AS0260CSSC28SUD20 datasheet(43/83 Pages) ONSEMI

43 / 83 page

AS0260 DS Rev. G Pub. 5/15 EN

©Semiconductor Components Industries, LLC, 2015.

AS0260: 1/6-Inch 1080P High-Definition (HD) System-On-A-Chip (SOC) Digi-

tal Image Sensor

JPEG Continuous Stream

JPEG continuous stream goes out only through the parallel output interface, and

supports the following features:

•Duplicate FV on LV

• Append JPEG status segment at the end of the data stream

When enabled, the pixel clock output can be generated continuously during invalid data

periods (between FV and between LV). In this streaming mode, the amount of valid data

within each line (LV = 1) is variable. Figure 28 through Figure 29 on page 39 are examples

of the JPEG stream through the parallel output interface.

Figure 28 illustrates data output when the pixel clock output is generated continuously

during invalid data periods. LV is of variable length based on data output rate.

In default mode, data transitions on the falling edge of PIXCLK and the host must

capture data on the rising edge of PIXCLK. The PIXCLK is also configurable and its

polarity can be reversed through the use of register settings.

Figure 28:

JPEG Continuous Data Output

JPEG Spoof Stream

The JPEG compressed data can be output in spoof mode. The amount of expected pixel

data is defined by the spoof width and spoof height registers. If the valid JPEG data is less

than expected size defined, a dummy data pattern with a value of 0xFF will be padded.

There is an option to ignore spoof height so dummy data padding is limited to less than

one spoof line.

When enabled, the pixel clock output can be generated continuously during invalid data

periods (between FV and between LV). In spoof streaming mode, the amount of valid

data within each line (LV = 1) is constant.

Figure 29 illustrates the JPEG spoof output when pixel clock is generated continuously

during invalid data periods between LV. The status segment is inserted at the end of the

stream.

PIXCLK

DOUT[7:0]

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