Related Manuals for BeagleBone LCD7 Cape
Summary of Contents for BeagleBone LCD7 Cape
- Page 1 BeagleBone LCD7 Cape System Reference Manual Revision A3 BeagleBone LCD7 Cape Rev A3 System Reference Manual Revision A3 September 1st, 2012 Page 1 of 27...
- Page 2 For any questions, concerns, or issues submit them to support@beagleboardtoys.com BEAGLEBONE LCD7 CAPE DESIGN These design materials referred to in this document are *NOT SUPPORTED* and DO NOT constitute a reference design. Only “community” support is allowed via resources at Beagleboardtoys.com/support...
- Page 3 BeagleBone LCD7 Cape System Reference Manual Revision A3 FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK QUALITY PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU. SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE, YOU ASSUME THE COST OF NECESSARY SERVICING, REPAIR CORRECTION.
- Page 4 BeagleBone LCD7 Cape System Reference Manual Revision A3 BeagleBoardToys provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by BeagleBoardtoys.com to be a finished end- product fit for general consumer use.
- Page 5 System Reference Manual Revision A3 WARRANTY: The BeagleBone LCD7 Cape is warranted against defects in materials and workmanship for a period of 90 days from purchase. This warranty does not cover any problems occurring as a result of improper use, modifications, exposure to water, excessive voltages, abuse, or accidents.
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Page 6: Table Of Contents
Revision A3 Table of Contents FIGURES ..............................7 TABLES ................................ 7 INTRODUCTION..........................9 CHANGE HISTORY .........................10 ..........................10 HANGE ISTORY . A2 ............................10 BEAGLEBONE LCD7 CAPE OVERVIEW ...................11 ..........................11 ESCRIPTIONS .............................12 ...........................13 ETTING TARTED ............................13 EPAIRS FEATURES AND SPECIFICATIONS ....................14 ......................15... -
Page 7: Figures
Key Components on top side ................ 15 Figure 4. Key Components on bottom side ..............16 Figure 5. BeagleBone LCD7 Cape High Level Block Diagram ........19 Figure 5. LCD Signals at expansion connector J1 ............20 Figure 6. LCD Signals buffered through U1 ..............21 Figure 7. - Page 8 BeagleBone LCD7 Cape System Reference Manual Revision A3 NOTES Page 8 of 27...
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Page 9: Introduction
System Reference Manual Revision A3 Introduction This document is the System Reference Manual for the BeagleBone LCD7 Cape, an add- on board for the BeagleBone. This document is intended as a guide to assist anyone purchasing or who are considering purchasing the board to understand the overall design and usage of the BeagleBone LCD7 Cape from the system level perspective. -
Page 10: Change History
J2 to pin 20 of connector J1. In revision A1, LCD_AVDD_EN signal is mapped to GPIO0_7 which is also a DMA interrupt. By moving LCD_AVDD_EN signal, this DMA interrupt is now available when BeagleBone is used with LCD7 Cape. Both revisions should not have any functional difference. -
Page 11: Beaglebone Lcd7 Cape Overview
The BeagleBone LCD7 cape provides an LCD solution with touchscreen capability for BeagleBone boards. The 7" TFT LCD screen, attached to the topside of the board, can display up to a resolution of 800x480 and is a 4-wire resistive touchscreen. The board is equipped with seven buttons located at finger-friendly positions. -
Page 12: In The Box
BeagleBone LCD7 Cape System Reference Manual Revision A3 In The Box The final packaged BeagleBone LCD7 Cape Rev A2 product will contain the following items: 1 BeagleBone LCD7 Cape with standoffs Figure 2. BeagleBone LCD7 Cape Box Contents Page 12 of 27... -
Page 13: Getting Started
2. Make sure the SD card using with BeagleBone has Angstrom image 06_18_12 or later. 3. Plug in a 5V DC power supply to the DC connector on the LCD7 Cape. 4. Following screens will be displayed on the LCD screen: •... -
Page 14: Features And Specifications
Revision A3 Features and Specifications This section covers the specifications of the BeagleBone LCD7 Cape and provides a high level description of the major components and interfaces that make up the board. Table 2 provides a list of the BeagleBone LCD7 Cape’s features. -
Page 15: Key Component Locations
BeagleBone LCD7 Cape System Reference Manual Revision A3 Key Component Locations Figure 3 below shows the top side locations of key components on the PCB layout of the BeagleBone LCD7 Cape: Figure 3. Key Components on top side Page 15 of 27... -
Page 16: Lcd Panel
BeagleBone LCD7 Cape System Reference Manual Revision A3 Figure 4 below shows key components on the back side of the board: Figure 4. Key Components on bottom side LCD Panel The LCD Panel is supplied by ThreeFive. The Model number is TFC- S9700RTWV35TR-01. -
Page 17: Indicators
There are two sets of connectors located on the bottom side of the board. One set is male and is used for BeagleBone, whereas the other, which is female, is used to mount an additional cape. Each set is composed of two 46-position connectors and one 10-position connector. -
Page 18: Mechanical Specifications
Size: 4.50” x 6.90” Layers: PCB thickness: .062” RoHS Compliant: Weight: Electrical Specifications Table 3 is the electrical specification of the external interfaces to the BeagleBone LCD7 panel. Table 3. BeagleBone LCD7 Electrical Specifications Specification Unit Power Input Voltage DC... -
Page 19: System Architecture And Design
System Reference Manual Revision A3 System Architecture and Design This section provides a high level description of the design of the BeagleBone LCD7 Cape and its overall architecture. System Block Diagram Figure 7 is the high level block diagram of the BeagleBone LCD7 Cape. -
Page 20: Lcd Interface
5.2.1 Expansion connectors The LCD interface of the BeagleBone LCD7 Cape uses 16 data and 4 control signals from the BeagleBone’s expansion connectors. By using only 16 signals for LCD_DATA, more pins can be available at the expansion header for other capes. The quality of 16-bit LCD output, nonetheless, is very similar to 24-bit. -
Page 21: Touchscreen Interface
BeagleBone LCD7 Cape System Reference Manual Revision A3 to A before going to LCD connector P2. Figure 6 shows the LCD signals are buffered through U1. Figure 6. LCD Signals buffered through U1 5.2.3 Touchscreen Interface The TFC-S9700RTWV35TR-01 touchscreen is resistive and composed of 4 different X or Y signals. -
Page 22: Power Management
Figure 7 shows TPS65105 in the system. Figure 7. BeagleBone LCD7 Power Management IC The main boost converter of TPS65105 operates with a fixed frequency of 1.6MHz and provides the AVDD_10V power rail for the LCD interface. This output is also fed to SUP... -
Page 23: Backlight Power Supply
This linear regulator controller is independent from the system since it has its own enable input. In the BeagleBone LCD7 Cape, this enable pin is connected to the VDD_3V3 power rail to make sure the controller is always active. An external npn transistor is used, and its base is driven by the Base output from the PMIC. -
Page 24: Eeprom
EEPROMs are required for all Capes sold in order for them to operate correctly when plugged in the BeagleBone. The EEPROM used on this cape is the same one as is used on the BeagleBone, a CAT24C256. The CAT24C256 is a 256 kb Serial CMOS EEPROM, internally organized as 32,768 words of 8 bits each. -
Page 25: Eeprom Address
BeagleBone LCD7 Cape System Reference Manual Revision A3 Figure 9. BeagleBone LCD7 Cape EEPROM 5.4.1 EEPROM Address In order for each Cape to have a unique address, a board ID scheme is used that sets the address to be different depending on the order in which it is stacked onto the main board. -
Page 26: Mechanical Information
System Reference Manual Revision A3 Mechanical Information This section provides information on the mechanical aspect of the BeagleBone LCD7 Cape. Figure 14 is the dimensions of the BeagleBone LCD7 Cape. Figure 10. BeagleBone LCD7 Cape Dimensions Drawing Page 26 of 27... -
Page 27: Design Materials
BeagleBone LCD7 Cape System Reference Manual Revision A3 Design Materials Design information can be found at BeagleBoardToys wiki: http://beagleboardtoys.com/wiki/index.php?title=BeagleBone_LCD7 Provided there is: Schematic in PDF Schematic in OrCAD Manufacturing files o PCB Gerber o PCB Layout (Allegro) Bill of Materials...
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