Description of the data path
STINGRAY Technical Manual
V4.4.2
167
•
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 92:
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 48: Comparison of 3 transfer modes