Camera interfaces
MARLIN Technical Manual
V2.4.0
52
Control and video data signals
The inputs and outputs of the camera can be configured by software. The dif-
ferent modes are described below.
Inputs
The optical coupler inverts all input signals. Polarity is controlled via the
IO_INP_CTRL1..2 register.
Triggers
All inputs configured as triggers are linked by AND. If two inputs are being
used as triggers, a high signal at the output of the block must be present on
all inputs in order to generate a trigger signal. The polarity for each signal
can be set separately via the inverting inputs. The camera must be set to
external triggering
to trigger image capture by the trigger signal.
Furthermore polarity of external triggering can be selected according to IIDC
V1.3x register 0xF0F00830.
Note
L
For a general description of the
inputs
and
warnings
see the
Hardware Installation Guide,
Chapter
MARLIN input descrip-
tion
.
Figure 25: Input block diagram
Input
Polarity
selectable
via software
Input state
Opto-
Coupler
Input signal
Trigger-
AND
Input 2, if set to trigger