pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 796
pnx1700
Manufacturer Part Number
pnx1700
Description
Connected Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700.pdf
(832 pages)
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Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
Figure 4:
31
31
32-Bit/Pixel Packed Formats
alpha
alpha
alpha
alpha
memory address A
left-most pixel
3.4 Packed YUV 4:2:2 Formats
24
24
32-bit formats are accepted and produced by all units except the MPEG-2 decoder.
Packed YUV 4:2:2 formats store two horizontally adjacent pixels into two 16-bit units.
Each pixel has an individual luminance (Y1 for the left of the pair, Y2 for the right of
the pair). There is a single U and V value associated with the pair. The U and V
values are taken from the same spatial position as the Y1 sample
There are two variants of packed YUV 4:2:2: the Microsoft ‘UYVY’ format and the
Microsoft ‘YUY2’ format. The big-endian view of the YUY2 format is identical to the
Power MacIntosh ‘2vuy’ format.
Figure 5
successive 16-bit units contain a pair of pixels. This view is independent of system
endian mode.
23
23
Figure 5:
left-most pixel pair, 1st unit
memory address A
and
R
V
R
R
UYVY Packed YUV 4:2:2 Format
Figure 6
memory address A+4
next pixel
Rev. 1 — 17 March 2006
16
16
show the software view of UYVY and YUY2/2vuy. Two
15
15
1st unit
2nd unit
left-most pixel pair, 2nd unit
memory address A+2
G
G
Y
G
15
31
. . . . . .
8
8
Y1
Y2
7
7
memory address A+4k
right-most pixel
. . . . . .
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
32-bit word
1 byte
Chapter 28: Pixel Formats
PNX17xx Series
B
U
8
24
right-most pixel pair, 2nd unit
7
23
memory address A+4k+2
(Figure
16-bit word
1 byte
0
0
YUVa 444
RGBa 8888
U
V
7).
UYVY
28-5
0
16
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