Datasheet

RTL8169S-32/RTL8169S-64
Datasheet
Integrated Gigabit Ethernet Controller 15 Track ID: JATR-1076-21 Rev. 1.4
6.5.3. TX LED
In 10/100/1000Mbps mode, blinking of the Tx LED indicates that transmit activity is occurring.
Power On
Transmitting
Packet?
LED = High
LED = High for (100 +- 10) ms
LED = Low for (12 +- 2) ms
No
Yes
Figure 4. TX LED