Pinout information

1

PGND

Power supply ground. Max current 0.5 A. Do not connect to SIG_GND or USB_GND.

2

EXT_PWR_IN

Power supply input 9 to 30 V referenced to PGND. Max current 0.5 A steady state.

3

PPS_OUT

Pulse per second output. 8 us pulse configurable as positive or negative.

4

RJ45_NC5

Connect to unused RJ45 pin 5 for proper termination.

5

RJ45_NC8

Connect to unused RJ45 pin 8 for proper termination.

6

ET_TD+

Ethernet transmit+. ET_TD+ and ET_TD- differential 100 ohm. Connect to RJ45 pin 1.

7

ET_TD-

Ethernet transmit-. ET_TD+ and ET_TD- differential 100 ohm. Connect to RJ45 pin 2.

8

EVENT_IN

Event input. 3.3 V logic level but tolerant to 10 V.

9

SIG_GND

Ground reference for all digital signals except USB. Do not connect to PGND or USB_GND. Can be connected to other SIG_GND pins.

10

RJ45_NC4

Connect to unused RJ45 pin 4 for proper termination.

11

RJ45_NC7

Connect to unused RJ45 pin 7 for proper termination.

12

ET_RD+

Ethernet receive+. ET_RD+ and ET_RD- differential 100 ohm. Connect to RJ45 pin 3.

13

ET_RD-

Ethernet receive-. ET_RD+ and ET_RD- differential 100 ohm. Connect to RJ45 pin 6.

14

UART_TX_RS232

COM44 RS-232 transmit output. Max 115 k baud.

15

UART_RX_RS232

COM44 RS-232 receive input. Max 115 k baud.

16

SIG_GND

Ground reference for all digital signals except USB. Do not connect to PGND or USB_GND. Can be connected to other SIG_GND pins.

17

UART2_TX_RS232

COM1 RS-232 transmit output. Max 460 k baud.

18

UART2_RX_RS232

COM1 RS-232 receive input. Max 460 k baud.

19

USB_GND

Ground reference for USB. Do not connect to SIG_GND or PGND.

20

CAN_H

CAN_H and CAN_L differential with configurable 120 ohm resistor on-board. 500 kbit/s.

21

CAN_L

CAN_H and CAN_L differential with configurable 120 ohm resistor on-board. 500 kbit/s.

22

SIG_GND

Ground reference for all digital signals except USB. Do not connect to PGND or USB_GND. Can be connected to other SIG_GND pins.

23

Reserved

–

24

BOOT_MON

Boot monitor pin. If this pin is grounded on power-up, then the system will boot into monitor mode.

25

USB_DP

USB_DP and USB_DM differential 90 ohm. High-speed bus. Device only.

26

USB_DM

USB_DP and USB_DM differential 90 ohm. High-speed bus. Device only.