6.10.2.8
VInSTARTY - First line register
This register defines the first valid scanline of the first and second field to process.
An internal line counter counts all incoming lines and is reset with every VSYNC.
If this line counter equals STARTY[9:0], all following lines of the same field are
passed on for further processing.
Interlaced scan
In the case of interlaced video it is possible to use independent values for even
and odd field.
Progressive scan
In case of progressive video only STARTY2[9:0] defines the first line to capture,
whereas STARTY1[9:0] is disregarded.
Access
This register can be read/written in 32-bit units.
Address
<VIn_Base> + 0C
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
STARTY2[9:0]
R
R
R
R
R
R
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
STARTY1[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
25 to 16
STARTY2[9:0] First valid line of the second field to be processed
9 to 0
STARTY1[9:0] First valid line of the first field to be processed
Chapter 6
Video Input (Ravin-M only)
180
Preliminary User's Manual S19203EE1V3UM00
Содержание uPD72257
Страница 39: ...Pin Functions Chapter 2 Preliminary User s Manual S19203EE1V3UM00 39...
Страница 44: ...Chapter 2 Pin Functions 44 Preliminary User s Manual S19203EE1V3UM00...
Страница 46: ...Chapter 2 Pin Functions 46 Preliminary User s Manual S19203EE1V3UM00...
Страница 49: ...Pin Functions Chapter 2 Preliminary User s Manual S19203EE1V3UM00 49...
Страница 52: ...Chapter 2 Pin Functions 52 Preliminary User s Manual S19203EE1V3UM00...
Страница 54: ...Chapter 2 Pin Functions 54 Preliminary User s Manual S19203EE1V3UM00...
Страница 331: ...External Memory Interface Controller Chapter 9 Preliminary User s Manual S19203EE1V3UM00 331...
Страница 343: ......