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
152 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Start-Up and Usage
Micron Confidential and Proprietary
2. Preventing additional leakage current during standby
a. Set R10:1[7]=1 to prevent elevated standby current. It controls the bidirectional
pads D
OUT, LINE_VALID, FRAME_VALID, PIXCLK, and GPIO.
b. If the outputs are allowed to be left in an unknown state while in standby, the
current can increase. Therefore, either have the receiver hold the camera out-
puts HIGH or LOW, or allow the camera to drives its outputs to a known state by
setting R13:0[6]=1. R13:0[4] needs to remain at the default value of “0.” In this
case, some pads are HIGH while some are LOW. For dual camera systems, at
least one camera has to be driving the bus at any time so that the outputs are not
left floating.
c. For each GPIO that is left floating (which are set as inputs by default), configure
as outputs and drive LOW by the setting the respective bit to “0” in the GPIO
variables 0x9078, 0x9079, 0x9070, and 0x9071 (accessed via R198:1 and R200:1).
For example, if all GPIOs are floating inputs, the following settings can be used:
i. R198:1=0x9078
ii. R200:1=0x0000
iii.R198:1=0x9079
iv. R200:1=0x0000
v. R198:1=0x9070
vi. R200:1=0x0000
vii.R198:1=0x9071
viii.R200:1=0x0000
3. Check if other devices sharing the GPIO bus has conflicts with this arrangement
a. If a GPIO configured as an input is not allowed to be set as output during
standby, have the external source hold its output HIGH or LOW during standby.
4. Putting the camera in standby
a. Assert STANDBY=1. Optionally, stop the CLKIN clock to minimize the standby
current specified in the MT9D111 data sheet. For soft standby, program standby
R13:0[2]=1 instead.
To Exit Standby
1. De-assert standby
a. Provide CLKIN clock, if it was disabled when using STANDBY
b. De-assert STANDBY=0 if hard standby was used. Or program R13:0[2]=0 if soft
standby was used
2. Reconfiguring output pads
3. If necessary, reconfigure the GPIOs back to the desired state by GPIO variables 0x9078
and 0x9079. Also set R10:1[7]=0 if any GPIOs are used as inputs.
4. Issue a GO_PREVIEW command to the firmware by setting seq.cmd=1
5. Poll seq.state until the current state is preview (seq.state=3)
The following timing requirements should be met to turn off CLKIN during hard
standby:
1. After asserting standby, wait 1 row time before stopping the clock
2. Restart the clock 24 clock cycles before de-asserting standby