ALLIED Vision Technologies Stingray F-504 - Manual (Page 165)

Description of the data path
STINGRAY Technical Manual V4.4.4
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• Frame rate / transfer rate can be interrupted. This is shown in the dia-
gram below whenever FVal goes low after a reception of a new shutter
command while Sync was low.
• Shutter will be interrupted, if the update command is received while
camera integrates
• Delay from shutter update until change takes place is always 1 frame
(the delay is calculated from update command reception by FPGA and
not by microcontroller)
How to transfer parameters to the camera
The following 3 variants of transferring the parameters are available:
In the following you find a short description of each variant:
Figure 89: Quick Format Change Mode
Transfer mode Advantage

Disadvantage

Encapsulated Update (begin/
end)  easy to use (standard quad
writes in camera register is
possible)
 one write access per register
access
Parameter-List Update  only one write access for all
parameters
 fastest hostcamera transfer
(from 5 parameters on faster
than encapsulated mode)
 handling of parameter list
easy
 not so easy to use (block
writes)
 max. 64 entries for parameter
list
Standard Update (IIDC)
 compliant with IIDC V1.31  non deterministic change of
parameters
Table 47: Comparison of 3 transfer modes