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MT9V111 Datasheet(PDF) 27 Page - Micron Technology

Part No. MT9V111
Description  1/4-Inch SOC VGA CMOS Active-Pixel Digital Image Sensor
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Maker  MICRON [Micron Technology]
Homepage  http://www.micron.com
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MT9V111 Datasheet(HTML) 27 Page - Micron Technology

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Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT9V111_2.fm - Rev. G 1/05 EN
27
©2004 Micron Technology, Inc. All rights reserved.
MT9V111 - 1/4-Inch SOC VGA Digital Image Sensor
Sensor Core Registers
Pixel Integration Control
These registers (along with the window sizing and blanking registers) control the integration time for the pixels.
Reg0x09: number of rows of integration
Reg0x0C: reset delay, default = 0x0000 (0). This is the number of master clocks that the timing and control logic waits
before asserting the reset for a given row.
The actual total integration time, tINT, is:
tINT = Reg0x09 x Row Time - Overhead Time - Reset Delay, where:
Row Time = (Reg0x04 + 1 + 113 + Reg0x05) x 2 master clock periods
Overhead Time = K x 57 master clock periods
Reset Delay = K x Reg0x0C master clock periods
If the value in Reg0x0C exceeds (row time - 444)/K master clock cycles, the row time will be extended by (K x Reg0x0C -
(row time - 444)) clock cycles
where
K = 4 when Reg0x07[4] = 0 and
K = 2 when Reg0x07[4] = 1
In this expression the row time term corresponds to the number of rows integrated. The overhead time is the time
between the READ cycle and the RESET cycle, and the final term is the effect of the reset delay. Typically, the value of
Reg0x09 is limited to the number of rows per frame (which includes vertical blanking rows), such that the frame rate is not
affected by the integration time. If Reg0x09 is increased beyond the total number of rows per frame, the MT9V111 will
add additional blanking rows as needed.
9
0x09
11:0
Number of rows of integration
default = 0x00F8 (248).
Shutter Delay
12
0x0C
9:0
Default = 0x0000 (0). This is the number of master clocks x K that the timing and control logic waits
before asserting the reset for a given row.
Reset (Soft)
13
0x0D
0
This register is used to reset the sensor to its default, power-up state. To reset, first write a “1” into bit
0 of this register to put the MT9V111 in reset mode, then write a "0" into bit 0 to resume operation.
2X Zoom
18
0x12
9:0
Address of starting column in 2X zoom mode. Bit 0 of Reg0x1E must be set.
19
0x13
8:0
Address of starting row in 2X zoom mode. Bit 0 of Reg0x1E must be set.
30
0x1E
0
Zoom by 2X. This bit must be set when using Reg0x12 and Reg0x13.
Table 9:
Sensor Core Register Description (Continued)
Register
(Dec)
(Hex)
Bit
Description


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