Register Descriptions

13.4.7.1.2PHY Status Register PSTATUS (01d; R)

Table 13-17. PHY Status Register Bit Description

Field

Bit(s)

 

Description

Mode

HW Rst

SW Rst

 

 

 

 

 

 

 

Extended Capability

0

1b

= Extended register capabilities.

RO

Always 1b

 

 

 

 

 

 

 

 

Jabber Detect

1

1b

= Jabber condition detected.

RO,L

0b

0b

0b

= Jabber condition not detected.

H

 

 

 

 

 

 

 

 

 

 

 

 

 

1b

= Link is up.

 

 

 

 

 

0b

= Link is down.

 

 

 

 

 

This register indicates whether link was

RO,

 

 

Link Status

2

lost after the last read. For the current

0b

0b

link status, either read this register

LL

 

 

 

 

 

 

back-to-back or read the Link Real Time

 

 

 

 

 

bit 17 in the PHY Specific Status

 

 

 

 

 

Register.

 

 

 

 

 

 

 

 

 

 

Auto-Negotiation

3

1b

= PHY able to perform Auto-

RO

Always 1b

 

Ability

Negotiation.

 

 

 

 

 

 

 

 

 

 

 

 

Remote Fault

4

1b

= Remote fault condition detected.

RO,L

0b

0b

0b

= Remote fault condition not

H

 

 

detected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1b

= Auto-Negotiation process

 

 

 

Auto-Negotiation

5

complete.

RO

0b

0b

Complete

0b

= Auto-Negotiation process not

 

 

 

 

 

 

complete.

 

 

 

 

 

 

 

 

 

 

MF Preamble

6

1b

= PHY accepts management frames

RO

Always 1b

 

(0b for the 82541xx

Suppression

with preamble suppressed.

 

 

and 82547GI/EI)

 

 

 

 

 

 

 

 

 

 

 

Reserved

7

Reserved. Should be set to 0b

RO

Always 0b

 

 

 

 

 

 

 

 

Extended Status

8

1b

= Extended status information in the

RO

Always 1b

 

Extended PHY Status Register (15d).

 

 

 

 

 

 

 

 

 

 

 

 

 

100BASE-T2 Half

9

0b

= PHY not able to perform half

RO

Always 0b

 

Duplex

duplex 100BASE-T2.

 

 

 

 

 

 

 

 

 

 

 

100BASE-T2 Full

10

0b = PHY not able to perform full duplex

RO

Always 0b

 

Duplex

100BASE-T2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1b

= PHY able to perform half duplex

 

 

 

 

 

10BASE-T.

RO

1b

 

 

 

0b

= PHY not able to perform half

 

10 Mb/s Half Duplex

11

duplex 10BASE-T.

 

 

 

82544GC/EI only:

 

 

 

 

 

 

 

 

 

 

Bit 14 = Bit 13 = Bit 12 = Bit 11 =

RO

MODE[3:0]

 

 

 

(MODE[3:0] is not any of xx01b, 1x00b,

 

 

 

 

 

001xb, 0111b).

 

 

 

 

 

 

 

 

 

 

244

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