LAN8820I datasheet(43/83 Pages) MICROCHIP

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DS00001871B-page 43

LAN8820/LAN8820I

4.2.11

MASTER/SLAVE STATUS REGISTER

Index (In Decimal): 10

Size:

16 bits

Bits

Description

Type

Default

Master/Slave Configuration Fault

0 = No MASTER-SLAVE configuration fault detected

1 = MASTER-SLAVE configuration fault detected

RO/LH

Master/Slave Configuration Resolution

0 = Local PHY configuration resolved to SLAVE

1 = Local PHY configuration resolved to MASTER

Local Receiver Status

0 = Local Receiver not OK

1 = Local Receiver OK

Remote Receiver Status

0 = Remote Receiver not OK

1 = Remote Receiver OK

LP 1000T FD

This bit is valid only when the Page Received bit of the Auto Negotiation

Expansion Register is 1.

0 = Link Partner is not capable of 1000BASE-T full duplex

1 = Link Partner is capable of 1000BASE-T full duplex

LP 1000T HD

This bit is valid only when the Page Received bit of the Auto Negotiation

Expansion Register is 1.

0 = Link Partner is not capable of 1000BASE-T half duplex

1 = Link Partner is capable of 1000BASE-T half duplex

9:8

RESERVED

7:0

Idle Error Count

Cumulative count of the errors detected when the receiver is receiving idles.

These bits are reset to all zeroes when the error count is read by the

management function or upon execution of a hardware reset, software reset,

or logical reset. This field is held at all ones in case of over-flow.

This field can be used to trigger an interrupt upon overflow. Refer to Section

3.5, "Interrupt Management," on page 21 for additional information.

00h

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