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
82 ©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
Auto Focus
Table 15: Driver Variables-Auto Focus Driver (ID = 5)
Off Name Type Default RW Description
0 Vmt void* 0xE9D2 RW
Pointer to virtual method table (VMT)
2 windowPos uchar 0x44 RW
Position of the upper left corner of the first AF window (W11):
Bits [3:0]
—x coordinate (horizontal offset from the upper left
corner of the frame) in units of 1/16th of frame width,
Bits [7:4]—y coordinate (vertical offset from the upper left corner
of the frame) in units of 1/16th of frame height.
New position written to this variable takes effect after
REFRESH_MODE command is given to Sequencer driver (sq.cmd is
set to 6).
3 windowSize uchar 0x77 RW
Dimensions of the 4 x 4 array of AF windows:
Bits [3:0]
—width (in units of 1/16th of frame width) decremented
by 1,
Bits [7:4]
—height (in units of 1/16th of frame height)
decremented by 1.
New dimensions written to this variable take effect only after
REFRESH_MODE command is given to the Sequencer (sq.cmd is
set to 6).
4modeuchar0 RW
Two mode switches and 5 bits reserved for use in default
snapshot AF mode:
Bit 7
—manual mode switch (0—manual mode disabled, 1—
enabled),
Bit 6—creep compensation mode switch (0 - creep compensation
mode disabled, 1
—enabled),
Bits [4:0]—reserved for use in snapshot AF mode.
If AF is enabled in the Sequencer (sq.mode bit 4 = 1) and manual
mode is disabled (af.mode bit 7 = 0), a snapshot AF sequence can
be triggered at any time by setting af.mode bit 0 to 1. Bits [4:0]
are used in the sequence and automatically cleared at its end.
5 modeEx uchar 128 RW
Four option switches and 4 status indicators:
Bit 7
—switch enabling the second flyback (jump to the start
position of the first scan) and then jump to best focus position,
Bit 6
—switch enabling the second flyback and retracing of scan
steps to best focus position (0
—option disabled, 1—enabled),
Bit 5— switch enabling the second scan (0—disabled,
1
— enabled),
Bit 4
— error flag to indicate that AF has failed due to insufficient
variability of sharpness scores with lens positions (see af.shaTH).
Bit 3—if bit 7 of af.mode equals 0, this bit enables skipping 1
extra frame after detecting that bit 1 of afm.status has been
cleared (i.e. after the end of every lens movement),
Bit 2
—status indicator, set to 1 when the extra frame is being
skipped,
Bit 1
—status indicator, set to 1 when the second scan is in
progress,
Bit 0
—status indicator, set to 1 when sharpness scores are ready.
6 numSteps uchar 10 RW
Number of steps (lens positions tried) in the first scan.