RTL8111E
Datasheet
6.2.6. Customizable LED Configuration
The RTL8111E supports customizable LED operation modes via IO register offset 18h~19h. Table 11
describes the different LED actions.
Bit
15:12
11:8
7:4
3:0
Symbol
LEDCntl
LEDSEL3
LEDSEL1
LEDSEL0
Table 11.
RW
RW
RW
RW
RW
LED Select (IO Register Offset 18h~19h)
Description
LED Feature Control
LED Select for PINLED3
LED Select for PINLED1
LED Select for PINLED0
When implementing customized LEDs:
Configure IO register offset 18h~19h to support your own LED signals. For example, if the value in the
IO offset 0x18 is 0x0CA9h (0000110010101001b), the LED actions are:
• LED 0: On only in 10M mode, with blinking during TX/RX
• LED 1: On only in 100M mode, with blinking during TX/RX
• LED 3: On only in 1000M mode, with blinking during TX/RX
Table 12. Customized LEDs
Speed
LINK
ACT/Full
Link 10M
Link 100M
Link 1000M
LED 0
Bit 0
Bit 1
Bit 2
Bit 3
LED 1
Bit 4
Bit 5
Bit 6
Bit 7
LED 3
Feature Control
Bit 8
Bit 12
Bit 9
Bit 13
Bit 10
Bit 14
Bit 11
Bit 15
Note: There are two special modes:
LED OFF Mode: Set all bits to 0. All LED pin output become floating (power saving).
Fixed LED Mode: Set Option 1 LED table Mode: LED0=LED1=LED2=1 or 2 (see Table 13).
Bit31~Bit0 Value
1XXX 0001 0001 0001
1XXX 0010 0010 0010
Note: ‘X’ indicates ‘irrelevant’.
Table 13.
LED0
ACT
Transmit
Fixed LED Mode
LED1
LINK
LINK
LED2
Full Duplex + Collision
Receive
Integrated Gigabit Ethernet Controller for PCI Express
12
Track ID: JATR-2265-11 Rev. 1.1