Table of Contents
Advertisement
Quick Links
J822
Development Kit
Hardware User Guide
Introduction
Thank you for purchasing the J822 Development Kit from Avago Technologies. The J822 Kit is a simple
development board, which demonstrates the capabilities of the 24-pin HDJD-J822 color management
controller device.
The development kit can be used stand-alone with a programmed system controller on-board, connect to
another controller system (using I
Sample programs are provided to demonstrate the unique features of the device.
The J822 Development Kit comes with the following:
•
J822 Development Board (Figure 1-1)
•
Sample Device
•
CD-ROM, which contains:
- J822 Development Kit Hardware User Guide
- Development Kit Backlight System Design Guide
- ICM Program User Guide
- Sample System Controller Program Guide
- Application Notes
- Datasheets
- Sample System Controller Program Codes
If you are missing any part of the kit, please contact your nearest Avago Technologies sales office listed in
the back of this publication for help.
2
C interface) or connect direct to an IBM-PC computer (using parallel port).
Advertisement
Table of Contents
Related Manuals for Avago J822
Summary of Contents for Avago J822
- Page 1 - Sample System Controller Program Guide - Application Notes - Datasheets - Sample System Controller Program Codes If you are missing any part of the kit, please contact your nearest Avago Technologies sales office listed in the back of this publication for help.
- Page 2 8. 10-way DIP switch for setting various control pins of HDJD-J822 device 9. 6-way DIP switch for individual RGB gain control of the onboard color sensor 10. External I/O connector that port various control pins of HDJD-J822 device externally 11. PWM output connector that connects to external LED driver card 12.
-
Page 3: Sample Programs
PIC18F252 system controller can be found in the device’s respective data sheet. Chapter 1 : Introduction - This chapter introduces the J822 Development Kit and provides a brief description of the hardware. Chapter 2 : Hardware Description – This chapter decribes in detail the hardware of the J822 Development Board. - Page 4 Hardware Detail The J822 Development Kit hardware is extremely simple and is intended to illustrate the ease of use of the Color Management Controller. The development board features the following hardware elements: COLOR MANAGEMENT CONTROLLER AND SYSTEM CONTROLLER The board is incorporated with two processors, one is the HDJD-J822 color management controller and the other is the Microchip PIC18F252 system controller.
-
Page 5: Sensor Input
(except for PB3, which is pulled high +5V). SENSOR INPUT For J822 Development Board, it supports RGB color sensor input. A 3-pin header is provided for this purpose. Besides that, the development board also included a RGB color sensor module, located on top of the display panel, for feedback color management demonstration. -
Page 6: Oscillator Options
ADC INPUT LOW-PASS FILTER Since the LEDs are controlled by pulse width modulation output from the HDJD-J822, the sensor output will also be pulse width modulated. Each sensor channel needs to be averaged by passing the sensor output voltage through a low pass filter. On the board, this low pass filter is realized through a RC low- pass filter (R11/C5, R12/C7 and R13/C8). -
Page 7: Board Layout And Schematics
BOARD LAYOUT AND SCHEMATICS The following figures show the parts layout (silkscreen) and schematics for the J822 Development board. PWM R PWM G PWM B ERR_FLAG BRIGHT COLOR CLK_SEL SLEEP CLKREF VREF BLUE GREEN R3 R4 R5 R6 R7 R8 R9 R10... - Page 8 Figure 3. J822 Development Board Schematic...
- Page 9 For product information and a complete list of distributors, please go to our website: Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries. Data subject to change. Copyright © 2006 Avago Technologies Pte. All rights reserved.
Need help?
Do you have a question about the J822 and is the answer not in the manual?
Questions and answers