参数资料
型号: HW-V4SX35-VIDEO-SK-EC
厂商: Xilinx Inc
文件页数: 91/112页
文件大小: 0K
描述: VIRTEX-4 VIDEO STARTER KIT
产品变化通告: Development Systems Discontinuation 12/Jan/2009
标准包装: 1
系列: Virtex®-4
类型: DSP FPGA
适用于相关产品: Virtex?-4 SX
所含物品: 开发平台,子板,电源,闪存卡,CMOS 图像传感器和软件
R
Tutorial Files
includes a test pattern generator that generates a packed video stream and pack and
unpack functions. The packed format for VSK video streams is:
vid[32:0]=
{
pix_enable,
vsync_n,
hsync_n,
red[9:0],
green[9:0],
blue[9:0]
};
Pixel Enable
The video stream format includes a pix_enable signal that indicates the presence of an
active video pixel. The use of the pix_enable signal allows video streams with arbitrary
pixel clocks rates to be processed on a system with a greater but fixed frequency. For
instance, the RGB camera uses a 26.6 MHz pixel clock, but the processing clock is 100 MHz.
This means that roughly one in four clocks carry active pixels. The processing blocks can
use the pix_enable as a clock enable or take advantage of the higher processing rate by
using multiple clocks to process each pixel.
Tutorial Files
The vsk_vid_pcore_tutorial files can be found in the %VSK\Examples
SysgenTutorial\VSK_pcore_tutorial directory (%VSK refers to the directory
where the VSK CD is installed).
The following files and directories are used in the tutorial:
?
vid_go_start.mdl
// a starting model for the tutorial
?
?
?
?
?
vid_go_solution.mdl // the finished model
edk_vid_go_start // the starting EDK project directory
edk_vid_go_solution // the completed EDK project directory
viodc_wrapper_v11b.bit // the VIODC bit file
vsk_vid_gain_offset.c // the C driver software for gain offset
?
vsk_tutorial_top.c
// the top-level c-file for the tutorial
Building the Gain Offset Pcore in System Generator
The gain and offset peripheral is created using Xilinx System Generator toolkit and
MATLAB Simulink. After testing in System Generator, the design is exported as a pcore
and integrated into an existing EDK project. To create the gain and offset system, follow
these steps.
1.
2.
Open MATLAB.
Open the model vsk_vid_pcore_tutorial/vid_go_start.mdl . Save the
design as vid_go.mdl .
The model includes a test pattern generator which generates a packed video stream
with pack and unpack functions. The test pattern simulates a 100 pixel x 10 line video
frame, with R,G,B ramps in the horizontal direction.
Video Starter Kit
UG217 (v1.5) October 26, 2006
91
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