MT9P031I12STM-ES Aptina LLC, MT9P031I12STM-ES Datasheet - Page 35

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

Specifications of MT9P031I12STM-ES

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Features
Reset
Hard Reset
Soft Reset
Power Up and Power Down
Clocks
PDF: 09005aef81a4a477/Source: 09005aef81a4a495
MT9P031_DS - Rev. E 7/10 EN
1. Ensure RESET_BAR is asserted (LOW).
2. Bring up the supplies. If both the analog and the digital supplies cannot be brought
3. Negate RESET_BAR (HIGH) to bring up the sensor.
1. Assert RESET_BAR.
2. Remove the supplies.
The MT9P031 may be reset by using RESET_BAR (active LOW) or the reset register.
Assert (LOW) RESET_BAR, it is not necessary to clock the device. All registers return to
the factory defaults. When the pin is negated (HIGH), the chip resumes normal opera-
tion.
Set the Reset register field to “1” (R0x0D[0] = 1). All registers except the following will be
reset:
• Chip_Enable
• Synchronize_Changes
• Reset
• Use_PLL
• Power_PLL
• PLL_m_Factor
• PLL_n_Divider
• PLL_p1_Divider
When the field is returned to “0,” the chip resumes normal operation.
When first powering on the MT9P031, follow this sequence:
When powering down, be sure to follow this sequence to ensure that I/Os do not load
any buses that they are connected to.
The MT9P031 requires one clock (EXTCLK), which is nominally 96 MHz. By default, this
results in pixels being output on the D
V
48 Mp/s, respectively. The EXTCLK clock can be divided down internally by setting
Divide_Pixel_Clock to a non-zero value. This slows down the operation of the chip as
though EXTCLK had been divided externally.
f
PIXCLK= {
DD
up simultaneously, ensure the digital supply comes up first.
_IO = 1.8V, maximum master clock and maximum data rate become 48 MHz and
f
f
EXTCLK
EXTCLK / (2 × Divide_Pixel_Clock)
35
OUT
MT9P031: 1/2.5-Inch 5Mp Digital Image Sensor
pins at a maximum data rate of 96 Mp/s. With
if Divide_Pixel_Clock = 0
otherwise
Aptina reserves the right to change products or specifications without notice.
©2005 Aptina Imaging Corporation. All rights reserved.
Features