Analog Devices Advantiv ADV7604 Hardware Manual page 182

UP_CONVERSION_MODE, HDMI Map, Address 0x1D, [5]
This control selects the linear or interpolated 4:2:2 to 4:4:4 conversion performed in the HDMI
section.
Function
UP_CONVERSION
_MODE
0
1
Notes:
• When the ADV7604 pixel output format is set to 4:2:2 (refer to Section 5.2), the DPP section
down converts the 4:4:4 stream from the HDMI section according to
DS_WITHOUT_FILTER:
For 4:4:4 HDMI input stream to the ADV7604, the DPP section filters and downsamples
the video data from 4:4:4 to 4:2:2 format if
The DPP section only downsamples, without filtering, the video data from the HDMI
section if
For 4:2:2 HDMI input stream, the functionality of
This inversion ensures that for a 4:2:2 HDMI input stream no filtering will be applied if
DS_WITHOUT_FILTER is left to its default value 0.
When a 4:2:2 HDMI input stream is input to the ADV7604, the DPP section
downsamples, without filtering, the video data from 4:4:4 to 4:2:2 format if
DS_WITHOUT_FILTER
If DS_WITHOUT_FILTER
from 4:4:4 to 4:2:2 format.
• Passing through of the video data from a 4:2:2 HDMI stream from the HDMI section out
through the pixel output formatter without filtering or alteration can be achieved with the
following settings:
Set UP_CONVERSION_MODE
Set DS_WITHOUT_FILTER
Configure the pixel output formatter to output a 4:2:2 stream (refer to Section 5.2)
• Passing through of the video data from a 4:4:4 HDMI stream from the HDMI section out
through the pixel output formatter without filtering or alteration can be achieved with the
following settings (refer to
Set UP_CONVERSION_MODE
Set DS_WITHOUT_FILTER
Configure the pixel output formatter to output a 4:4:4 stream (refer to Section 5.2)
Rev. F August 2010
Description
Repeats Cr/Cb values. 4:2:2 incoming stream is upconverted to 4:4:4
stream before being sent to DPP section. Cr and Cb samples are repeated
in their respective channel.
Interpolates Cr/Cb values using a first order filter. 4:2:2 incoming stream
is upconverted to 4:4:4 stream before being sent to the DPP section.
DS_WITHOUT_FILTER
is set to 0.
is set to 1, the DPP filters and downsamples the video data
to 0
Figure 50):
to 0 or to 1
DS_WITHOUT_FILTER
is set to 1.
DS_WITHOUT_FILTER
to 0 or 1
to 0 or to 1
182
ADV7604
is set to 0.
is reversed.