MT9P031I12STM-ES Aptina LLC, MT9P031I12STM-ES Datasheet - Page 37

• Manufacturer Part Number: MT9P031I12STM-ES
• Manufacturer: Aptina LLC

Specifications of MT9P031I12STM-ES

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Standby and Chip Enable
Full-Array Readout
PDF: 09005aef81a4a477/Source: 09005aef81a4a495
MT9P031_DS - Rev. E 7/10 EN
3. Wait 1ms to ensure that the VCO has locked.
4. Set Use_PLL (R0x10[1] = 1) to switch from EXTCLK to the PLL-generated clock.
1. Hard Standby: By pulling STANDBY_BAR LOW,
1. Set Row_Start and Column_Start to 0.
2. Set Row_Size to 2003.
3. Set Column_Size to 2751.
4. Set Manual_BLC to 1.
5. Set Row_BLC to 0.
6. Set Row_Black_Default_Offset to 0.
7. Set Show_Dark_Rows and Show_Dark_Columns to 0.
1. Set Row_Start to 12.
2. Set Row_Size to 1993.
3. Set Manual_BLC to 0.
2 MHz <
180 MHz < (
The MT9P031 can be put in a low-power Standby state by either method below:
or
2. Soft Standby: By clearing the Chip_Enable register field (R0x07[1] = 0).
When the sensor is put in standby, all internal clocks are gated, and analog circuitry is
put in a state that it draws minimal power. The two-wire serial interface remains mini-
mally active so that the Chip_Enable bit can subsequently be cleared. Reads cannot be
performed and only the Chip_Enable and Invert_Standby registers are writable.
If the sensor was in continuous mode when put in standby, it resumes from where it was
when standby was deactivated. Naturally, this frame and the next frame are corrupted,
though the sensor itself does not realize this. As this could affect automatic black level
calibration, it is recommended that either the chip be paused (by setting Restart_Pause)
before being put in standby mode, or it be restarted (setting Restart) upon resumption of
operation.
For maximum power savings in standby mode, EXTCLK should not be toggling.
When standby mode is entered, either by clearing Chip_Enable or by asserting
STANDBY_BAR, the PLL is disabled automatically or powered down. It must be manu-
ally re-enabled when leaving standby as needed.
The entire array, including dark pixels, can be read out without digital processing or
automatic black level adjustments. This can be accomplished as follows:
If automatic analog (coarse) BLC is desired, but no digital processing, modify the above
settings as follows:
It is desirable to keep (
must be between 16 and 255, inclusive.
f
EXTCLK / N < 13.5 MHz
f
EXTCLK × M) / N < 360 MHz
f
EXTCLK / n) as large as possible within the limits. Also, "m"
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MT9P031: 1/2.5-Inch 5Mp Digital Image Sensor
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©2005 Aptina Imaging Corporation. All rights reserved.
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