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Altera_Forum
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12 years ago

Onchip memory

altera cyclone ii dsp development board (ep2c70f672c6).We r doing image processing.

we have seen test pattern generation, which is available on this website.

It is working fine but we r unable to understood the procedure specially onchip memory.

It is shown that onchip memory could be increase from 4k to 20k.

Please explain how they have done this expt., without ddr2 RAM.

Tell us if it is possible to increase on chip memory and tell us if it is possible that we could use onchip memory for display of image without use of ddr2 sram.

so that we can import image from computer and display on vga monitor.

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    All the FPGA Families have different amounts of on-chip memory resources.

    with the 2C70, there are 250 m4k ram blocks or a total of 1,125 kbits of memory. However, your design will dictate how many of those bits are usable. So it's very possible to do multiple lines of buffering in an FPGA, but frame buffering usually is difficult without external rams, especially for higher resolutions.

    Pete