PNX1301 PHILIPS [NXP Semiconductors], PNX1301 Datasheet - Page 120
PNX1301
Manufacturer Part Number
PNX1301
Description
Media Processors
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.PNX1301.pdf
(548 pages)
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Figure 7-19. YUV 4:2:2 co-sited format.
Figure 7-20. YUV 4:2:2 interspersed format.
PNX1300/01/02/11 Data Book
Figure 7-21. YUV 4:2:0 format.
7.12.2
Video image data is stored in memory with one table for
each of the Y, U and V components. This is called planar
format. This is shown in
data. The EVO merges bytes from each of the three ta-
bles to generate the CCIR 656-compatible output data.
The U and V tables have the same number of lines but
half the number of pixels per line as the Y table. The
transfer is the same for YUV 4:2:0 format except the U
and V tables will be 1/4 the size of the Y table. The U and
V tables have the half the number of lines and half the
number of pixels per line as the Y table.
7.12.3
Graphics overlay image data is stored in a pixel-packed
format in SDRAM. Graphics images are stored in YUV
7-10
Planar Storage of Video Image Data in
Memory
Graphics Overlay Image Format
PRELIMINARY SPECIFICATION
Figure 7-22
for YUV 4:2:2 image
Chrominance (U,V)
samples
Chrominance (U,V)
samples
Chrominance (U,V)
samples
4:2:2+alpha format.
YUV overlay area is always within the image output res-
olution. The EVO does not upscale the graphics overlay
image. If the EVO is upscaling the video image by 2 , the
graphics overlay must be provided in upscaled format.
Pixel data is a 16-bit data and follows endian-ness con-
ventions based on 16-bit data. Refer to
dian-ness”
7.13
The memory video image data formats are converted to
the output YUV 4:2:2 co-sited format and optionally up-
scaled 2 horizontally. The conversion algorithms are
detailed below.
Luminance
Luminance
Luminance
samples
samples
samples
VIDEO IMAGE CONVERSION
ALGORITHMS
for details.
Figure 7-23
Philips Semiconductors
shows this format. The
Appendix C, “En-
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