Register Descriptions

Table 13-45. SPEED_100_LED and SPEED_1000_LED Bit Description

 

 

Disable the SPEED_1000_LED

 

 

 

 

 

Extension Logic.

 

 

 

 

 

0b = Enable logic.

 

 

 

LED Stretch Disable

11

1b = Disable logic.

R/W

1b

1b

Note: Only when both the stretch and

 

 

 

 

 

 

 

blink are disabled the input bypasses

 

 

 

 

 

the blink logic and is muxed out with no

 

 

 

 

 

sampling (only combinational logic).

 

 

 

 

 

 

 

 

 

Reserved

15:12

Always read as 0b. Write to 0b for

R/W

00b

00b

normal operation

 

 

 

 

 

 

 

 

 

 

 

13.4.7.1.22PHY LED Control Register (82544GC/EI Only) PLED (24d; R/W)

Table 13-46. PHY LED Control Bit Description

Field

Bit(s)

 

 

Description

Mode

HW Rst

SW Rst

 

 

 

 

 

 

 

LED_TX control

0

1b

= Activity/Link.

R/W

0b

Retain

0b

= Transmit activity.

 

 

 

 

 

 

 

 

 

 

 

 

LED_RX control

1

1b

= Receive activity/Link.

R/W

0b

Retain

0b

= Receive activity.

 

 

 

 

 

 

 

 

 

 

 

Reserved

2

Reserved. Should be set to 0b.

R/W

0b

Retain

 

 

 

 

 

 

 

 

1xb = Link[2:1], Link.

 

 

 

LED_LINK control

4:3

01b = Link, Speed[1:0].

R/W

00b

Retain

 

 

00b = Link[2:0].

 

 

 

 

 

 

 

 

 

Reserved

7:5

Reserved. Should be set to 000b.

R/W

000b

Retain

 

 

 

 

 

 

 

 

 

000b

= 42 ms.

 

 

 

 

 

001b

= 84 ms.

 

 

 

Blink Rate

10:8

010b

= 170 ms.

R/W

001b

Retain

011b = 340 ms.

 

 

 

 

 

 

 

100b

= 670 ms.

 

 

 

 

 

101b to 111b = Reserved.

 

 

 

 

 

 

 

 

 

 

Force INT# to Assert

11

0b

= Do not force INT# assertion.

R/W

0b

Retain

1b

= Force INT# assertion.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

000b

= no pulse stretching.

 

 

 

 

 

001b

= 21 ms to 42 ms.

 

 

 

 

 

010b

= 42 ms to 84 ms.

 

 

 

Pulse stretch duration

14:12

01b1

= 84 ms to 170 ms.

R/W

100b

Retain

100b

= 170 ms to 340 ms.

 

 

 

 

 

 

 

101b

= 340 ms to 670 ms.

 

 

 

 

 

110b = 670 ms to 1.3 s.

 

 

 

 

 

111b = 1.3s to 2.7 s.

 

 

 

 

 

 

 

 

 

 

Disable LED

15

0b

= Enable.

R/W

0b

Retain

1b

= Disable.

 

 

 

 

 

 

 

 

 

 

 

 

 

276

Software Developer’s Manual

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Intel Intel Gigabit Ethernet Controllers, PCI-X manual 276