RTL8100B-GR datasheet(34/66 Pages) REALTEK

Part #	RTL8100B-GR

Description	SINGLE-CHIP 10/100MBPS ETHERNET CONTROLLER WITH POWER MANAGEMENT

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Manufacturer	REALTEK [Realtek Semiconductor Corp.]

Direct Link	https://www.realtek.com/en/

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34 / 66 page

RTL8100B(L)

Datasheet

Single-Chip 10/100 Ethernet Controller w/Power Management

28

Track ID: JATR-1076-21 Rev. 1.5

6.22. Auto-Negotiation Expansion Register

(Offset 006Ah-006Bh, R)

This register contains additional status for NWay auto-negotiation.

Bit

Name

Description/Usage

Default/Attribute

15-5

-

Reserved, This bit is always set to 0.

-

4

MLF

Status indicating if a multiple link fault has occurred.

1 = fault occurred; 0 = no fault occurred.

0, RO

3

LP_NP_ABLE

Status indicating if the link partner supports Next Page negotiation.

1 = supported; 0 = not supported.

0, RO

2

NP_ABLE

This bit indicates if the local node is able to send additional Next

Pages.

0, RO

1

PAGE_RX

This bit is set when a new Link Code Word Page has been received.

The bit is automatically cleared when the auto-negotiation link

partner’s ability register (register 5) is read by management.

0, RO

0

LP_NW_ABLE

1 = link partner supports NWay auto-negotiation.

0, RO

6.23. Disconnect Counter

(Offset 006Ch-006Dh, R)

Bit

Name

Description/Usage

Default/Attribute

15-0

DCNT

This 16-bit counter increments by 1 for every disconnect event. It

rolls over when becomes full. It is cleared to zero by read

command.

h'[0000],

R

6.24. False Carrier Sense Counter

(Offset 006Eh-006Fh, R)

This counter provides information required to implement the “FalseCarriers” attribute within the MAU managed object class of

Clause 30 of IEEE 802.3u specification.

Bit

Name

Description/Usage

Default/Attribute

15-0

FCSCNT

This 16-bit counter increments by 1 for each false carrier event. It is

cleared to zero by read command.

h'[0000],

R

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