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__7_REV5.fm - Rev. B 2/06 EN
163 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
General Purpose I/O
Micron Confidential and Proprietary
GPIO3, the user only has to write 8 to the address 0x1073 (also known as register
GPIO_OUTPUT_TOGGLE_L). To do the same by writing to the register GPIO_DATA_L,
the user must know in advance the state of its third bit and all other bits corresponding
to output pads.
In general, writing a positive number to one of the GPIO_OUTPUT_* registers has the
following effect: the GPIO output pads corresponding to ones in the binary representa-
tion of the number are toggled, set, or cleared, while the output pads corresponding to
zeros and all input pads are left alone (masked). Once the GPIO outputs and the
GPIO_DATA_* registers are updated, all bits in the GPIO_OUTPUT_* registers are auto-
matically cleared.
The second way to obtain a desired output from the GPIO is to program into it a set of
periodic waveforms, initialize their generation, and optionally monitor its progress. The
advantage of using this way is that the GPIO, once programmed and activated, generates
the desired waveforms on its own, without waiting for any external stimuli, and there-
fore with the best attainable timing accuracy. It is possible to override, suspend or abort
this autonomous waveform generation by writing to appropriate GPIO registers, but no
register writing is necessary for the GPIO to continue. If necessary, the GPIO can notify
the MCU about reaching certain points on the waveform generation timeline, e.g., the
first rising edge or end of a selected waveform. See "Notification Signals" on page 165 for
more details.
Waveform Programming
A large subset of the GPIO registers is dedicated to programming periodic waveforms. In
designing this subset, the main concern has been to meet the requirements of the most
demanding AF actuators known to date. All registers belonging to this subset have
names starting with GPIO_WG_, where WG stands for waveform generator. The
GPIO_WG_* registers allow one to individually specify up to 8 waveforms, to be output
through the GPIO[7:0] pads. It is not possible to output preprogrammed waveforms
through the GPIO[11:8] outputs. These outputs are controlled only by the
GPIO_DATA_H and GPIO_OUTPUT_*_H registers.