2. .2 2 B Bl lo oc ck k D Di ia ag gr ra am m o of f t th he e t tP Pa ad d
Figure 2-3 gives the block diagram of the tPad board. To provide maximum flexibility for the user,
all connections are made through the Cyclone IV E FPGA device. Thus, the user can configure the
FPGA to implement any system design.
Figure 2-3 Block Diagram of tPad