Datasheet

PDF: 09005aef8202ec2e/Source: 09005aef8202ebf7 Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT9D111__3_REV5.fm - Rev. A 2/06 EN
37 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Registers
Micron Confidential and Proprietary
Bits 6:0 Initial Gain Initial gain = bits 6:0*0.03125.
20 Y N
R44—0x2C - Blue Gain (R/W)
Bits 11:9 Digital Gain Total gain = (bit 9 + 1)*(bit 10 + 1)*(bit 11 + 1)*analog gain
(each bit gives 2x gain).
0 Y N
Bits 6:0 Initial Gain Initial gain = bits [6:0]*0.03125.
20 Y N
Bits 8:7 Analog Gain Analog gain = (bit 8 + 1)*(bit 7 + 1)*initial gain (each bit
gives 2x gain).
0 Y N
R45—0x2D - Red Gain (R/W)
Bits 11:9 Digital Gain Total gain = (bit 9 + 1)*(bit 10] + 1)*(bit 11 + 1)*analog gain
(each bit gives 2x gain).
0 Y N
Bits 8:7 Analog Gain Analog gain = (bit 8 + 1)*(bit 7 + 1)*initial gain (each bit
gives 2x gain).
0 Y N
Bits 6:0 Initial Gain Initial gain = bits 6:0*0.03125.
20 Y N
R46—0x2E - Green2 Gain (R/W)
Bits 11:9 Digital Gain Total gain = (bit 9 + 1)*(bit 10 + 1)*(bit 11 + 1)*analog gain
(each bit gives 2x gain).
0 Y N
Bits 8:7 Analog Gain Analog gain = (bit 8 + 1)*(bit 7 + 1)*initial gain (each bit
gives 2x gain).
0 Y N
Bits 6:0 Initial Gain Initial gain = bits 6:0*0.03125.
20 Y N
R47—0x2F - Global Gain (R/W)
Bits 11:0 Global Gain This register can be used to simultaneously set all 4 gains.
When read, it returns the value stored in R0x2B:0.
20 Y N
R48—0x30 - Row Noise (R/W)
Bit 15 Frame-wise
Digital
Correction
By default, the row noise is calculated and compensated for
individually for each color of each row. When this bit is set,
the row noise is calculated and applied for each color of
each of the first two 2 (two pairs of values) and the same
values are applied to each subsequent row, so that new
values are calculated and applied once per frame.
0 N N
Bits
14:12
Gain
Threshold
When the upper analog gain bits are equal to or larger
than this threshold, the dark column average is used in the
row noise correction algorithm. Otherwise, the subtracted
value is determined by bit 11. This check is independently
performed for each color, and is a means to turn off the
black level algorithm for lower gains.
0 N N
Bit 11 Use Black
Level Average
1—Use black level frame average from the dark rows in the
row noise correction algorithm for low gains. This frame
average was taken before the last adjustment of the offset
DAC for that frame, so it might be slightly off.
0
—Use mean of black level programmed threshold in the
row noise correction algorithm for low gains.
0 N Y
Bit 10 Enable
Correction
1—Enable row noise cancellation algorithm.
When this bit is set, the average value of the dark columns
read out is used as a correction for the whole row. The dark
average is subtracted from each pixel on the row, and then
a constant is added (bits 9:0).
0
—Normal operation.
1 N Y
Table 5: Sensor Register Description (continued)
Bit
Field Description
Default
(Hex)
Sync’d to
Frame Start
Bad
Frame