Pike Technical Manual
V5.2.0
122
Camera interfaces
•
The video data for each pixel are output in either 8-bit or 14-bit format
(
Packed 12-Bit Mode
: 12-bit format).
•
Each pixel has a range of 256 or 16384 (
Packed 12-Bit Mode
: 4096)
shades of gray.
•
The digital value 0 is black and 255 or 16383 (
Packed 12-Bit Mode
: 4095)
is white. In 16-bit mode the data output is MSB aligned.
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 34: Description of data block packet format