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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

frame reader configuration and initialization

I use the frame reader in my design with the following settings:

Bits per pixel per color plane: 8

Number of color planes in parallel: 3

Number of color planes in sequence: 1

Maximum Image width: 1920

Maximum Image height: 1080

Master port width: 64

Read master FIFO depth: 1024

Read master FIFO burst target: 64

Use separate clock for the Avalon MM master interface: unchecked

Kindly confirm if the following calculations for number the words and the Single Cycle Color Patterns are true or not

1- // Words

IOWR(FRAMEREADER_BASE, 5, 259200); // (1920*1080*8*3)/48= 1036800

2- // Single Cycle Color Patterns

IOWR(FRAMEREADER_BASE, 6, 2073600); // 1920*1080=2073600 number of pixels in the frame multiplied by the number of single cycles required to represent one pixel

Your reply will be highly appreciated

2 Replies

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

    The frame reader will only transfer whole "single cycle color patterns" (pixels). With a 64-bit master port width and 24-bit pixels, the Frame Reader will only be transferring 48 bits (not 64 bits) of picture data at a time.