Datasheet

RTL8169S-32/RTL8169S-64
Datasheet
Integrated Gigabit Ethernet Controller 14 Track ID: JATR-1076-21 Rev. 1.4
6.5. LEDs
The RTL8169S supports four LED signals in four different configurable operation modes. The modes are shown in Pin
Descriptions, page 5.
6.5.1. Link Monitor
The Link Monitor senses a link, such as LINK10, LINK100, LINK1000, LINK10/100/1000. Whenever a link is established,
the specific link LED pin is driven low. Once disconnected, the link LED pin is driven high indicating that no network
connection exists.
6.5.2. RX LED
In 10/100/1000Mbps mode, blinking of the Rx LED indicates that receive activity is occurring.
Power On
Receiving
Packet?
LED = High
LED = High for (100 +- 10) ms
LED = Low for (12 +- 2) ms
No
Yes
Figure 3. RX LED