LXT971ABC datasheet(77/90 Pages) INTEL

77 / 90 page

LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver

Datasheet

Document #: 249414

Revision #: 002

Rev. Date: August 7, 2002

Table 47. Auto-Negotiation Advertisement Register (Address 4)

Bit

Name

Description

Type 1

Default

4.15

1 = Port has ability to send multiple pages.

0 = Port has no ability to send multiple pages.

R/W

4.14

Reserved

Ignore.

4.13

Remote Fault

1 = Remote fault.

0 = No remote fault.

R/W

4.12

Reserved

Ignore.

R/W

4.11

Asymmetric

Pause

Pause operation defined in Clause 40 and 27.

R/W

4.10

Pause

1 = Pause operation enabled for full-duplex links.

0 = Pause operation disabled.

R/W

Note 2

4.9

100BASE-T4

1 = 100BASE-T4 capability is available.

0 = 100BASE-T4 capability is not available.

(The LXT971A does not support 100BASE-T4 but

allows this bit to be set to advertise in the auto-

negotiation sequence for 100BASE-T4 operation. An

external 100BASE-T4 transceiver could be switched in

if this capability is desired.)

R/W

4.8

100BASE-TX

full-duplex

1 = Port is 100BASE-TX full-duplex capable.

0 = Port is not 100BASE-TX full-duplex capable.

R/W

Note 3

4.7

100BASE-TX

1 = Port is 100BASE-TX capable.

0 = Port is not 100BASE-TX capable.

R/W

Note 3

4.6

10BASE-T

full-duplex

1 = Port is 10BASE-T full-duplex capable.

0 = Port is not 10BASE-T full-duplex capable.

R/W

Note 3

4.5

10BASE-T

1 = Port is 10BASE-T capable.

0 = Port is not 10BASE-T capable.

R/W

Note 3

4.4:0

Selector Field,

S<4:0>

<00001> = IEEE 802.3.

<00010> = IEEE 802.9 ISLAN-16T.

<00000> = Reserved for future auto-negotiation

development.

<11111> = Reserved for future auto-negotiation

development.

Unspecified or reserved combinations should not be

transmitted.

R/W

00001

1. R/W = Read/Write

RO = Read Only

2. The default setting of Register bit 4.10 (PAUSE) is determined by pin 33/H8 at reset.

3. Default values of Register bits 4.5, 4.6, 4.7, and 4.8 are determined by LED/CFGn pins at reset. Refer to

Table 9 for details.

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