– Copied from a customer email –
For the LED header, we don’t know how the D1 to D8 should be connected. Is D1 and D2 belonging to Ethernet port 1, and D3 and D4 to Port 2 and so on or how is this connected?
There are 8 individual LED lines on GigaBlox Rugged’s LED breakout header. This means that each port has two LED lines associated with it.
The schematic snipped below should help clear this up.
The LEDs blink to show link activity, and their combined colour shows the link speed.
1000Mbps = Red LED
100Mbps = Orange LED
10Mbps = Green LED
Port 1:
1000Mbps activity
Only EX_LED_2 will blink
100Mbps activity
EX_LED_1 and EX_LED_2 will blink
10Mbps activity
Only EX_LED_1 will blink
Port 2:
1000Mbps activity
Only EX_LED_4 will blink
100Mbps activity
EX_LED_3 and EX_LED_4 will blink
10Mbps activity
Only EX_LED_3 will blink
Port 3:
1000Mbps activity
Only EX_LED_6 will blink
100Mbps activity
EX_LED_5 and EX_LED_6 will blink
10Mbps activity
Only EX_LED_5 will blink
Port 4:
1000Mbps activity
Only EX_LED_8 will blink
100Mbps activity
EX_LED_7 and EX_LED_8 will blink
10Mbps activity
Only EX_LED_7 will blink
Thus, based on this, you should wire your external LEDs accordingly. You should use a 500R to 1Kohm external resistor in series with your external LED.