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__5_REV5.fm - Rev. B 2/06 EN
89 Ā©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
JPEG Indirect Registers
Micron Confidential and Proprietary
24 timer.config uchar
0 RW Bits [1:0] of this variable determine how
afm.timer.maxShortDelay, afm.timer.maxLongDelay,
and afm.timer.maxQuickMove
are used to estimate duration of lens movements. Bits
[7:2] are unused.
If a command-driven lens actuator does not provide any
feedback about its status after receiving a command to
move an AF lens, the AFM driver must somehow predict
how long the lens will be moving, to prevent the AF
driver from collecting sharpness scores and issuing new
commands during its movement. The need for
predictions of lens travel time is satisfied rather
inexpensively by the AFM driver function
AFM_TimerSetTimeToMove, which takes as arguments 2
logical lens positions and estimates the time required to
move the lens between them. The function can use 2
different estimation methods, both of which rely on 3
user-set parameters, afm.timer.maxShortDelay,
afm.timer.maxLongDelay, and
afm.timer.maxQuickMove, as a sole source of
information about how fast the lens actuator moves the
lens. The default method of piecewise linear estimation
is used when bit 0 of afm.timer.config is cleared. Setting
this bit to 1 enables the alternative bipolar method. The
bipolar method is very simple: if the distance between
the 2 logical positions given to
AFM_TimerSetTimeToMove as arguments exceeds
afm.timer.maxQuickMove, then
afm.timer.maxLongDelay is selected as the proper lens
travel time estimate. Otherwise, unless the 2 logical
positions are the same, the estimate equals
afm.timer.maxShortDelay. If the 2 positions are the
same, the estimate should be 0, and indeed is 0 if bit 1 of
afm.timer.config is cleared. However, if this bit is set to 1
and the positions are the same, the function
AFM_TimerSetTimeToMove outputs
afm.timer.maxShortDelay instead of 0.
25 si.vmt void*
E9CE RW Pointer to serial interface VMT.
Default serial interface VMT located in ROM contains
pointers to the following public functions:
AFM_SiSendCmd,
AFM_SiSetActvFlag,
AFM_SiSendByte,
AFM_SiRecvByte.
The pointers are all of type void* and have the following
names: pSendCmd, pSetActvFlag, pSendByte, pRecvByte.
27 si.clkMask uint
0 RW Mask selecting one of GPIO pads as the clock line of
dedicated two-wire serial interface between the
MT9D111 and a lens actuator (for example, helimorph).
29 si.dataMask uint
0 RW Mask selecting one of GPIO pads as the data line of the
dedicated two-wire serial interface to the lens actuator.
Table 16: Driver VariablesāAuto Focus Mechanics Driver (ID = 6) (continued)
Offs Name Type Default
1
RW Description