LFE2M50E-PS-EVN Lattice, LFE2M50E-PS-EVN Datasheet - Page 62

• Manufacturer Part Number: LFE2M50E-PS-EVN
• Description: Programmable Logic IC Development Tools LatticeECP2M PCI Express Dev Kit
• Manufacturer: Lattice

Specifications of LFE2M50E-PS-EVN

• Rohs: yes
• Tool Is For Evaluation Of: LatticeECP2M-50
• Factory Pack Quantity: 1

Running the PCI Express DMA Demos
PCIe DMA ImageMove Demo
LatticeECP2M PCI Express Development Kit User’s Guide
Figure 18: ImageMove Program Operation Flow
This file demonstrates the Lattice PCIe IP core and the SGDMA IP core
operating on a PCIe solutions board. It transfers image data from the PC to
the solutions board and then back to the software, which then displays a
modified image on the screen.
The image is displayed using OpenGL calls. The display rate is therefore also
dependent on the OpenGL library and graphics subsystem hardware.
Displaying an image is a quick way to illustrate that data has been moved. An
image provides a quick, visual way to observe a large transfer of data. Each
image is 256KB in size.
Below is the sequence of events as this demo image undergoes processing:
1. The image source is generated by rotating the triangle shape using
2. The source image is read from the screen into the source buffer.
3. The source buffer is sent to the Image Filter memory on the solutions
4. After a 64KB chunk is transfered to the board, the 64KB chunk is read
OpenGL transform matrix. The resulting image is displayed on the screen.
board. The memory is only 64KB in size, so the the image is sent in four
chunks.
back, with the pixels modified by the XOR function in the read path.
PCIe DMA ImageMove Demo
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