CYIL2SM1300-EVAL View Datasheet(PDF) - ON Semiconductor

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CYIL2SM1300-EVAL

LUPA 1300-2: High Speed CMOS Image Sensor

ON Semiconductor 

CYIL2SM1300AA

Master Mode

In this mode, a rising edge on int_time1 pin is used to trigger the

start of integration and read out. The tint_timer defines the

integration time independent of the assertion of the input pin

int_time1. After the integration time counter runs out, the FOT

automatically starts and the image readout is done. During

readout, the image array is kept in reset. A request for a new

frame is started again when a new rising edge on int_time is

detected. The time of the falling edge is not important in this

mode.

Slave Mode

Integration time control is identical to the pipelined shutter slave

mode. The int_time1 pin controls the start of integration. When

int_time is deasserted, the FOT starts (analog value on the pixel

diode is transferred to the pixel memory element). Only at that

time, image read out can start (similar to the pipelined read out).

During read out, the image array is kept in reset. A request for a

new frame is started when int_time goes high again.

Windowing

A fully configurable window can be selected for readout.

Figure 16. Window Selected for Readout

y start

y_end

1024 pixels

x kernel

x start

1280 pixels

The parameters to configure this window are:

x_start. The sensor reads out 24 pixels in one single clock cycle.

The granularity of configuring the X start position is also 24.

Every value written to the windowX_2 register must be multiplied

by 24 to find the corresponding column in the pixel array.

x_kernels. The number of columns that is read out

(x_kernels*24 in full frame mode) in subsampling mode

x_kernels*48 represents the number of columns over which

subsampling is done. The x_kernels value must be written to the

windowX_4 register.

y_start. The starting line of the readout window, granularity of 1.

Note that in subsample mode, the correct y_start position must

be uploaded (exact value depends on color or B/W subsampling

mode). This value must be written to the windowX_1 and

windowx_2 register.

y_end. The end line of the readout window, granularity of 1. In

all cases (even in reverse scan), y_end are larger than y_start.

Note that in subsample mode, the correct y_end position must

be uploaded (exact value depends on color or B/W subsampling

mode). This value must be written to the windowX_3 and

windowX_4 register.

In case of windowing, the effective readout time is smaller than

in full frame mode, because only the relevant part of the image

array is accessed. As a result, it is possible to achieve higher

frame rates.

Document Number: 001-24599 Rev. *C

Page 21 of 41

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