Interactive LCD面板的介面電路設計與實現使用ARM處理器

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研究生：	陳億城 I-Chen Chen
論文名稱：	Interactive LCD面板的介面電路設計與實現使用ARM處理器 Interface circuit Design and Implementation for Interactive LCD panel with ARM processor
指導教授：	黃惠良 Huey-Liang Hwang 楊武智 Wu-Zhi Yang
口試委員:
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 產業研發碩士積體電路設計專班 Industrial Technology R&D Master Program on IC Design
論文出版年：	2007
畢業學年度：	95
語文別：	英文
論文頁數：	50
中文關鍵詞：	介面電路
外文關鍵詞：	ARM processor, OMAP5912, interface circuit, LCD panel
相關次數：	點閱：101 下載：0
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摘要
近年來，可攜式設備使用小尺寸的LCD面版來顯示訊息變得越來越普遍，小尺寸的LCD面版的優點是低電壓、體積小。小尺寸的LCD面版大部份運用在PDA、行動電話、GPS、數位相機和電視遊樂器;在高科技產業上，LCD面版上配合光電晶體元件，則LCD面版將可以接受外界光源訊號輸入。本論文針對5吋Interactive LCD面版上設計一個介面電路兼具有微處理器功能。當光筆投射在Interactive LCD面版上時，介面電路可顯現出光筆的位置。為了開發符合LCD面版規格的介面電路，而介面電路要能夠符合LCD面版規格中低電壓的需求和兼具有微處理器功能，也為了節省重新定義一個微處理器架構，以降低開發成本。因此，使用OMAP平台和介面電路整合成一個系統，已符合LCD面版規格的需求。

Abstract
Nowadays, handheld devices with small LCD panel for information display have become very popular, they have advantage of small size and low-power. The application of small LCD panel has extended to different areas such as PDA, mobile phone, GPS, camera and TV game. In new technology, by embedded phototransistors, the panel can also be used as an image input device. In this study we investigate the design of interface circuit for this dual purposes application and do the implementation in an OMAP environment. The interface circuit is suitable for low-power standard LCD panel too. OMAP environment provides a reliable microcontroller function for the interface circuit design. By the study the panel light-pen input signal can be accessed and processed in the AMR processor.

Contents
Chinese abstract…………………………………………………….…….Ⅰ
English abstract………………………………………….………………..Ⅱ
Acknowledgement……………………………………………………...…Ⅲ
Contents……………………………………………………………………Ⅳ
List of Figures……………………………………………………………..Ⅵ
List of Tables………………………………………………………………Ⅸ
Chapter 1 Applications of Embedded system
 1-1 Introduction to Embedded system……………………….…………….1
 1-2 Application example 1:
GPS of Smart navigation system with ARM process
1-2-1 Physics implementation………………………….………………3
1-2-2 Software development platform…………………………………4
1-3 Application example 2:
  JPEG2000 compression standard in DSP processor
1-3-1 TMS320DSC25 system Architecture……………………………6
1-3-2 Still image compression process flow in TMS320DSC25………7
1-3-3 Transfer Data using DMA…………….…………………………8
1-3-4 DWT and Tier-1 coding with DSP…….…………………….......9
Chapter 2 OMAP 5912 and JTAG
2-1 OMAP 5912 Target Module….……………………………………….10
2-2 OMAP 5912 Component……………………….…………………......12
2-2-1 DDR Device…………………………........................................12
2-2-2 Audio Code………………………..............................................13
2-2-3 JTAG Interface………….…………............................................14
2-2-4 Serial port……………………….................................................15
2-2-5 Ethernet…………………………………………………………15
2-2-6 USB interface...............................................................................16
2-2-7 General-purpose interface............................................................17
2-2-8 Expansion Connectors ................................................................18
2.3 Code Composer Studio........................................................................20
2.4 JTAG structure ...................................................................................21
Chapter 3 LCD panel structure and Interface circuit design
3-1 LCD structure…………………………………………….……..…….25
3-1-1 Scanning method of the LCD……………………….….………25
3-1-2 LCD architecture and specification………………….…….…...28
3-1-3 Electric characteristic of LCD panel from oscillograph..............29
3-2 Interface circuit structure design………………………….….……….34
3-3 Interface circuit between LCD panel and OMAP5912….……………38
Chapter 4 System structure and Implementation
4-1 System structure with OMAP5912…………….……………..….…...40
4-2 Transfer data using GPIO……………………………………...…..…41
4-3 Detected position process flow in OMAP5912………………..…..…42
4-4 Result…………………………………………………………………47
Chapter 5 Conclusions ……………………………..………………….…49
Reference………………………………………………………………….50

List of Figure
Figure 1-1 Embedded system : component and applications
Figure 1-2 Embedded product development procedure
Figure 1-3 Smart navigation System structure
Figure 1-4 Graph interface system structure
Figure 1-5(a) program Process flow
Figure 1-5(b) program Process flow
Figure 1-6 TMS320DSC25 Architecture
Figure 1-7 still image compression process
Figure 1-8 DMA data transfer
Figure 1-9 2D-DWT process flow
Figure 2-1 OMAP5912 Target Module Block Diagram
Figure 2-2 OMAP5912 Starter Kit Board
Figure 2-3 DDR SDRAM circuit
Figure 2-4 AIC23 Audio CODEC circuit
Figure 2-5 JTAG Interface circuit
Figure 2-6 Serial Port Interface circuit
Figure 2-7 10Mb Ethernet Interface circuit
Figure 2-8 USB Host Circuit
Figure 2-9 GPIO black diagram
Figure 2-10 Code Composer Stdio
Figure 2-11 JTAG times
Figure 2-12 TAP Controller Stat Transitions
Figure 2-13 JTAG Emulator link to OMAP5912 Board
Figure 3-1 (a) Field one / odd lines Starts with full line End with half line (b)
First vertical blanking interval Starts with half line Ends with half line (c) Field two /even lines Starts with half line End with full line (d) Second vertical blanking interval Starts with full line Ends with full line
Figure 3-2 LCD Structure, Stvl and CKV times
Figure 3- 3 (a) Stvl, Ckv and Vcom in odd times. Figure 3-3 (b) Stvl, Ckv and Vcom in even times
Figure 3-4 non-backlight mode
Figure 3-5 backlight mode
Figure 3-6 LCD panel of the frame out
Figure 3-7(a) LCD panel with no light pen. (b) light-pen shines a light spot on the LCD panel
Figure 3-8 LCD panel output from Vcom
Figure 3-9 LCD panel output from Ckv
Figure 3-10 LCD panel output from STVL
Figure 3-11 interface circuit diagram
Figure 3-12 OMAP5912 Board and interface circuit
Figure 3-13 Interface circuit schematic
Figure 3-14 The RC filter and the rectifier
Figure 3-15 Diode as the switch
Figure 3-16 opposite voltage amplifier schematic
Figure 3-17 Interface circuit between LCD panel and OMAP5912 diagram
Figure 3-18 Interface circuit between LCD panel and OMAP5912
Figure 4-1 System structure diagram
Figure 4-2 Initialization ARM processor by JTAG mode
Figure 4-3 Detecting position flow chart
Figure 4-4 vertical position flow chart
Figure 4-5 Horizontal position flow chart
Figure 4-6 the counter number flow chart
Figure 4-7 Light point position display in the LCM from LCD panel
Figure 4-8 The LCD panel will be divided 16 area
Figure 4-9 The light-pen shines a light spot on the LCD panel
Figure 4-10 OMAP5912 display light point position

List of Tables
Table 2-1 JTAG Pinout
Table 4-1 GPIO register

                                

Reference
[1] TEXAS INSTRUMENTS, OMAPTm Starter Kit (OSK) OMAP5912Tm Target Module reference manual, ” ver. 2.3
TEXAS INSTRUMENTS Corporation, http://www.ti.com.tw
[2] Arnold S. Berger, Embedded Systems Design: An Introduction to Processes, Tools, and Techniques . CMP Books, 2002
[3] Karim Yaghmour, Building Embedded Linux Systems.
O'Reilly, April 2003
[4] Chassaing, Rulph, DSP applications using C and the TMS320C6x DSK . New York :J. Wiley,2002.,
[5] Walter Ciciora, James Farmer, David Large, Modern television technology – video, voice and data communications, San Francisco: Morgan Kaufmann, 1999
[6] Bernard Grob, Charles Herndon, Basic television and video systems. Singapore, 1999
[7] Richard Zurawski, Embedded systems handbook, Taylor & Francis,2006.
[8] 趙恆凱、萬旺根、陸健青、顧傑、茵志驊，”基於ARM的車上GPS智慧導航系統” The 5th Conference on Communication Applications (2007)
[9] Pao-Tzu Wu, The implementation of TMS320DSC25 Embedded System with JPEG2000,NCKU,2005
[10] 季昱,林俊超,宋飛. ARM嵌入式-應用系統開發典型實例. 北京:中國電力出版社. 2005

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