PL-D Board-Level Interface : Pixelink Support

PL-D board-level cameras provide a GPIO interface through an 8-pin 1.25mm Molex connector and a powered I2C interface through a 6-pin 1mm JST connector located on the USB3.0 board. The mating connector for the GPIO interface is a Molex 51021-0800 receptacle with Molex 50079-8100 wire crimp terminals and the mating connector for the powered I2C interface is a JST SHR-06V-S-B receptacle with JST SSH-003T-P0.2 wire crimp terminals.

GPIO Interface Pinout and Description

Pin	Pin Name	Function	Comments
1	3.3V	+3.3 VDC power output	Maximum current available from this pin is 50mA. Maximum external capacitive load on this pin is 50uF.
2	TRIGGER or GPI	TRIGGER input General Purpose Input	3.3V HCMOS input with an internal 1K ohm pull up resistor. A voltage transition from 3.3V to 0V will initiate a positive trigger. Pixelink API-Refer to the functions PxLSetFeature, PxLGetFeature, Trigger Types , and GPIO Modes.
3	GROUND	Logic and chassis ground	0V reference.
4	GPO1	General Purpose Output 1	3.3V HCMOS outputs. Maximum current 5mA. Pixelink API-Refer to the functions PxLSetFeature, PxLGetFeature, and GPIO Modes.
5	GPO2	General Purpose Output 2	3.3V HCMOS outputs. Maximum current 5mA. Pixelink API-Refer to the functions PxLSetFeature, PxLGetFeature, and GPIO Modes.
6	CLOCK	I2C Clock	Both have an internal 1.5K ohm pull up resistor to 3.3V. Pixelink API-Refer to I2C Bus Communications.
7	DATA	I2C Data	Both have an internal 1.5K ohm pull up resistor to 3.3V. Pixelink API-Refer to I2C Bus Communications.
8	n/c	No connection

Notes

Trigger pulse duration must be at least 300 us, otherwise trigger pulses might be ignored.
Pin 2 can be used as Trigger or GPI. For Trigger and GPI implementation, review the Trigger and the General Purpose Input Output articles respectively.
If Pin 2 is used as GPI, only GPIO with the index 1 can be configured for reading and returning a GPI status value.
Pin 4 and Pin 5 cannot be used or modified for additional I2C communication interface.

Trigger Polarity

The trigger polarity can be set to Positive or Negative. (See the Triggers and GPO Tab - Pixelink Capture or External Control Tab - Capture OEM)
With the trigger polarity set to Positive, a camera will trigger on the falling edge of the trigger signal.
With the trigger polarity set to Negative, a camera will trigger on the rising edge of the trigger signal.

Powered I2C Interface Pinout and Description

Pin	Pin Name	Function	Comments
1	VBUS	Power output from USB3 cable, shared with camera, typically +5 VDC	Actual voltage level depends on the computer, cable length, and total current load. The maximum current available from this output pin is 100mA.
2	GROUND	Logic and chassis ground	0V reference.
3	DATA	I2C Data	Both have an internal 1.5K ohm pull up resistor to 3.3V.
4	CLOCK	I2C Clock	Both have an internal 1.5K ohm pull up resistor to 3.3V.
5	n/c	No connection
6	n/c	No connection

Notes

Pin 3 and Pin 4 are interconnected with Pin 6 and Pin 7 of the 8-pin Molex connector. Thus, only one I2C communication interface can be used.

PL-D Board-Level Interface

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