AR0833 Datasheet, PDF (16/64 Pages) ON Semiconductor – 8 Mp CMOS Digital Image Sensor

AR0833: 1/3.2-Inch 8 Mp CMOS Digital Image Sensor
Power Down Sequence
Soft Standby and Soft Reset
The AR0833 can reduce power consumption by switching to the soft standby state when
the output is not needed. Register values are retained in the soft standby state. The
details of the sequence are described below and shown in Figure 8 on page 16.
Soft Standby
1. Disable streaming if output is active by setting mode_select 0x301A[2] = 0.
2. The soft standby state is reached after the current row or frame, depending on config-
uration, has ended.
Soft Reset
1. Follow the soft standby sequence list above.
2. Set software_reset = 1 (R0x3021) to start the internal initialization sequence.
3. After 2400 EXTCLKs (tentative), the internal initialization sequence is completed and
the current state returns to soft standby automatically.
Figure 8: Soft Standby and Soft Reset
EXTCLK
mode_select
R0x0100
Logic “1”
next row/frame
Logic “0”
software_reset
R0x0103
Logic “0”
Logic “1”
Logic “0”
Streaming
Soft Standby
480 2400 EXTCLKs
Soft Reset
Soft Standby
AR0833_DS Rev. H Pub. 4/15 EN
16
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