AR0141CS datasheet(22/48 Pages) ONSEMI

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AR0141CS

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Figure 25. Frame Period Measured in Clocks

Row Period (TROW)

line_length_pck will determine the number of clock

periods per row and the row period (TROW) when combined

with the sensor readout clock. line_length_pck includes both

the active pixels and the horizontal blanking time per row.

The sensor utilizes two readout paths, as seen in Figure 1,

allowing the sensor to output two pixels during each pixel

clock.

Row Periods Per Frame

frame_length_lines determines the number of row periods

(TROW) per frame. This includes both the active and

blanking rows. The minimum vertical blanking value is

defined by the number of OB rows read per frame, two

embedded data rows, and two blank rows.

(eq. 8)

Minimumframe_length_lines +

y_addr_end–y_addr_start ) 1

(y_odd_inc ) 1) 2

) min_vertical_blanking

The sensor is configured to output frame information in

two embedded data rows by setting R0x3064[8] to 1

(default). If R0x3064[8] is set to 0, the sensor will instead

output two blank rows. The data configured in the two

embedded rows is defined in two embedded rows of data at

the top of the frame by setting R0x3064[7] and two rows of

embedded statistics at the end of the frame by setting

R0x3064[7] for exposure calculations. See the section on

Embedded Data and Statistics.

Table 13. MINIMUM VERTICAL BLANKING CONFIGURATION

R0x3180[7:4]

OB Rows

min_vertical_blanking

0x8 (Default)

8 OB Rows

8 OB + 8 = 16

0x4

4 OB Rows

4 OB + 8 = 12

0x2

2 OB Rows

2 OB + 8 = 10

The locations of the OB rows, embedded rows, and blank

rows within the frame readout are identified in Figure 26:

“Slave Mode Active State and Vertical Blanking,”.

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