78Q2132 데이터 시트보기 (PDF) - TDK Corporation

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78Q2132

1/10BASE-T HomePNA/Ethernet Transceiver

TDK Corporation 

78Q2132

1/10BASE-TX

HomePNA/Ethernet Transceiver

MR4 - AUTO-NEGOTIATION ADVERTISEMENT REGISTER

BIT

4.15

4.14

4.13

4.12:5

DETAIL

4.12:11

4.10

4.9

4.8

4.7

4.6

4.5

4.4:0

SYMBOL

NP

RSVD

RF

TAF

given

RSVD

A5

A4

A3

A2

A1

A0

S4:0

TYPE

R,0

R,0

R,W,0

R,W,(03h)

below.

R,0

R,0

R,0

R,0

R,0

R,W,(1)

R,W,(1)

R, 00001

DESCRIPTION

NEXT PAGE: Not supported; permanently tied low

RESERVED: This bit is permanently tied low

REMOTE FAULT: When internally set to logic one, the MII

management interface indicates to the link partner a remote fault

condition.

TECHNOLOGY ABILITY FIELD: The default value of this field is

dependent upon MR1.15:11 bits. This field can be overwritten by

management to auto-negotiate to an alternate common technology.

Writing to this register has no effect until auto-negotiation is

enabled.

RESERVED: For future technology. These bits are permanently

tied low.

FULL DUPLEX PAUSE: When set by the controller this bit will

cause advertisment, using FLP's of the ability to pause when in full

duplex mode. Not applicable in HomePNA mode.

100BASE-T4: Not supported; permanently tied low

100BASE-TX FULL DUPLEX: Not supported; permanently tied low

100BASE-TX: Not supported; permanently tied low

10BASE-T FULL DUPLEX: The default value of this bit follows

MR1.12. When the default is zero, this bit cannot be set by the

management interface.

10BASE-T: The default value of this bit follows MR1.11. When the

default is zero, this bit cannot be set by the management interface.

SELECTOR FIELD: Hard coded with the value of 00001 for

IEEE-802.3.

MR5 - AUTO-NEGOTIATION LINK PARTNER ABILITY REGISTER

BIT

SYMBOL

TYPE DESCRIPTION

5.15

NP

R, 0

NEXT PAGE: When set, it indicates that the link partner wishes to

engage in next page exchange.

5.14

ACK

R,0

ACKNOWLEDGE: When set, it indicates that the link partner has

successfully received at least three consecutive and consistent FLP

bursts.

5.13

RF

R,0

REMOTE FAULT: When set, it indicates that the link partner has a

fault.

5.12:5

TAF

R,0

TECHNOLOGY ABILITY FIELD: This field contains the technology

ability of the link partner. The bit definition is the same as

MR4.12:5.

5.4:0

S4:0

R, 00000

SELECTOR FIELD: This field contains the type of message sent by

the link partner. For IEEE-802.3 compliant link partner transceiver,

this field should be 00001.

15

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