Description-Overview of the Pi-Tron REV004 Demoboard

Serial Interfaces

You need an additional adapter to translate the 3.3V-UART signals (provided on the Mini-USB port) to USB.

Pi-Tron	Used as	Accessible via	Connector
uart0	Console; TTL; RS485	`/dev/ttyAMA0` `/dev/serial0`	X800
uart1	Console; TTL; RS485; RS232	`/dev/ttyS0` `/dev/serial1`	X900

Note: The serial device uart0 (ttyAMA0) is the primary UART of the CM3+, this is the full featured serial port. The serial device uart1 (ttyS0) is the secondary UART of the CM3+ and is connected to the mini-UART serial device. Which is a serial port with reduced functionality. See the official Raspberry Pi documentation for the more information. The Pi-Tron CM3+ UARTs cannot be switched between RS232 and RS485.

IOs

Four digital inputs/outputs (either or) are available. If used as output the state can be read back from the associated input.
The table below shows number and function of available GPIOs.

The Input/Output Voltage are coupled with the Power-Supply-Voltage. Normaly 24V. The maximum output current of each Port is 500mA depending on the power supply. On the Inputs all values over 6V are high and all values under 4V are low.

Name	direction	Accessible via	Connector
dout1	output	`GPIO44`	X19_DIO1
din1	input	`GPIO45`	X19_DIO1
dout2	output	`GPIO35`	X19_DIO2
din2	input	`GPIO43`	X19_DIO2
dout3	output	`GPIO34`	X19_DIO3
din3	input	`GPIO31`	X19_DIO3
dout4	output	`GPIO29`	X19_DIO4
din4	input	`GPIO28`	X19_DIO4

Display Interfaces

The Pi-Tron has a HDMI-Interface with an micro-HDMI-Connector. Also there can be used the 40Pol-Header as RGB-Interface.

Ethernet

Name	Connector	Linux device
Ethernet 1	X600	eth0
Ethernet 2	X700	eth1

USB

The connector X601 is including the two USB ports "top" and "bottom". Both ports are configured as USB Host.

Appendix

Part number for the Mating connectors

Name	Connector	Manufacturer		Ord.No.
Power-connector	X3	PHOENIX CONTACT	FMC 1,5/ 2-ST-3,5 BK	18 26 68 0
RS232-connector	X15	PHOENIX CONTACT	DFMC 0,5/ 4-ST-2,54	18 44 59 4
RS485/CAN-connector	X18	PHOENIX CONTACT	DFMC 0,5/ 4-ST-2,54	18 44 59 4
DIO-connector	X19	PHOENIX CONTACT	DFMC 0,5/ 4-ST-2,54	18 44 59 4
micro-HDMI-connector	X500		Typ D