MT9D011 datasheet(39/61 Pages) MICRON

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MT9D011

2-MEGAPIXEL DIGITAL IMAGE SENSOR

PRELIMINARY

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Micron Technology, Inc., reserves the right to change products or specifications without notice.

MT9D011__MI2010_E_2.fm - Rev. A 11/04 EN

Figure 17: Thirty-two Pixels in Normal and Column Skip 8x Readout Modes

Figure 18: Sixty-four Pixels in Normal and Column Skip 16x Readout Modes

Digital Zoom

Reg0x20[13] enables a digital zoom of 2x to 16x to be

applied. The zoom value is set in Reg0x20[12:11]

according to Table 9.

In zoom mode, the pixel data rate is slowed by the

zoom factor, and a number of additional blank rows

are added between output rows (see Table 9). This is

designed to give the controller logic the necessary time

to repeat data, filling in a larger window with repeated

data.

The pixel clock speed is not affected by this opera-

tion, therefore the output data for each pixel is valid for

zoom factor number of pixel clocks. Every row is fol-

lowed by a number of blank rows (with their own

LINE_VALID, but all data bits = 0) of equal time.

In zoom modes, Reg0x03 and Reg0x04 still specifies

the window size out of the sensor including the extra

blanking, so the active image read out is, in effect,

smaller than the output image.

Figures 19 through 23 show the data coming from

the sensor in the different zoom modes. The colors

represent from which colored pixel the data comes.

Black represents data = 0.

DOUT9–DOUT0

LINE_VALID

Normal readout

(9:0)

G15

(9:0)

R15

(9:0)

DOUT9–DOUT0

LINE_VALID

Column skip readout

(9:0)

DOUT9–DOUT0

LINE_VALID

Normal readout

(9:0)

G31

(9:0)

R31

(9:0)

DOUT9–DOUT0

LINE_VALID

Column skip readout

(9:0)

G16

(9:0)

R16

(9:0)

Table 9:

Zoom Values

BIT VALUES

ZOOM VALUE

BLANK ROWS

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