User`s manual
Video Data Output Modes
Basler sprint Mono Cameras 97
5.2.2.1 Video Data Sequence for 4 Tap Modes
When the camera is not transmitting valid data, the line valid and data valid bits sent on each cycle
of the pixel clock will be low.
Once the camera has completed an exposure, there will be a delay while data is read out of the
sensor. When readout is complete, the camera will begin to transmit pixel data:
On the clock cycle where valid pixel data transmission begins, the line valid and data valid bits
both become high. Four data streams, D0, D1, D2, and D3 are transmitted in parallel during
this clock cycle. On this clock cycle, data stream D0 will transmit data for pixel 1 in the line.
Data stream D1 will transmit data for pixel 2. Data stream D2 will transmit data for pixel 3. And
data stream D3 will transmit data for pixel 4. Depending on the video data output mode
selected, the pixel data will be at either 12 bit, 10 bit, or 8 bit depth.
On the next cycle of the pixel clock, the line valid and data valid bits will both be high. On this
clock cycle, data stream D0 will transmit data for pixel 5 in the line. Data stream D1 will
transmit data for pixel 6. Data stream D2 will transmit data for pixel 7. And data stream D3 will
transmit data for pixel 8.
On the next cycle of the pixel clock, the line valid and data valid bits will be high. On this clock
cycle, data stream D0 will transmit data for pixel 9 in the line. Data stream D1 will transmit data
for pixel 10. Data stream D2 will transmit data for pixel 11. And data stream D3 will transmit
data for pixel 12.
This pattern will continue until all of the pixel data for the line has been transmitted.
After all of the pixel data for the line has been transmitted, the line valid and data valid bits both
become low indicating that valid pixel data is no longer being transmitted.
Figure 37 on page 100 shows the data sequence when the camera is operating in edge-controlled
or level-controlled exposure mode. Figure 38 on page 101 shows the data sequence when the
camera is operating in programmable exposure mode.