Datasheet
Table Of Contents
- 1/3.2-Inch System-On-A-Chip (SOC) CMOS Digital Image Sensor
- Features
- Applications
- Ordering Information
- General Description
- Feature Overview
- Typical Connection
- Ballout and Interface
- Architecture Overview
- Registers and Variables
- Registers
- Registers
- IFP Registers, Page 1
- IFP Registers, Page 2
- JPEG Indirect Registers
- Table 8: JPEG Indirect Registers (See Registers 30 and 31, Page 2)
- Firmware Driver Variables
- Table 9: Drivers IDs
- Table 10: Driver Variables-Monitor Driver (ID = 0)
- Table 11: Driver Variables-Sequencer Driver (ID = 1)
- Table 12: Driver Variables-Auto Exposure Driver (ID = 2)
- Table 13: Driver Variables-Auto White Balance (ID = 3)
- Table 14: Driver Variables-Flicker Detection Driver (ID = 4)
- Table 15: Driver Variables-Auto Focus Driver (ID = 5)
- Table 16: Driver Variables-Auto Focus Mechanics Driver (ID = 6)
- Table 17: Driver Variables-Mode/Context Driver (ID = 7)
- Table 18: Driver Variables-JPEG Driver (ID = 9)
- Table 19: Driver Variables-Histogram Driver (ID = 11)
- MCU Register List and Memory Map
- JPEG Indirect Registers
- Output Format and Timing
- Sensor Core
- Feature Description
- PLL Generated Master Clock
- PLL Setup
- Window Control
- Pixel Border
- Readout Modes
- Figure 20: 6 Pixels in Normal and Column Mirror Readout Modes
- Figure 21: 6 Rows in Normal and Row Mirror Readout Modes
- Table 30: Skip Values
- Figure 22: 8 Pixels in Normal and Column Skip 2x Readout Modes
- Figure 23: 16 Pixels in Normal and Column Skip 4x Readout Modes
- Figure 24: 32 Pixels in Normal and Column Skip 8x Readout Modes
- Figure 25: 64 Pixels in Normal and Column Skip 16x Readout Modes
- Table 31: Row Addressing
- Table 32: Column Addressing
- Frame Rate Control
- Context Switching
- Integration Time
- Flash STROBE
- Global Reset
- Analog Signal Path
- Analog Inputs AIN1-AIN3
- Firmware
- Firmware
- Start-Up and Usage
- General Purpose I/O
- Introduction
- GPIO Output Control Overview
- Waveform Programming
- Notification Signals
- Digital and Analog Inputs
- GPIO Software Drivers
- Auto Focus
- Figure 42: Search for Best Focus
- Figure 43: Scene with Two Potential Focus Targets at Different Distances from Camera
- Figure 44: Dependence of Luminance-Normalized Local Sharpness Scores on Lens Position
- Figure 45: Example of Position Weight Histogram Created by AF Driver
- Figure 46: Auto Focus Windows
- Figure 47: Computation of Sharpness Scores and Luminance Average for an AF Window
- Table 41: Examples of AF Filters that can be Programmed into the MT9D111
- Spectral Characteristics
- Electrical Specifications
- Packaging
- Appendix A: Two-Wire Serial Register Interface
- Protocol
- Sequence
- Bus Idle State
- Start Bit
- Stop Bit
- Slave Address
- Data Bit Transfer
- Acknowledge Bit
- No-Acknowledge Bit
- Page Register
- Sample Write and Read Sequences
- Figure 52: WRITE Timing to R0x09:0-Value 0x0284
- Figure 53: READ Timing from R0x09:0; Returned Value 0x0284
- Figure 54: WRITE Timing to R0x09:0-Value 0x0284
- Figure 55: READ Timing from R0x09:0; Returned Value 0x0284
- Figure 56: Two-Wire Serial Bus Timing Parameters
- Table 46: Two-wire Serial Bus Characteristics
- Revision History
PDF: 09005aef8202ec2e/Source: 09005aef8202ebf7 Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT9D111__6_REV5.fm - Rev. B 2/06 EN
130 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Feature Description
Micron Confidential and Proprietary
Integration Time
Integration time is controlled by R0x09:0 (shutter width in multiples of the row time) and
R0x0C:0 (shutter delay, in PIXCLK_PERIOD/2). R0x0C:0 is used to control sub-row inte-
gration times and only has a visible effect for small values of R0x09:0. The total integra-
tion time,
t
INT, is shown in the equation below:
In the equation, the integration overhead corresponds to the delay between the row
reset sequence and the row sample (read) sequence.
Typically, the value of R0x09:0 is limited to the number of rows per frame (which
includes vertical blanking rows), so that the frame rate is not affected by the integration
time. If R0x09:0 is increased beyond the total number of rows per frame, the sensor adds
blanking rows as needed. Additionally,
t
INT must be adjusted to avoid banding in the
image caused by light flicker. Therefore,
t
INT must be a multiple of 1/120 of a second
under 60Hz flicker, and a multiple of 1/100 of a second under 50Hz flicker.
Maximum Shutter Delay
The shutter delay can be used to reduce the integration time. A programmed value of N
reduces the integration time by N master clock periods. The maximum shutter delay is
set by the row time and the sample time, as shown in the equation below:
If the value in this register exceeds the maximum value given by this equation, the sensor
may not generate an image.
t
INT =
R0x09:0 * Row Time - Integration Overhead - Shutter Delay
where:
Row Time =
(R0x04:0/S + BORDER + HBLANK_REG)*PIXCLK_PERIOD master clock
periods (from Table on page 120)
S=
Skip Factor, multiplied by 2 if binning is enabled
Overhead Time =
260 master clock periods (262 in 1 ADC mode)
Shutter Delay =
R0x0C:0 * PIXCLK_PERIOD master clock periods (/2 in 1 ADC mode)
with default
settings:
t
INT =
(1,232 * (1,600 + 348)) - 260 - 0
=
2,399,676 master clock periods = 66.66ms at 36 MHz
Maximum shutter
delay
=
(Row Time - pointer_operations)
where:
Row Time =
(R0x04:0/S + BORDER + HBLANK_REG)*PIXCLK_PERIOD master clock
periods (from Table on page 120)
S=
Skip Factor, multiplied by 2 if binning is enabled
pointer_operations =
see Table 34 on page 129.
with default settings:
Maximum shutter
delay
=
(1,600 + 348) - 461
=
1,487 (master clock periods)