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
83 ©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
7 initPos uchar 0 RW
Number (index) of start position, af.positions[af.initPos], used in
the first scan and optional second scan. Must be 0 at the
beginning of the first scan if the second is enabled. Otherwise,
can be set before the first scan to any value below 20-
af.numSteps. The AF driver makes af.initPos equal to af.numSteps
at the beginning of the second scan and equal to 0 at the end of
last scan (first or second, whichever is last).
8 numSteps2 uchar 6 RW
Bits [3:0]
—desired number of steps in second scan (max. allowed
number is 14)
Bits [7:4]—actual number of steps in the second scan (calculated
by the AF driver at the beginning of the scan).
9 stepSize uchar 6 RW
Logical step size for the second scan. Because the logical range of
motion is from 0 to 255, af.stepSize=6 means that during the
second scan the AF driver tries to move the lens in increments
equal to 6/255 of the length of its entire motion range. However,
the lens actuator may or may not be able to move the lens in
steps of precisely that size. It is important to ascertain that lens
movements requested by the AF driver during the second scan
can be at least reasonably approximated by the lens actuator. The
quality of the approximation may depend on how well the
physical limitations of the actuator are accounted for in the
source code and /or configuration of the AFM driver.
10 wakeUpLine uint 448 RW
Number of image row at which the MCU wakes up to execute AF
driver code. When the function AF_SetSize resizes the 4 x 4 array
of AF windows according to new values of af.windowPos and
af.windowSize, it automatically makes af.wakeUpLine equal to
the number of the second row below the bottom of the array. If
af.windowPos and af.windowSize are such that the bottom of the
array is outside the frame, the value given to af.wakeUpLine by
AF_SetSize is greater than frame height, i.e. invalid. It must be
changed to something less than the frame height, otherwise AF
does not work.
12 zoneWeights ulong 0xFFFFFF
FF
RW
Weights of the AF windows or zones. Bits [1:0] of this variable
represent the weight of window W11, bits [3:2] the weight of
W12, and so on to bits [31:30] that represent the weight of W44.
Since each weight is represented by just 2 bits, it is allowed to
have only 4 values, 0, 1/3, 2/3 or 1. Value stored in each 2 bits
equals window weight times 3, so the value of 1 signifies the
weight of 1/3, 2 stands for 2/3, and 3 for 1.
16 distanceWeig
ht
uint 0xFF RW
Reserved.
Table 15: Driver Variables-Auto Focus Driver (ID = 5) (continued)
Off Name Type Default RW Description