Camera interfaces
MARLIN Technical Manual
V2.4.0
62
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The video data for each pixel are output in either 8-bit or 10-bit format.
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Each pixel has a range of 256 or 1024 shades of gray.
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The digital value 0 is black and 255 or 1023 is white. In 16-bit mode
the data output is MSB aligned.
The following table provides a description of the video data format for the
different modes. (Source: IIDC V1.3 specification)
Field
Description
data_length
Number of bytes in the data field
tg
Tag field
shall be set to zero
channel
Isochronous channel number
, as programmed in the iso_channel
field of the cam_sta_ctrl register
tCode
Transaction code
shall be set to the isochronous data block packet tCode
sy
Synchronization value (sync bit)
This is one single bit. It indicates the start of a new frame.
It shall be set to 0001h on the first isochronous data block of a frame,
and shall be set to zero on all other isochronous blocks
Video data payload
Shall contain the digital video information
Table 26: Description of data block packet format
Figure 29: YUV422 and YUV411 format: Source: IIDC V1.3