78Q2132 Просмотр технического описания (PDF) - TDK Corporation

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78Q2132

1/10BASE-T HomePNA/Ethernet Transceiver

TDK Corporation 

78Q2132

1/10BASE-TX

HomePNA/Ethernet Transceiver

REGISTER DESCRIPTION (continued)

MR1 - STATUS REGISTER (continued)

BIT

SYMBOL

TYPE DESCRIPTION

1.3

ANEGA

R, (0) HPNAEN=0: AUTO-NEGOTIATION ABILITY: This bit, when set,

indicates the ability to perform auto-negotiation. The value of this

bit is determined by the ANEGA pin

HPNAEN=1: not applicable

1.2

LINK

R, 0 GLOBAL

HPNAEN=0: LINK STATUS: A logic one indicates that a valid

10BaseT link has been established. If the link status should

transition from an OK status to a NOT-OK status, this bit will

become cleared and remain cleared until it is read.

HPNAEN=1: LINK STATUS is always logic one if MR19.11 is equal

to logic zero. This reflects that the device will be put into HomePNA

v1.0 mode. If MR19.11 is a logic 1, then LINK STATUS will reflect

the link integrity of the link defined in HomePNA v1.1LINK STATUS:

A logic one indicates that a valid link has been established. If the

link status should transition from an OK status to a NOT-OK status,

this bit will become cleared and remain cleared until it is read.

1.1

JAB

R, 0, RC HPNAEN=0: JABBER DETECT: In 10Base-T mode, this bit is set during

a jabber event. After a jabber event it remains set until cleared by a read

operation.

HPNAEN=1: not applicable.

1.0

EXTD

R, 1 GLOBAL: Works for both HPNAEN=0,1

EXTENDED CAPABILITY: This bit is permanently set to logic one

to indicate that the 78Q2132 provides an extended register set

(MR2 and beyond).

MR2, 3 - PHY IDENTIFIER REGISTER

2.15:0

3.15:10

OUI

R, 000Eh ORGANIZATIONALLY UNIQUE IDENTIFIER: This value is 00-

C0-39 for TDK Semiconductor Corporation. This translates to a

value of 000Eh for this register.

OUI

R, 011100 ORGANIZATIONALLY UNIQUE IDENTIFIER: Remaining 6 bits

of the OUI.

3.9:4

MN

R, 010010 MODEL NUMBER: The last 2 digits of the model number

78Q2132 is encoded into the 6 bits. (32d-20d=12h)

3.3:0

RN

R,0001 REVISION NUMBER: For example, a value of 0010 corresponds

to the second version of the silicon.

14

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