LAN91C111 datasheet(70/125 Pages) MICROCHIP

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 2011-2016 Microchip Technology Inc.

DS00002276A-page 71

LAN91C111

9.2.9

CAP_ANEG - AUTO-NEGOTIATION CAPABLE

Indicates the ability (‘1’) to perform ANEG or not (‘0’).

9.2.10

LINK - LINK STATUS

A ‘1’ indicates a valid Link and a ‘0’ and invalid Link. The ‘0’ condition is latched until this register is read.

9.2.11

JAB - JABBER DETECT

Jabber condition detected when ‘1’ for 10Mbps. ‘1’ latched until this register is read or the PHY is reset. Always ‘0’ for

100Mbps

9.2.12

EXREG - EXTENDED CAPABILITY REGISTER

‘1’ Indicates extended registers are implemented

9.3

These two registers (offsets 2 and 3) provide a 32-bit value unique to the PHY.

9.4

This register control the values transmitted by the PHY to the remote partner when advertising its abilities.

9.4.1

NP - NEXT PAGE

A ‘1’ indicates the PHY wishes to exchange Next Page information.

9.4.2

ACK - ACKNOWLEDGE

It is used by the Auto-Negotiation function to indicate that a device has successfully received its Link Partner’s Link code

Word.

9.4.3

RF - REMOTE FAULT

When set, an advertisement frame will be sent with the corresponding bit set. This in turn will cause the PHY receiving

it to set the Remote Fault bit in its Status register

REG

Bits

Name

Default Value

R/W

Soft Reset

15-0

Company ID

0000000000010110

Retains Original Value

15-10

Company ID

111110

Retains Original Value

9-4

Manufacturer's ID

000100

Retains Original Value

3-0

Manufacturer's Revision #

- - - -

Retains Original Value

ACK

Reserved

TX_FDX

TX_HDX

10_FDX

10_HDX

Reserved

CSMA

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