MCM20027IBBL View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MCM20027IBBL

Color SXGA Digital Image Sensor 1280 x 1024 pixel progressive scan solid state image sensor with integrated CDS/PGA/ADC, digital programming, control, timing, and pixel correction features

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Figure 7. CFRS Default Line Waveform

SYNC

SOF

VCLK

HCLK

T = (cintd + 1) * Row Time

ImageMOS

Standard Frame

Timing (Figure 18)

Figure 8. SFRS Waveform

4.0 Active Window of Interest Control

The pixel data to be read out of the device is defined as

a ‘Window of Interest’ (WOI). The window of interest

can be defined anywhere on the pixel array at any size.

The user provides the upper-left pixel location and the

size in both row and column depth to define the WOI.

The WOI is defined using the WOI Pointer, WOI Depth,

and WOI Width registers, (Table 34 on page 51 through

Table 41 on page 53). Please refer to Figure 9 for a pic-

torial representation of the WOI within the active pixel

array.

0

1295

0

ACTIVE PIXEL ARRAY

WOI Pointer (wcp,wrp)

Window of Interest (WOI)

5.0 Active Window Sub-sampling Control

The user can further control the size of the Active Win-

dow that is read out by sub sampling the already de-

fined Active Window Of Interest (See “Active Window of

Interest Control” on page 12). Subsampling enables the

pixel data to be readout in 1 pixel or 2 pixel increments

depending if you are subsampling in either mono-

chrome (1 pixel) or bayer pixel (2 pixel) space in four dif-

ferent sampling rates in each direction: full, 1/2, 1/4, or

1/8. The user controls the subsampling via the Sub-

sample Control Register, (Table 32), on page 49.

An example of Bayer space sub-sampling is shown in

Figure 10.

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Sub-sample Control Register =

Progressive Scan x0010101b =

Bayer Pattern

Read 1 Pattern, Skip 1 Pattern

in both directions

1047

WOI Column Width (wcw)

Figure 9. WOI Definition

Figure 10. Bayer Space Sub-sampling Example

MOTOROLA

Revision 8.4 - 24 Oct 2002 : MCM20027

12

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