AR0130 Datasheet, PDF (17/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

AR0130: 1/3-Inch CMOS Digital Image Sensor
Real-Time Context Switching
Real-Time Context Switching
In the AR0130, the user may switch between two full register sets (listed in Table 6) by
writing to a context switch change bit in R0x30B0[13]. This context switch will change all
registers (no shadowing) at the frame start time and have the new values apply to the
immediate next exposure and readout time.
Table 6:
Real-Time Context-Switchable Registers
Register Description
Y_Addr_Start
X_Addr_Start
Y_Addr_End
X_Addr_End
Coarse_Integration_Time
Fine_Integration_Time
Y_Odd_Inc
Green1_Gain (GreenR)
Blue_Gain
Red_Gain
Green2_Gain (GreenB)
Global_Gain
Analog Gain
Frame_Length_Lines
Digital_Binning
Context A
R0x3002
R0x3004
R0x3006
R0x3008
R0x3012
R0x3014
R0x30A6
R0x3056
R0x3058
R0x305A
R0x305C
R0x305E
R0x30B0[5:4]
R0x300A
R0x3032[1:0]
Register Number
Context B
R0x308C
R0x308A
R0x3090
R0x308E
R0x3016
R0x3018
R0x30A8
R0x30BC
R0x30BE
R0x30C0
R0x30C2
R0x30C4
R0x30B0[9:8]
R0x30AA
R0x3032[5:4]
Features
Reset
Hard Reset of Logic
Soft Reset of Logic
Clocks
See the AR0130 Register Reference for additional details.
The AR0130 may be reset by using RESET_BAR (active LOW) or the reset register.
The RESET_BAR pin can be connected to an external RC circuit for simplicity. The
recommended RC circuit uses a 10k resistor and a 0.1F capacitor. The rise time for the
RC circuit is 1s maximum.
Soft reset of logic is controlled by the R0x301A Reset register. Bit 0 is used to reset the
digital logic of the sensor while preserving the existing two-wire serial interface configu-
ration. Furthermore, by asserting the soft reset, the sensor aborts the current frame it is
processing and starts a new frame. This bit is a self-resetting bit and also returns to “0”
during two-wire serial interface reads.
The AR0130 requires one clock input (EXTCLK).
AR0130 DS Rev. L Pub. 6/15 EN
17
©Semiconductor Components Industries, LLC, 2015.