Intel Gigabit Ethernet Controllers Benutzerhandbuch

286

The 

 lists the MODE encodings used to select the desired LED signal source for each 

LED output. Refer to 

 to ensure proper understanding of expression polarity and 

resulting LED output polarity.

All 16 modes listed are functional.

LED0_MODE

3:0

0010b

1

1.

These bits are read from the EEPROM.

LED0/LINK# Mode. This field specifies the control source for the 
LED0 output. An initial value of 0010b selects LINK_UP# indication.

Reserved

5:4

00b

Reserved.   Read-only as 0b. Write as 0b for future compatibility.

LED0_IVRT

6

0b

1

LED0/LINK# Invert. This field specifies the polarity/ inversion of the 
LED source prior to output or blink control. 
0b = do not invert LED source.
1b = invert LED source.

LED0_BLINK

7

0b

1

LED0/LINK# Blink. This field specifies whether to apply blink logic to 
the (possibly inverted) LED control source prior to the LED output.
0b = do not blink asserted LED output.
1b = blink asserted LED output.

LED1_MODE

11:8

0011b

LED1/ACTIVITY# Mode. This field specifies the control source for the 
LED1 output. An initial value of 0011b selects ACTIVITY# indication.

Reserved

13:12

00b

Reserved.   Read-only as 0b. Write as 0b for future compatibility.

LED1_IVRT

14

0b

LED1/ACTIVITY# Invert. 

LED1_BLINK

15

1b

LED2_MODE

19:16

0110b

1

LED2/LINK100# Mode. This field specifies the control source for the 
LED2 output. An initial value of 0011b selects LINK100# indication.

Reserved

21:20

00b

Reserved.   Read-only as 0b. Write as 0b for future compatibility.

LED2_IVRT

22

0b

1

LED2/LINK100# Invert. 

LED2_BLINK

23

0b

1

LED3_MODE

27:24

0111b

LED3/LINK1000# Mode. This field specifies the control source for the 
LED3 output. An initial value of 0111b selects LINK1000# indication.

Reserved

29:28

00b

Reserved.   Read-only as 0b. Write as 0b for future compatibility.

LED3_IVRT

30

0b

LED3/LINK1000# Invert. 

LED3_BLINK

31

0b

1.

Not applicable to the 82544GC/EI.