AN2676 Freescale Semiconductor / Motorola, AN2676 Datasheet - Page 7

• Manufacturer Part Number: AN2676
• Description: Image Capture with i.MX21
• Manufacturer: Freescale Semiconductor / Motorola

Another choice for VGA can be LVRM = 1, and HSC = VSC = 24, and so on.
Table 4 shows suggested settings for different image sizes.
All statistics data are 16-bit wide and packed into a 32-bit STAT FIFO for temporal storage. Software can
read this out using CPU cycles or DMA. Because the amount of statistical data is very small, DMA will
not provide significantly better performance.
MOTOROLA
1536 x 1024
1280 x 1024
Image Size
1024 x 768
1280 x 960
352 x 288
640 x 480
64
VSC = 16
480
64
Aspect Ratio
Table 4. Suggested Maximum Resolution Settings
11 : 9
4 : 3
4 : 3
3 : 2
5 : 4
HSC = 16
4: 3
Freescale Semiconductor, Inc.
Figure 5. Maximum Resolution Supported
For More Information On This Product,
MC9328MX21 Application Note
Go to: www.freescale.com
LVRM
4
0
3
0
0
640
Block Size
40 x 40
64 x 64
64 x 64
64 x 64
64 x 64
Not Supported
HSC / VSC
192 / 192
16 / 16
64 / 64
96 / 96
4 / 8
Bayer Statistics
CR2 Value
0x83BFBF
0x800F0F
0x803F3F
0x805F5F
0x840703
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