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
141 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Firmware
Micron Confidential and Proprietary
a. Set auto exposure, white balance and auto focus speed
3. Execute sensor REFRESH command
4. Run in preview until shutter button is depressed
a. If the shutter button is depressed halfway, execute the lock program
i. Configure preview state to disable necessary functions to be locked, e.g., auto
exposure, white balance, and auto focus
ii. Configure PreviewLeave state for fast settling of those functions
iii. Execute the lock program
iv. The lock program transits PreviewLeave state, perform fast settling, and
return to Preview state, which was configured to freeze (lock)
b. If the shutter button is depressed all the way, execute the capture program
i. If already in lock mode, disable PreviewLeave state and execute capture pro-
gram
ii. If not in lock state and some settling is required (auto focus), configure Pre-
viewLeave state for fast settling
iii. Execute capture program. The program transitions to PreviewLeave, perform
required settling and proceed through mode change to capture
5. Capture frame
a. Preconfigure capture mode variables for correct image size, compression, and
select video/still
b. Monitor the "state" variable. When the state is capture, grab the frame(s)
Optionally, configure Capture Enter or Preview Leave to have output blanked. This helps
grabbing correct frame for capture.
Flash Types and Settings
The sequencer supports three types of flash light source:
•LED
•Xenon
• Xenon continuous
Flash type is selected using seq.sharedParams.flashType.
States in the sequencer diagram have an associated flash setting. That setting is specified
using variables such as seq.prevParEnter.flash.
The four settings available are shown in Table 37.
Using LED Flash
To perform CM_LOCK
1. Set PreviewLeave flash configuration to MODE_FLASH_AUTO. Set the state's AE and
WB to fast settling
2. Set Preview flash configuration to MODE_FLASH_OFF
3. Perform CM_LOCK. That turns flash on in low-light conditions, perform fast AE/WB
settling, return to Preview and turn flash off
Table 37: Flash Types and Settings
Type Setting
MODE_FLASH_OFF Turns flash off
MODE_FLASH_ON Turns flash on
MODE_FLASH_AUTO Checks for low-light condition and turns flash on if necessary
MODE_FLASH_LOCKED Turns flash on or off to put it into the state selected by MODE_FLASH_AUTO