Basler aviator Camera Link Manual page 18

Pixel Data Output
Pixel Data Transmission Sequence with the 1X-1Y Tap Geometry
When the camera is not transmitting valid data, the frame valid, line valid, and data valid bits sent
on each cycle of the pixel clock will be low. Once the camera has acquired an image and has read
the pixel data out of the imaging sensor, it will begin transmitting the data (see Figure 3):
(1) - (2):

On the pixel clock cycle where frame data transmission begins, the frame valid bit will become
high.
End of
Exposure
A
Frame
Valid
B
Line
Valid
Data
Valid
(1) (2)
Pixel
Clock
D0
Pixel Data 1
(12, 10,or 8 bits)
TIMING DIAGRAMS ARE NOT DRAWN TO SCALE.
H = height = the last line in the image (e.g., line 1024 on a camera with the AOI set to 1024 x 1024)
W = width = the last pixel in the line (e.g., pixel 1024 on a camera with the AOI set to 1024 x 1024)
A - F: see next page
Fig. 3: Pixel Data Output Timing for the 1X-1Y Tap Geometry
(2) - (3):
Two pixel clock cycles later, the line valid and data valid bits will become high and data

transmission for line one begins.
One data stream, D0, is transmitted during this clock cycle. On this clock cycle, data stream D0
will transmit data for pixel 1 in line 1. Depending on the pixel format selected, the pixel data
will be at 12, 10, or 8 bit depth.
On the next pixel clock cycle, the line valid and data valid bits will still be high. On this clock

cycle, data stream D0 will transmit data for pixel 2 in line 1.
On the next pixel clock cycle, the line valid and data valid bits will still be high. On this clock

cycle, data stream D0 will transmit data for pixel 3 in line 1.
This pattern will continue until all of the pixel data for line 1 have been transmitted.

12
C
Line 1
(3)
2 W-1 W
F
D
Line 2
(4)
1 2 W-1 W
AW00083108000
E
Line H
1 2 W-1 W
Basler aviator Camera Link