AR0835HS datasheet(49/70 Pages) ONSEMI

49 / 70 page

AR0835HS: 1/3.2-Inch 8 Mp CMOS Digital Image Sensor

Integration Time for Interlaced HDR Readout

AR0835HS_DS Rev. D Pub. 5/15 EN

©Semiconductor Components Industries, LLC, 2015.

This programming restriction must be met for correct operation:

• global_read_start > global_shutter_start.

Figure 36:

Controlling the SHUTTER Output

Using FLASH with Global Reset

If R0x315E global_seq_trigger[2] = 1 (global flash enabled) when a global reset sequence

is triggered, the FLASH output signal will be pulsed during the integration phase of the

global reset sequence. The FLASH output will assert a fixed number of cycles after the

start of the integration phase and will remain asserted for a time that is controlled by the

value of the flash_count register. When flash_count is programmed for value N, (where N

is 0–0x3FE) the resulting flash duration is given by N * 512 * (1/vt_pix_clk_freq_mhz), as

shown in Figure 37.

Figure 37:

Using FLASH with Global Reset

ERS

Row Reset

Integration

Readout

Trigger

Wait for end of current row

Automatic at end of frame readout

global_rst_end

global_read_start

SHUTTER (signal)

global_shutter_start

~2*line_length_pck

ERS

ROW RESET

INTEGRATION

READOUT

ERS

Trigger

Wait for end of

current row

Automatic at end

of frame readout

global_rst_end

FLASH

flash_count

(fixed)

global_read_start

SHUTTER

global_ shutter_start

~2*line_length_pck

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