6.10.2.7
VInSTARTX - First pixel register
This register defines the first valid pixel to process.
An internal pixel counter counts all incoming pixels. If this pixel counter equals
VInSTARTX, all following pixels of the same scanline are passed on for further
processing.
YUV(4:2:2)
In case of capturing YUV(4:2:2) Video Input data STARTX[9:0] must describe an
even number (STARTX0 = 0) in order to store the correct data order Y0:U:Y1:V in
the framebuffer.
RGB
In case of capturing RGB Video Input data STARTX[9:0] can describe even and
odd numbers.
Access
This register can be read/written in 32-bit units.
Address
<VIn_Base> + 08
H
Initial Value
0000 0000
H
. This register is initialized by any reset.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
STARTX[9:0]
R
R
R
R
R
R
R/W
Writing to the read-only bits is ignored, reading returns undefined values.
Bit
Bit name
Function
9 to 0
STARTX[9:0]
First valid pixel in a scanline to be processed.
Note:
In case of YUV(4:2:2) Video Input data format the lower address bit STARTX0 must be
set to 0 due to 2-pixel alignment.
Video Input (Ravin-M only)
Chapter 6
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