Instruction manual

Camera interfaces

MARLIN Technical Manua

Page 29

Triggers

All inputs configured as triggers are linked by AND. If several inputs are being used as triggers, a

high signal 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.

All input and output signals running over the HiRose plug are controlled by an advanced feature

Offset Name Field Bit Description

0xF1000300 IO_INP_CTRL1 Presence_Inq [0] Indicates presence

of this feature

(read only)

--- [1..6]

Polarity [7] 0: low active, 1:

high active

--- [8..10]

InputMode [11..15] Mode

--- [16..30]

PinState [31] RD: Current state

of pin

0xF1000304 IO_INP_CTRL2 Same as

IO_INP_CTRL1

Table 16: Input configuration register

IO_INP_CTRL 1-2

The Polarity flag determines whether the input is low active (0) or high active (1). The input

mode can be seen in the following table. The PinState flag is used to query the current status of

the input.

For inputs the PinState bit refers to the inverted output side of the optical coupler. This signals

that an open input sets the PinState bit to “1”.

ID Mode

Default

0x00

Off

0x01 reserved

0x02 Trigger input Input 1

0x03 reserved

0x04 reserved

0x05 tbd (SPI external DCLK)

0x06..0x0F reserved

0x10..0x1F reserved

Table 17: Input routing