Led 0 And 2 Configuration Defaults (Word 18H); Future Initialization Word 1 (Words 19H) - Intel ICH9 Information Manual

1.4.18

LED 0 and 2 Configuration Defaults (Word 18h)

This NVM word specifies the hardware defaults for the LEDCTL register fields controlling
the LED0 (LINK_UP; LINK/ACTIVITY for ICH9) and LED2 (LINK_100) output behaviors.
Table 16.

LED 0 and 2 Configuration Defaults (Word 18h)

Bit
15 LED2 Blink
14 LED2 Invert
13 LED2 Blink Mode
12 Reserved
11:8 LED2 Mode
7 LED0 Blink
6 LED0 Invert
5 LED0 Blink Mode
4 Reserved
3:0 LED0 Mode
Table 15, "LED Modes"
word.
1.4.19

Future Initialization Word 1 (Words 19h)

Bit
15:0
18
Name Default
0b
0b
0b
0b
0110b
1b
0b
0b
0b
0100b
above summarizes the LED modes defined in bits 3:0 of this
Name Default
Reserved
NVM Information Guide—ICH8/ICH9
Description
This bit indicates the initial value of the LED2_BLINK field.
0b = LED2 is non-blinking.
1b = LED2 is blinking.
This bit indicates the initial value of the LED2_IVRT field.
0b = LED2 has an active low output.
1b = LED2 has an active high output.
This bit defines the LED2 blink mode:
0b = Blink at 200 ms on and 200 ms off (slow rate for ICH9).
1b = Blink at 83 ms on and 83 ms off (fast rate for ICH9).
For ICH8, this field should be identical to the LED0 Blink Mode.
This bit is reserved and should be set to 0b.
These bits represent the initial value of the LED2_MODE field,
which specifies the event, state, or pattern displayed on LED2
(LINK_100) output. A value of 0110b causes this to indicate 100
Mb/s operation.
This bit indicates the initial value of the LED0_BLINK field.
0b = LED0 is non-blinking (recommended).
1b = LED0 is blinking.
This bit indicates the initial value of the LED0_IVRT field.
0b = LED0 has an active low output.
1b = LED0 has an active high output.
This bit define the LED0 blink mode:
0b = Blink at 200 ms on and 200 ms off (slow rate for ICH9).
1b = Blink at 83 ms on and 83 ms off (fast rate for ICH9).
For ICH8, this field initializes the GLOBAL_BLINK_MODE field in
the LEDCTL register.
This bit is reserved and should be set to 0b.
These bits represent the initial value of the LED0_MODE field,
which specifies the event, state, or pattern displayed on LED0
(Link/Activity; LINK_UP/Activity for ICH9) output.
the values for LED0 Mode.
Description
Reserved
This field is loaded to bits 15:0 of the FEXTNVM register.
For the 82562V, must be set to 301h.
For 82566 SKUs that include ACBS, must be set to 181h.
For 82566 SKUs without ACBS, must be set to 101h.
For the 82567, must be set to TBDF.
Table 15 defines