DP83815 datasheet(73/108 Pages) NSC

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4.0 Register Set (Continued)

Remote Fault Remote Fault:

1 = Remote Fault condition detected (cleared on read of BMSR (address 0x84h) register or by reset).

Fault criteria: notification from Link Partner of Remote Fault via Auto-Negotiation

0 = No remote fault condition detected

Jabber Detect Jabber Detect: This bit only has meaning in 10 Mb/s mode

This bit is a duplicate of the Jabber Detect bit in the BMSR register, except that it is not cleared upon a

read of the PHYSTS register.

1 = Jabber condition detected

0 = No Jabber

Auto-Neg.

Complete

Auto-Negotiation Complete:

1 = Auto-Negotiation complete

0 = Auto-Negotiation not complete

Loopback

Status

Loopback:

1 = Loopback enabled

0 = Normal operation

Duplex Status Duplex:

This bit indicates duplex status and is determined from Auto-Negotiation or Forced Modes.

1 = Full duplex mode

0 = Half duplex mode

Note: This bit is only valid if Auto-Negotiation is enabled and complete and there is a valid link or if Auto-

Negotiation is disabled and there is a valid link.

Speed Status Speed10:

This bit indicates the status of the speed and is determined from Auto-Negotiation or Forced Modes.

1 = 10 Mb/s mode

0 = 100 Mb/s mode

Note: This bit is only valid if Auto-Negotiation is enabled and complete and there is a valid link or if Auto-

Negotiation is disabled and there is a valid link.

Link Status

Link Status:

This bit is a duplicate of the Link Status bit in the BMSR register, except that it will not be cleared upon a

read of the PHYSTS register.

1 = Valid link established (for either 10 or 100 Mb/s operation)

0 = Link not established

Bit

Bit Name

Description

DP83815 Datasheet(PDF) 73 Page - National Semiconductor (TI)

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