StickIt! VGA V1.0 User Manual
Contents
1. INCLUDING ANY LOST DATA AND LOST PROFITS ARISING FROM OR RELATING TO YOUR USE OF THE DESIGN EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES THE TOTAL CUMULATIVE LIABILITY OF XESS IN CONNECTION WITH YOUR USE OF THE DESIGN WHETHER IN CONTRACT OR TORT OR OTHERWISE WILL IN NO EVENT EXCEED THE AMOUNT OF FEES PAID BY YOU TO XESS HEREUNDER FOR USE OF THE DESIGN YOU ACKNOWLEDGE THAT THE FEES IF ANY REFLECT THE ALLOCATION OF RISK SET FORTH IN THIS AGREEMENT AND THAT XESS WOULD NOT MAKE AVAILABLE THE DESIGN TO YOU WITHOUT THESE LIMITATIONS OF LIABILITY The Design is not designed or intended for use in the development of on line control equipment in hazardous environments requiring fail safe controls such as in the operation of nuclear facilities aircraft navigation or communications systems air traffic control life support or weapons systems High Risk Applications XESS specifically disclaims any express or implied warranties of fitness for such High Risk Applications You represent that use of the Design in such High Risk Applications is fully at your risk O 2012 XESS Inc XESS the XESS logo and other designated brands included herein are trademarks of XESS Corporation PMOD is a trademark of Digilent Inc All other trademarks are the property of their respective owners This document is licensed under the Attribution ShareAlike 3 0 Unported license available at http creativecommons org licenses by sa 3 0 MANO2. Interval Interval Front Porch Back Porch Horizontal d Sync O 25 17 us q 26 11 us A 29 88 us q 31 77 us Vertical Vertical Video Blanking Blanking Frame Interval Interval Front Porch Back Porch Vertical gt Sync q 15 25 ms q 15 70 ms q 15 764 ms q 16 784 ms StickIt VGA V1 0 User Manual WWW Xess com 6 MANOO6 V1 0 Feb 9 2012 A ESS Using the Module To use the StickIt VGA module you will need to do the following Create a Xilinx ISE FPGA project and write some HDL code for translating image data into RGB values along with horizontal and vertical syncs Attach the module to either a PMOD or Wing socket on the StickIt board Determine the channel signals on the PMOD or Wing socket that connect to each I O pin of the module Find which FPGA pin of the XuLA board connects to each channel signal Make a UCF file associating each FPGA pin with an I O pin of the module Include the UCF file in your ISE project That s a lot of work just to display an image so we ve done most of it for you Just go to http github com xesscorp StickIt There you will find a subdirectory with a Xilinx ISE project that includes an HDL file containing two related modules one for displaying bitmapped graphics and another for displaying text based graphics an example that uses the bitmapped VGA module to display an image on a VGA monitor and a UCF file containing the FPGA pin ass
3. maximum brightness control the intensity of each color component which combine to make the final color of a pixel on the monitor screen Each analog color input can be set to one of 32 levels by five digital outputs using a simple five bit digital to analog converter DAC consisting of a resistor network combined with the 75Q input resistance of the monitor input The 32 possible levels on each analog input are combined by the monitor to create a pixel with one of 32 x 32 x 32 32768 different colors So the fifteen digital control lines let you select from a palette of 32768 colors Note that I O limitations of the StickIt Board and modules reduce the maximum color depth to 14 bits Digital Inputs 0 3 3V R3 R2 R1 RO B4 B3 B2 B1 BO DAC 00028 00028 00028 VGA Monitor 0 0 7V Generating Sync Signals An image or frame on a monitor screen is composed of h lines each containing w pixels VGA frame size is expressed as w x h with typical sizes of 640 x 480 800 x 600 1024 x 768 and 1280 x 1024 In order to send a frame of pixels to the monitor two sync signals are required a horizontal sync to indicate the start and stop of each line of pixels going from left to right on the screen and a vertical sync that marks the top and bottom lines so they stack up StickIt VGA V1 0 User Manual WWW Xess com 5 MANOO6 V1 0 Feb 9 2012 A ESS Operation to form an image The StickIt VGA module has two digita
4. 4 ESS Corporation Sticklt VGA V1 0 User Manual How to install and use your new Sticklt VGA Module MANO06 V1 0 Feb 9 2012 A ESS Principles of VGA Video XESS is disclosing this Document and Intellectual Property hereinafter the Design to you for use in the development of designs to operate on or interface with XESS hardware devices XESS expressly disclaims any liability arising out of the application or use of the Design XESS reserves the right to make changes at any time to the Design as deemed desirable in the sole discretion of XESS XESS assumes no obligation to correct any errors contained herein or to advise you of any correction if such be made XESS will not assume any liability for the accuracy or correctness of any engineering or technical support or assistance provided to you in connection with the Design THE DESIGN IS PROVIDED AS IS WITH ALL FAULTS AND THE ENTIRE RISK AS TO ITS FUNCTION AND IMPLEMENTATION IS WITH YOU YOU ACKNOWLEDGE AND AGREE THAT YOU HAVE NOT RELIED ON ANY ORAL OR WRITTEN INFORMATION OR ADVICE WHETHER GIVEN BY XESS OR ITS AGENTS OR EMPLOYEES XESS MAKES NO OTHER WARRANTIES WHETHER EXPRESS IMPLIED OR STATUTORY REGARDING THE DESIGN INCLUDING ANY WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE TITLE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS IN NO EVENT WILL XESS BE LIABLE FOR ANY CONSEQUENTIAL INDIRECT EXEMPLARY SPECIAL OR INCIDENTAL DAMAGES
5. O6 V1 0 Feb 9 2012 www xess com StickIt VGA V1 0 User Manual Principles of VGA Video StickIt VGA V1 0 User Manual MANO06 V1 0 February 9 2012 The following table shows the revision history for this document Date Version Revision 02 09 12 1 0 Initial release for StickIt VGA module V1 0 MANOO6 V1 0 Feb 9 2012 www xess com StickIt VGA V1 0 User Manual A ESS Principles of VGA Video Table of Contents CEL Preliminar ieS scanna aaa a a ernennen dene 1 EE Ee 1 TIRE Le ug Te EE 1 ca PP Ao en 1 C2 SOU Ds iia a 2 Inserting Your StickIt VGA Module Into Your StickIt Boarg nenn nennen nenn 2 ae ed lu e Mtoa PMOD SO EEN 2 Inserting Into a Wing SOCKEL een ee 3 C 3 Operatoren 5 Generating Analog Color SIMA EE 5 Genera Ind SYNE SIONA ernennt ensure 5 C 4 USING the Moduli suacnsnnn nn na a aia dan 7 Wa A o aaa 8 A 2 Schema Le 10 MANOO6 V1 0 Feb 9 2012 www xess com StickIt VGA V1 0 User Manual A ESS Preliminaries Here s some helpful information before getting started Getting Help Here are some places to get help if you encounter problems m If you can t get the StickIt VGA module to work send an e mail message describing your problem to help xess com or submit a problem report at http www xess com help php m Our web site also has e answers to frequently asked questions e example designs application notes and tutorials e aforum w
6. here you can post questions Take Notice It s pretty hard to get in trouble with this module Packing List Here is what you should have received in your package m a StickIt VGA module m PMOD male header x 2 m Wing male headers 8 pin x 2 amp 4 pin x 2 StickIt VGA V1 0 User Manual WWW Xess com MANOO6 V1 0 Feb 9 2012 A ESS Setup The StickIt VGA module connects to one or two PMOD or Wing sockets on your Sticklt Board and can display color images with up to 14 bits of color depth on a VGA monitor Inserting Your Sticklt VGA Module Into Your Sticklt Board Inserting Into aPMOD Socket To use the StickIt VGA module with a PMOD socket first solder the included male PMOD headers to the module as shown If you only need six bits of color depth then install just a single header in the STK1 slot and leave STK2 empty Installing both headers increases the color depth to 10 bits but also requires you to use two PMOD sockets To insure a stable connection only use a header with 0 25 square pins StickIt VGA V1 0 User Manual WWW Xess com 2 MANOO6 V1 0 Feb 9 2012 Setup A ESS Next insert the module into one of the PMOD sockets on the StickIt Board The figure below shows the StickIt VGA plugged into a single PMOD socket where it can generate six bit color images Plugging the module into two adjacent sockets increases the color depth to ten bits but consumes more I O pins This mod
7. ignments to use when installing the StickIt VGA module into any of the PMOD or Wing sockets StickIt VGA V1 0 User Manual WWW Xess com 7 MANOO6 V1 0 Feb 9 2012 A ESS A1 VO Locations The connections of the I O signals to the PMOD and Wing headers of the StickIt VGA module are shown below USYNC HSYNCH HS DC USYNCH eo OH H er O d 30 8 amp 0 54 0 0 O R3 0 0 0 63 amp B3 OR2 062 R20 0 OB 6200 OR B20 0 0 El 6100 O Bt 0 0 g Ga 0 0 amp Ba Please note the following 1 The top PMOD header STK1 contains the two most significant bits of the red green and blue color signals along with the horizontal and vertical sync signals This means you can generate images with up to 2 64 colors using only a single PMOD socket 2 The bottom PMOD header STK2 provides an additional four bits of color depth two StickIt VGA V1 0 User Manual WWW Xess com 8 MANOO6 V1 0 Feb 9 2012 I O Locations A ESS more bits of green to which the human eye is most sensitive and one additional bit of red and blue Because there is an overlap of four I O pins between adjacent PMOD sockets on the StickIt Board four of the I O pins on the lower PMOD header have been left unconnected to prevent interference So using two PMOD sockets means you can generate images with up to 2 1024 colors The top Wing header contains the same signals as the top PMOD header so using a single Wing
8. l outputs that send these sync signals to the monitor The timing for the sync signals is shown in below Negative pulses on the horizontal sync signal mark the start and end of a line and ensure that the monitor displays the pixels between the left and right edges of the visible screen area The pixels are sent on the RGB signal lines within a 25 17 us window After this a front porch interval of 0 94 us is inserted before the horizontal sync signal goes low for 3 77 us After a back porch interval of 1 89 us the next line of pixels begins Therefore a single line of pixels occupies 25 17 us of a 31 77 us interval The red green and blue signals are blanked during the 6 6 us interval comprised of the front porch sync pulse and back porch In a similar fashion negative pulses on the vertical sync signal mark the start and end of a frame of video lines and ensure that the monitor displays the lines between the top and bottom edges of the visible monitor screen The lines are displayed within a 15 25 ms window After this a front porch interval of 0 45 ms is inserted before the vertical sync signal goes low for 64 us After a back porch interval of 1 02 ms the next frame begins Therefore a single frame of pixels occupies 15 25 ms of a 16 784 ms interval The RGB signals are blanked during the 1 534 ms interval comprised of the front porch sync pulse and back porch Pixel RGB Levels Video e Horizontal Horizontal Line Blanking Blanking
9. socket provides the same capability for generating 64 color images The bottom Wing header provides an additional eight bits of color depth three more bits of green and blue and two additional bits of red So using two Wing sockets means you can generate images with up to 2 16 384 colors StickIt VGA V1 0 User Manual WWW Xess com MANOO6 V1 0 Feb 9 2012 A ESS Schematic HSYNC USYNC STK1PMOD STKLWING HSYNCH USYNC HSYNC R4 G4 USYNC B4 R3 R4 4 63 B3 G4 GND GND B4 4 OUNT HOLE3 0 R3 P 63 A 2 B3 5 OUNT HOLE3 8 R2 62 B2 R1 G1 B1 GO Ba 2 11 XESS Corp Some rights reserved SA BY Licensed under a Creative Commons UGA Monitor Interface Attribution Share Alike Unported License e nz PROJECT StickIt Uga DEU 1 0 Dez 11 3 2011 9 14 16 DM Stickte AUTHOR Dave Vandenbout XESS Corp Sheet 1 1 StickIt VGA V1 0 User Manual WWW Xess com 10 MANOO6 V1 0 Feb 9 2012 Schematic StickIt VGA V1 0 User Manual WWW XESS COM 11 MANOO6 V1 0 Feb 9 2012
10. ule does not directly connect to any power supply so there is no need to change the setting of the voltage selection jumper of the PMOD socket Inserting Into a Wing Socket To use the StickIt VGA module with a Wing socket first solder the included Wing headers to the module as shown If you only need six bits of color depth then install just a single header in the STK1 slot and leave STK2 empty Installing both headers increases the color depth to 14 bits but also requires you to use two Wing sockets To insure a stable connection only use a header with 0 25 square pins StickIt VGA V1 0 User Manual WWW Xess com 3 MANOO6 V1 0 Feb 9 2012 A ESS Setup Next insert the module into the Wing sockets on the StickIt Board The figure below shows the StickIt VGA plugged into two adjacent Wing sockets where it can generate 14 bit color images Plugging only the STK1 header of the module into a single Wing socket decreases the color depth to six bits but frees I O pins for other uses StickIt VGA V1 0 User Manual www xess com MANOO6 V1 0 Feb 9 2012 A ESS Operation This chapter describes the operation of the StickIt VGA module using a simplified schematic You can find a complete schematic at the end of this manual Generating Analog Color Signals There are three signals red green and blue RGB that send color information to a VGA monitor Signal levels between O completely dark and 0 7 V
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