AR0141CS datasheet(26/64 Pages) ONSEMI

26 / 64 page

AR0141CS/D Rev. 6, 4/16 EN

©Semiconductor Components Industries, LLC, 2016.

AR0141CS: 1/4-Inch Digital Image Sensor

Subsampling

The sensor will increment x and y addresses in multiples of 2. This indicates that a

GreenR and Red pixel pair will be read together. As well, that the sensor will read a Gr-R

row first followed by a B-Gb row.

(EQ 4)

(EQ 5)

A value of 1 is used for x_odd_inc and y_odd_inc when no pixel subsampling is indicated.

In this case, the sensor is incrementing x and y addresses by 1 + 1 so that it reads consec-

utive pixel and row pairs. To implement a 2x skip in the x direction, the x_odd_inc is set

to 3 so that the x address increment is 1+3, meaning that sensor will skip every other Gr-

R pair.

Note:

In skip2 the window size has to be a multiple of 4.

Table 11:

Configuration for Horizontal Subsampling

x_odd_inc

Restrictions

No subsampling

x_odd_inc = 1

skip = (1+1)*0.5 = 1x

The horizontal FOV must be programmed to

meet the following rule:

Skip 2x

x_odd_inc = 3

skip = (1+3)*0.5 = 2x

Analog Bin 2x

x_odd_inc = 3

skip = (1+3)*0.5 =2x

col_sf_bin_en = 1

Digital Bin 2x

x_odd_inc = 3

skip = (1+3)*0.5 =2x

col_bin =1

Table 12:

Configuration for Vertical Subsampling

y_odd_inc

Restrictions:

No subsampling

y_odd_inc = 1

skip = (1+1)*0.5 = 1x

row_bin = 0

The vertical FOV must be programmed to meet

the following rule:

Skip 2x

y_odd_inc = 3

skip = (1+3)*0.5 =2x

row_bin = 0

Analog Bin 2x

y_odd_inc = 3

skip = (1+3)*0.5 =2x

row_bin = 1

x subsampling factor

x_odd_inc

-----------------------------------

y subsampling factor

y_odd_inc

-----------------------------------

x_addr_end x_addr_start

–1

x_odd_inc 1

 2



-------------------------------------------------------------------------

even number

y_addr_end y_addr_start

–1

y_odd_inc 1

 2



-------------------------------------------------------------------------

even number

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