
1/4-INCH VGA CMOS ACTIVE-PIXEL
DIGITAL IMAGE SENSOR
Preliminary
09005aef80c6407f
MT9V011_external_DS_2.fm - Rev. A 8/04 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
19
2004 Micron Technology, Inc.
Read Mode
This register is used to control many aspects of the readout of the sensor.
0x20
0
Show bad frames:
1 = output all frames (including bad frames).
0 = only output good frames. A bad frame is defined as the first frame following a change to:
window size or position, horizontal blanking, pixel clock speed, zoom, row or column skip, or
mirroring.
3
Column skip:
1= read out two columns, and then skip two columns (as with rows).
0 = normal readout.
4
Row skip:
1 = read out two rows, and then skip two rows (i.e. row 8, row 9, row 12, row 13…).
0 = normal readout.
9
"Continuous" Line Valid (continue producing line valid during vertical blanking).
0 = Normal Line Valid (default, no line valid during vertical blanking).
10
Line valid = "Continuous" Line Valid XOR Frame Valid.
0 = Normal Line Valid. Ineffective if Continuous Line Valid is set.
11
The four dark rows 0 to 3 are read out in addition to the valid data.
0 = normal readout.
To preserve a right-reading image and the correct color order, all four of these bits should be set to “1” to
invert the image.
5
1 = readout starting 1 column later.
0 = normal readout.
7
1 = readout starting 1 row later.
0 = normal readout.
14
1 = read out from right to left (mirrored).
0 = normal readout.
15
1 = read out from bottom to top (upside down).
0 = normal readout.
Gain Settings
The gain can be individually controlled for each color in the Bayer pattern.
0x2B
Green1 Gain
—
default = 0x0020 (32) = 1x gain.
0-6
Initial Gain = bits (6:0) x 0.03125.
7, 8
Analog Gain = (Bit 8 + 1) x (Bit 7 + 1) x Initial Gain (each bit gives 2x gain).
9,10
9, 10: Total Gain = (Bit 9 + 1) x (Bit 10 + 1) x Analog Gain (each bit gives 2x gain).
0x2C
Blue Gain
—
default = 0x0020 (32) = 1x gain.
0-6
Initial Gain = bits (6-0) x 0.03125.
7, 8
Analog gain = (Bit 8 + 1) x (Bit 7 + 1) x Initial Gain (each bit gives 2x gain).
9,10
9, 10: Total Gain = (Bit 9 + 1) x (Bit 10 + 1) x Analog Gain (each bit gives 2x gain).
0x2D
Red gain
—
default = 0x0020 (32) = 1x gain.
0-6
Initial Gain = bits (6-0) x 0.03125.
7, 8
Analog Gain = (Bit 8 + 1) x (Bit 7 + 1) x Initial Gain (each bit gives 2x gain).
9,10
9, 10: Total Gain = (Bit 9 + 1) x (Bit 10 + 1) x Analog Gain (each bit gives 2x gain).
0x2E
Green2 gain
—
default = 0x0020 (32) = 1x gain.
0-6
Initial Gain = bits (6-0) x 0.03125.
7, 8
Analog Gain = (Bit 8 + 1) x (Bit 7 + 1) x Initial Gain (each bit gives 2x gain).
9,10
9, 10: Total gain = (Bit 9 + 1) x (Bit 10 + 1) x Analog Gain (each bit gives 2x gain).
Table 7:
Register Description (continued)
REGISTER
BIT
DESCRIPTION