ov9625 ETC-unknow, ov9625 Datasheet - Page 5

• Manufacturer Part Number: ov9625
• Description: Ov9625 Color Cmos Sxga Mpixel Camerachip Ov9121 Cmos Sxga Mpixel Camerachip
• Manufacturer: ETC-unknow

O
Reset
Figure 9 RESET Timing Diagram
Power-Down Mode
Figure 10 PWDN Timing Diagram
Version 1.3, September 15, 2003
RESET
mni
PWDN
The
pull-down (weak) resistor in the sensor so the default
status of the
There are two ways for a sensor reset:
1.
2.
The
pull-down (weak) resistor in the sensor so the default
status of the
1ms
ision
RESET
PWDN
Hardware reset - Pulling the
keeping it high for at least 1 ms. As shown in
Figure
will be most stable after the period shown as 4096
External Clock.
Software reset - Writing 0x80 to register 0x12 (see
“COMH” on page
software reset is used, a reset operation done twice
is recommended to make sure the sensor is stable
and ready to access registers. When performing a
software reset twice, the second reset should be
initiated after the 4096 External Clock period as
shown in
pin (pin 7) is active high. There is an internal
pin (pin 10) is active high. There is an internal
9, after a reset has been initiated, the sensor
RESET
PWDN
Figure
4096 External Clock
Sensor Power Down
pin is low.
pin is low.
9.
20) for a software reset. If a
RESET
pin high and
Proprietary to OmniVision Technologies
SCCB Interface
Video Output
Two methods of power-down or standby operation are
available with the OV9625/OV9121.
•
•
OV9625/OV9121 provides an on-chip SCCB serial control
port that allows access to all internal registers, for
complete control and monitoring of OV9625/OV9121
operation.
Refer to
Bus (SCCB) Specification
interface.
RGB Raw Data Output
The OV9625 C
output.
B&W Output
The OV9121 offers 10-bit luminance signal data output.
Hardware power-down may be selected by pulling
the
occurs, the OV9625/OV9121 internal device clock is
halted and all internal counters are reset. The current
draw is less than 10 µA in this standby mode.
Software power-down can be effected by setting the
COMC[4] register bit high. Standby current will be
less then 1 mA when in software power-down. All
register content is maintained in standby mode.
PWDN
OmniVision Technologies Serial Camera Control
pin (pin 7) high (+3.3VDC). When this
AMERA
C
HIP
for detailed usage of the SCCB
offers 10-bit RGB raw data
Functional Description
5