MT9V012 Micron, MT9V012 Datasheet - Page 34

• Manufacturer Part Number: MT9V012
• Description: 1/6-Inch VGA CMOS Digital Image Sensor
• Manufacturer: Micron

Figure 18: Eight Pixels in Normal and Column Skip 2X Readout Modes
Figure 19: Sixteen Pixels in Normal and Column Skip 4X Readout Modes
Digital Zoom
Figure 20: Eight Pixels in Normal and Zoom 2X Readout Modes
PDF: 814eb99f/Source: 8175e929
MT9V012_2.fm - Rev. B 2/05 EN
Column Skip Readout
Column Skip Readout
Zoom 2x Readout
Normal Readout
Normal Readout
Normal Readout
D
D
OUT
OUT
D
D
LINE_VALID
LINE_VALID
D
D
OUT
OUT
LINE_VALID
LINE_VALID
OUT
OUT
Reg0x20[7:6] allows a digital zoom of 2x or 4x to be applied. In zoom mode, the pixel data
rate is slowed by a factor of either two or four, and either one or three additional blank
rows are added between output rows. This is designed to give the controller logic time to
repeat data to fill in a window that is either two or four times larger with repeated data.
The pixel clock speed is not affected by this operation, and therefore the output data for
each pixel is valid for either two or four pixel clocks. In 2x zoom mode, every row is fol-
lowed by a blank row (with its own LINE_VALID, but all data bits = 0) of equal time. In 4s
zoom mode, every row is followed by three blank rows. In the zoom modes, Reg0x03 and
Reg0x04 will still specify the window size out of the sensor including the extra blanking,
so the active image read out will, in effect, be half or one-quarter of the output image.
LINE_VALID
LINE_VALID
9–D
9–D
9–D
9–D
9–D
9–D
OUT
OUT
OUT
OUT
OUT
OUT
0
0
0
0
0
0
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0] R2 [9:0] G3 [9:0] R3 [9:0]
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0] R2 [9:0] G3 [9:0] R3 [9:0]
G0 [9:0] R0 [9:0] G2 [9:0] R2 [9:0]
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0]
G0 [9:0] R0 [9:0] G4 [9:0] R4 [9:0]
MT9V012 - 1/6-Inch VGA CMOS Digital Image Sensor
G0 [9:0]
34
R2 [9:0]
Micron Technology, Inc., reserves the right to change products or specifications without notice.
G1 [9:0]
G7 [9:0] R7 [9:0]
©2004 Micron Technology, Inc. All rights reserved.
Feature Description
R1 [9:0]
Preliminary
‡