Basler A500k User Manual page 36

Camera Interface
stream, and so on. The tenth D_9 data stream contains the thirtieth pixel. 8 bits will contain
the data for each pixel.
• This pattern will continue until all of the pixel data for each data stream for line one has been
transmitted. (A total of 128 cycles for the A504
• Line valid becomes low for four pixel clocks.
• On the pixel clock cycle where data transmission for line two begins, the line valid bit will
become high. Ten data streams are transmitted in parallel during this clock cycle. In each
data stream, 8 bits will contain the data for the first, second, third ... tenth pixel of line number
two.
• On the next cycle of the pixel clock, the line valid bit will be high. Ten data streams are trans-
mitted in parallel during this clock cycle. In each data stream, 8 bits will contain the data for
the eleventh, twelfth, thirteenth ... twentieth pixel of line number two.
• On the next cycle of the pixel clock, the line valid bit will be high. Ten data streams are trans-
mitted in parallel during this clock cycle. In each data stream, 8 bits will contain the data for
the twenty first, twenty second, twenty third ... thirtieth pixel of line number two.
• This pattern will continue until all of the pixel data for each data stream for line two has been
transmitted. (A total of 128 cycles.)
• After all of the pixels in line two have been transmitted, the line valid bit will become low for
four cycles indicating that valid data for line two is no longer being transmitted.
• The camera will continue to transmit pixel data for each line as described above until all of
the lines in the frame have been transmitted. After all of the lines have been transmitted, the
frame valid bit will become low at the same time as line valid indicating that a valid frame is
no longer being transmitted.
• Frame valid will remain low for at least 3 pixel clock cycles until the next frame starts.
Figure 2-8 shows the data sequence when the camera is operating in edge-controlled or level-
controlled exposure mode and Figure 2-9 shows the data sequence when the camera is operating
in programmable exposure mode.
2-22
PRELIMINARY
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Basler A500