STV0974 Datasheet, PDF (49/69 Pages) STMicroelectronics – Mobile Imaging DSP

Functional description
STV0974
4.9.3.2 Low-level interface
Scaler low-level control
These registers are active only if either “Still and Live Output Image Size” or “Viewfinder Image
Size” registers are set to “custom” size.
Table 34: Scaler low-level control
Name
Index R/W
Source centre X-
position MSB
0x8060 R/W
Source centre X-
position LSB
0x8061 R/W
Source centre Y-
0x8062
R
position MSB
Source centre Y-
0x8063
R
position LSB
Viewfinder Dest.
0x8064 R/W
Image Width MSB
Viewfinder Dest.
Image Width LSB
0x8065 R/W
Viewfinder Dest.
0x8066 R/W
image height MSB
Viewfinder Dest.
0x8067 R/W
image height LSB
Viewfinder Scaling 0x8068 R/W
factor
Still/Live Dest.
0x8069 R/W
Image Width MSB
Still/Live Dest.
Image Width LSB
0x806A R/W
Still/Live Dest.
0x806B R/W
image height MSB
Still/Live Dest.
0x806C R/W
image height LSB
State
code
A
A
A
A
A
A
A
A
A
A
A
A
A
Data
type
I
I
I
I
I
I
I
I
I
I
I
I
I
Format
default
Description
RRRR.RRDD
0000.0001
DDDD.DDDD
0100.0010
RRRR.RRDD
0000.0000
DDDD.DDDD
1111.0000
RRRR.RRDD
0000.0000
DDDD.DRRR
1010.0000
RRRR.RRDD
0000.0000
DDDD.DRRR
0111.1000
RRRR.RDDD
0000.0100
RRRR.RRDD
0000.0010
DDDD.D000
1000.0000
RRRR.RRDD
0000.0001
DDDD.D000
1110.0000
X-coordinates of the centre of the
source image window.
Default is 322
Y-coordinates of centre of the
source image window.
Default is 242
Width of the destination image
(after scaling) in viewfinder mode.
The value must be a multiple of 8
pixels.
Height of the destination image
(after scaling) in viewfinder mode.
This value must be a multiple of 8
pixels.
Scaling factor in viewfinder mode:
[0]: Reserved
[1]: x1
[2]: x2
[3]: x3
[4]: x4 (default)
[5]: x5
[6]: x6
[7]: x1.5
[8]: x2.5
Width of the destination image
(after scaling) in still / live mode.
This value must be a multiple of:
- 2 pixels in YUV output format
- 16 pixels in JPEG output format
Registers only used for Capture
when in idle mode
Height of the destination image
(after scaling) in still / live mode.
This value must be a multiple of 8
pixels.
Registers only used for Capture
when in idle mode
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