MT9T001P12STC Datasheet, PDF (29/41 Pages) Micron Technology – 1/2-Inch 3-Megapixel CMOS Digital Image Sensor

MT9T001 - 1/2-Inch 3-Megapixel Digital Image Sensor
Feature Description
effectively reduces the horizontal and vertical resolution by 2x for a factor of 4x reduc-
tion in overall number of pixels that are read out. To perform this read out mode, the
user would need to set the following:
Reg0x03 =
0x05FF
Reg0x04 =
0x07FF
Reg0x23
Bit[2:0]=1
Reg0x22 Bit[2:0]
=1
1,536V rows
2,048H columns
Column skip 2x—> 1,024H
columns read out
Row skip 2x —> 768
rows read out
If the user sets Reg0x03 = 0x02FF (768V rows), Reg0x04 = 0x03FF (1,024H columns), and
then enable column skip 2x and row skip 2x, the effective readout resolution is 512H x
384V.
Line_Valid Formats
Reg0x20 is used to control many aspects of the readout of the sensor. By setting Bit 9 and
10 of Reg0x20 the LINE_VALID signal can get three different output formats. The for-
mats are shown in Figure 17 when reading out four rows and two vertical blanking rows.
In the last format the LINE_VALID signal is the XOR between the continuously
LINE_VALID signal and the FRAME_VALID signal.
Figure 17: Different LINE_VALID Formats
Default
FRAME_VALID
LINE_VALID
Continuously
FRAME_VALID
LINE_VALID
XOR
FRAME_VALID
LINE_VALID
81004bad/80ffb422
MT9T001_3100_DS_2.fm - Rev. D 7/05 EN
29
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