Datasheet

RTL8169S-32/RTL8169S-64
Datasheet
Integrated Gigabit Ethernet Controller 17 Track ID: JATR-1076-21 Rev. 1.4
6.5.5. LINK/ACT LED
In 10/100/1000Mbps mode, blinking of the LINK/ACT LED indicates that the RTL8169S is linked and operating properly.
When this LED is high for extended periods, it indicates that a link problem exists.
Power On
Link?
LED = High
LED = Low
LED = Low for (12 +- 2) ms
No
Yes
Tx/Rx packet?
Yes
No
LED = High for (100 +- 10) ms
Figure 6. LINK/ACT LED
6.6. Flash/EEPROM Interface
The Flash interface consists of address bus MA(16:0) and data bus MD(7:0) which share the pin with PCI interface AD(16:0)
and AD(32:24), respectively. It also consists of several control signals: WEB, OEB(LED0), CSB(EECS). The RTL8169S
supports the attachment of an external EEPROM. The 93C46 is a 1K-bit EEPROM (the 93C56 is a 2K-bit EEPROM).
The EEPROM interface provides the ability for the RTL8169S to read from and write data to an external serial EEPROM
device. Values in the external EEPROM allow default fields in PCI configuration space and I/O space to be overridden
following a reboot or software EEPROM auto load command. The RTL8169S will auto load values from the EEPROM. If the
EEPROM is not present, the RTL8169S initialization uses default values for the appropriate Configuration and Operational