Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Datasheet

14.4.2.13Port x PHY Special Control/Status Register (PHY_SPECIAL_CONTROL_STATUS_x)

Index (decimal): 31

Size:

16 bits

This read/write register is used to control and monitor various options of the Port x PHY.

BITS

 

 

DESCRIPTION

TYPE

DEFAULT

 

 

 

 

 

 

 

15:13

RESERVED

 

 

RO

-

 

 

 

 

 

 

 

12

Autodone

 

 

RO

0b

 

This bit indicates the status of the Auto-Negotiation on the Port x PHY.

 

 

 

0: Auto-Negotiation is not completed, is disabled, or is not active

 

 

 

1: Auto-Negotiation is completed

 

 

 

 

 

 

 

 

 

11:5

RESERVED - Write as 0000010b, ignore on read

R/W

0000010b

 

 

 

 

 

 

 

4:2

Speed Indication

RO

000b

 

This field indicates the current Port x PHY speed configuration.

 

 

 

 

 

 

 

 

 

 

 

STATE

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

000

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

001

10BASE-T Half-duplex

 

 

 

 

 

 

 

 

 

 

 

 

010

100BASE-TX Half-duplex

 

 

 

 

 

 

 

 

 

 

 

 

011

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

100

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

101

10BASE-T Full-duplex

 

 

 

 

 

 

 

 

 

 

 

 

110

100BASE-TX Full-duplex

 

 

 

 

 

 

 

 

 

 

 

 

111

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1:0

RESERVED

 

 

R/W

0b

 

 

 

 

 

 

 

Revision 1.4 (08-19-08)

308

SMSC LAN9311/LAN9311i

 

DATASHEET