LXT975B datasheet(67/74 Pages) INTEL

67 / 74 page

Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975

Datasheet

Table 48. Auto Negotiation Advertisement Register (Address 4)

Bit

Name

Description

Type 1

Default

4.15

Not supported.

4.14

Reserved

Ignore.

4.13

Remote Fault

1 = Remote fault.

0 = No remote fault.

R/W

4.12:11

Reserved

Ignore.

R/W

4.10

Pause

1 = Pause operation is enabled for full-duplex links.

0 = Pause operation is disabled.

R/W

4.9

100BASE-T4

1 = 100BASE-T4 capability is available.

0 = 100BASE-T4 capability is not available.

(The LXT974/975 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 2

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 4

4.5

10BASE-T

1 = Port is 10BASE-T capable.

0 = Port is not 10BASE-T capable.

R/W

Note 5

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 value of bit 4.8 is determined by FDE ANDed with CFG_2.

3. The default value of bit 4.7 is determined by CFG_2.

4. The default value of bit 4.6 is determined by FDE AND’ed with CFG_1.

5. The default value of bit 4.5 is determined by CFG_1.

Table 49. Auto Negotiation Link Partner Ability Register (Address 5)

Bit

Name

Description

Type 1

Default

5.15

1 = Link Partner has ability to send multiple pages.

0 = Link Partner has no ability to send multiple pages.

N/A

5.14

Acknowledge

1 = Link Partner has received Link Code Word from LXT974/975.

0 = Link Partner has not received Link Code Word from the

LXT974/975.

N/A

5.13

Remote Fault

1 = Remote fault.

0 = No remote fault.

N/A

5.12:11

Reserved

Ignore.

N/A

1. RO = Read Only

LXT975B Datasheet(PDF) 67 Page - Intel Corporation

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