Description

Why does the TREADY stall when using the TEST_PATTERN or BYPASS options available in some of the Video IP when the "Include Debug Features" option is enabled at generation?

Solution

There are two known issues that can affect both the ISE Design Suite and Vivado tool versions of the Video IP.

These issues will not be fixed in the ISE Design Suite versions of the Video IP.

This has been resolved in Vivado 2014.1 and later versions for the IP listed below:

• The BYPASS (CONTROL = 0x00000013) option does not work and can cause the TREADY to be pulled low until the IP is reset.
• The TEST_PATTERN (CONTROL = 0x00000023) can cause the TREADY to be pulled low when turning on and off the TEST_PATTERN.

The second problem can sometimes be worked around by turning on the BYPASS option (CONTROL = 0x00000013) before turning on the TEST_PATTERN (CONTROL = 0x00000023).

This problem affects the Video IP Listed below:

• LogiCORE IP Chroma Resampler v3.01.a (ISE), v4.0 (Vivado)
• LogiCORE IP Color Correction Matrix v5.01.a (ISE), v6.0 (Vivado)
• LogiCORE IP Color Filter Array Interpolation (CFA) v6.01.a (ISE), v7.0 (Vivado)
• LogiCORE IP Defective Pixel Correction v6.01.a (ISE), v7.0 (Vivado)
• LogiCORE IP Gamma Correction v6.01.a (ISE), v7.0 (Vivado)
• LogiCORE IP Image Edge Enhancement v6.00.a (ISE), v7.0 (Vivado)
• LogiCORE IP Image Noise Reduction v5.01.a (ISE), v6.0 (Vivado)
• LogiCORE IP RGB to YCrCb Color-Space Converter (RGB2YCrCb) v6.01.a (ISE), v7.0 (Vivado)
• LogiCORE IP YCrCb to RGB Color-Space Converter (YCrCb2RGB) v6.01.a (ISE), v7.0 (Vivado)

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