What is the port mapping of the port activity indicator breakout on GigaBlox Rugged?

– Copied from support ticket –

Hi, we are currently integrating the GigaBlox Rugged into one of our products and require clarification on two issues regarding the Port Activity LEDs.

  1. LED-to-Port Mapping We could not find a mapping table in the datasheet. Based on our hardware tests, the LEDs appear to be “inverted” relative to the physical port positions. Could you please confirm if the following mapping is correct?

Port 1 (J4) → LED D14

Port 2 (J6) → LED D15

Port 3 (J5) → LED D16

Port 4 (J3) → LED D17

  1. LED Color Logic and Link Speed The June 2025 datasheet states that LEDs should blink Orange for 1000 Mbps and Red for 100 Mbps. However, we are seeing the following behavior:

4-wire connection: The LED blinks Green.

8-wire connection: The LED blinks Red.

Could you clarify the exact color-to-speed mapping? Specifically, we would like to confirm if Green/Red/Orange reflects the link speed (10/100/1000) or if there has been a change in the LED specifications.

D14: Port 1 LED
D15: Port 2 LED
D16: Port 3 LED
D17: Port 4 LED

On the LED breakout header:

  • Note that all LEDs are dual colour (red/green) LEDs, so each LED actually contains two individual LEDs, red and green, and thus there are two driving signals for each channel)
  • All LEDs share the same 3.3V anode connection which is exposed on the breakout header. The cathodes (connection to ground) are exposed on the breakout header).

Pin 1 = 3.3V common anode
Pin 2 = D17 (port 4) LED, red channel
Pin 3 = D17 (port 4) LED, green channel
Pin 4 = D16 (port 3) LED, red channel
Pin 5 = D16 (port 3) LED, green channel
Pin 6 = D15 (port 2) LED, red channel
Pin 7 = D15 (port 2) LED, green channel
Pin 8 = D14 (port 1) LED, red channel
Pin 9 = D14 (port 1) LED, green channel

For the LED colours, let us check that and get back to you.

On the port colours.

1000M: red
10/100M: green