Register Descriptions

82544GC/EI Only:

Table 13-21. Auto-Negotiation Advertisement Register Bit Description (MODE[3:0] is one of 001xb, 0111b)

Field

Bit(s)

Description

Mode

HW Rst

SW Rst

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

 

 

no effect unless Auto-Negotiation is

 

 

 

Reserved

4:0

restarted (PHY Control Register) or the

R/W

00000b

Retain

link goes down.

 

 

 

 

 

 

 

Reserved bit is R/W to allow forward

 

 

 

 

 

compatibility with future IEEE standards.

 

 

 

 

 

 

 

 

 

 

 

1b = Advertise

 

 

 

 

 

0b = Not advertised

 

 

 

1000BASE-X Full

5

Values programmed in this register have

R/W

ANEG[3]

Retain

no effect unless Auto-Negotiation is

Duplex

 

restarted (PHY Control Register) or the

 

 

 

 

 

 

 

 

 

 

link goes down.

 

 

 

 

 

Bit 5: ANEG[3] = 1b

 

 

 

 

 

 

 

 

 

 

 

1b = Advertise

 

 

 

 

 

0b= Not advertised

 

 

 

1000BASE-X Half

6

Values programmed in this register have

R/W

ANEG[2]

Retain

no effect unless Auto-Negotiation is

Duplex

 

restarted (PHY Control Register) or the

 

 

 

 

 

 

 

 

 

 

link goes down.

 

 

 

 

 

Bit 6: ANEG[2] = 1b

 

 

 

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

Pause

7

no effect unless Auto-Negotiation is

R/W

0b

Retain

restarted (PHY Control Register) or the

 

 

 

 

 

 

 

link goes down.

 

 

 

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

Asymmetric Pause

8

no effect unless Auto-Negotiation is

R/W

000b

Retain

restarted (PHY Control Register) or the

 

 

 

 

 

 

 

link goes down.

 

 

 

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

 

 

no effect unless Auto-Negotiation is

 

 

 

Reserved

11:9

restarted (PHY Control Register) or the

R/W

0b

Retain

link goes down.

 

 

 

 

 

 

 

Reserved bit is R/W to allow forward

 

 

 

 

 

compatibility with future IEEE standards.

 

 

 

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

 

 

no effect unless Auto-Negotiation is

 

 

 

RF1

12

restarted (PHY Control Register) or the

R/W

0b

Retain

link goes down.

 

 

 

 

 

 

 

Ethernet controller has no ability to

 

 

 

 

 

detect remote fault.

 

 

 

 

 

 

 

 

 

 

 

Values programmed in this register have

 

 

 

 

 

no effect unless Auto-Negotiation is

 

 

 

RF2

13

restarted (PHY Control Register) or the

R/W

0b

Retain

link goes down.

 

 

 

 

 

 

 

Ethernet controller has no ability to

 

 

 

 

 

detect remote fault.

 

 

 

 

 

 

 

 

 

Reserved

14

Reserved. Should be set to 0b.

RO

Always 0b

 

 

 

 

 

 

 

250

Software Developer’s Manual

Page 264
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Intel PCI-X, Intel Gigabit Ethernet Controllers manual 82544GC/EI Only, ANEG3, ANEG2, RF1, RF2