‡
Pre lim in a ry
MT9V012 - 1/6-In ch VGA CMOS Dig it a l Im a g e Se n so r
Fe a t u re De scrip t io n
Fig u re 18: Eig h t Pixe ls in No rm a l a n d Co lu m n Skip 2X Re a d o u t Mo d e s
LINE_VALID
Normal Readout
DOUT9–DOUT0
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0] R2 [9:0] G3 [9:0] R3 [9:0]
LINE_VALID
Column Skip Readout
DOUT9–DOUT0
G0 [9:0] R0 [9:0] G2 [9:0] R2 [9:0]
Fig u re 19: Sixt e e n Pixe ls in No rm a l a n d Co lu m n Skip 4X Re a d o u t Mo d e s
LINE_VALID
Normal Readout
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0]
G7 [9:0] R7 [9:0]
DOUT9–DOUT0
LINE_VALID
Column Skip Readout
DOUT9–DOUT0
G0 [9:0] R0 [9:0] G4 [9:0] R4 [9:0]
Dig it a l Zo o m
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.
Fig u re 20: Eig h t Pixe ls in No rm a l a n d Zo o m 2X Re a d o u t Mo d e s
LINE_VALID
Normal Readout
G0 [9:0] R0 [9:0] G1 [9:0] R1 [9:0] G2 [9:0] R2 [9:0] G3 [9:0] R3 [9:0]
DOUT9–DOUT0
LINE_VALID
Zoom 2x Readout
G0 [9:0]
R2 [9:0]
G1 [9:0]
R1 [9:0]
DOUT9–DOUT0
PDF: 814eb99f/Source: 8175e929
MT9V012_2.fm - Rev. B 2/05 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2004 Micron Technology, Inc. All rights reserved.
34
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