Receiver pinout information

1

USB_ID

Input

Provides distinction between USB host mode and device mode

Host mode = Connect to ground.
Device mode = Keep floating (not connected).

2

USB_VBUS

Output

USB power output. For host mode only.

5 V output to power USB devices. Enabled by USB_ID.

3

BOOT_MON

Input

Boot mode selection.

Active low. Leave unconnected if not used.

4

VOUT

Power

3.3 V power output. Should be connected to the center tap of the ethernet magnetics.

3.3 V.

5

NC

NC

6

LINE_POWER

Power

Supply voltage input.

3.3 V ±5 % supply voltage.

7

USBDM

I/O

USB data-.

One of USB differential pairs, should be routed as a 90-ohm differential pair if USB is used. Please use same length of wires for differential pair wires.

8

USBDP / COM4RX

I/O

USB data+ / COM4 (UART) receive signal.

This is a multiplexed pin. The default value is USBDP.

USBDP: One of USB differential pairs, should be routed as a 90-ohm differential pair if USB is used. Please use same length of wires for differential pair wires.
COM4TX: COM4(UART) Receive signal. LVTTL. 3.3 V level.

9

NRESET_IN

Input

Reset input.

Active low. 0 V = held in reset. Leave unconnected if not used.

10

Power LED / CAN2RX

Output / Input

Corrections LED / CAN2 receive signal.

This is a multiplexed pin. The default value is LED driver for corrections. Active high 3.3 V.

CAN2RX: CAN2 receive signal. 3.3 V level.

11

Power LED / CAN2TX / EVENT2

Input / Output / Input

MFO2-Power LED / CAN2 transmit signal / Event Input1.

This is a multiplexed pin. The default value is LED driver for power. Active high 3.3 V.

CAN2TX: CAN2 transmit signal. 3.3 V level.
EVENT2: LVTTL. 3.3 V level. Includes pull-down 10-kohm resistor. Pulse width equal or greater than 500 ns.

12

COM3RX / CAN1RX

Input

COM3 (UART) receive signal / CAN1 receive signal.

This is a multiplexed pin. The default value is COM3RX.

COM3RX: COM3(UART) receive signal. LVTTL. 3.3 V level.
CAN1RX: CAN1 receive signal. 3.3 V level.

13

COM4TX / EVENT1

Output / Input

COM4 (UART) transmit signal / Event Input1.

This is a multiplexed pin. The default value is EVENT1.

EVENT1: LVTTL. 3.3 V level. Includes pull-down 10-kohm resistor. Pulse width equal or greater than 500 ns.
COM4TX: COM4(UART) transmit signal. LVTTL. 3.3 V level.

14

GND

Power

Signal and power ground.

15

COM1_TX

Output

COM1 (UART) transmit signal.

LVTTL. 3.3 V level.

16

COM1_RX

Input

COM1 (UART) receive signal.

LVTTL. 3.3 V level.

17

GND

Power

Signal and power ground.

18

COM2_TX

Output

COM2 (UART) transmit signal.

LVTTL. 3.3 V level.

19

COM2_RX

Input

COM2 (UART) receive signal.

LVTTL. 3.3 V level.

20

GND

Power

Signal and power ground.

21

SV_LED

Output

Tracking-position valid LED.

LED driver for tracking SVs. Active high 3.3 V.

22

GND

Power

Signal and power ground.

23

PPS

Output

PPS output

LVTTL. 3.3 V level.

24

COM3TX / CAN1TX

Output

COM3 (UART) transmit signal / CAN1 transmit signal.

This is a multiplexed pin. The default value is COM3TX.

COM3TX: COM3(UART) transmit signal. LVTTL. 3.3 V level.
CAN1TX: CAN1 transmit signal. 3.3 V level.

25

ET_TD+

Output

Ethernet twisted pair output+

To be connected to the Ethernet magnetics TD+. Should be differentially routed with ET_TD-.

26

ET_RD+

Input

Ethernet twisted pair input+

To be connected to the Ethernet magnetics RD+. Should be differentially routed with ET_RD-.

27

ET_TD-

Output

Ethernet twisted pair output-

To be connected to the Ethernet magnetics TD-. Should be differentially routed with ET_TD+.

28

ET_RD-

Input

Ethernet twisted pair input-

To be connected to the Ethernet magnetics RD-. Should be differentially routed with ET_RD+.