TNETE2008PBE datasheet(18/33 Pages) TI1

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TNETE2008

OctalPHY

EIGHT 10BASE-T PHYSICAL-LAYER INTERFACES

SPWS042B – DECEMBER 1997 – REVISED JUNE 1998

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

Force_Conf

Speed (0 = 10 Mbit/s)

Pause

Must Be 0

Speed (0 = 10 Mbit/s)

Pause (0 = no pause)

Half Duplex

IFCLK

IFLINK

IFRXDX

IFRXD Final Value

TNETE2008 Latches Final Values, Just Before

Autonegotiation FLP Exchange Commences.

(0 = no force conf)

(0 = request no pause)

Restarts Autonegotiation Setup

IFFORCEHD

Renegotiation

(input)

Latch Final Values

When IFLINK

↑

(Expanded View)

Link Good

Negotiated Link Protocol

Autonegotiate

Commences

Link Fails OR

Renegotiation

1200 ms MIN

80 ms

MIN

750 ms MIN

(0 = full duplex)

Clock Must Run Continuously

Half Duplex

(0 = request, full duplex when IFFORCEHD = 1)

IFCLK

(output)

IFTXEN

(input)

IFTXD3

(input)

IFTXD2

(input)

IFTXD1

(input)

IFTXD0

(input)

IFLINK

(output)

IFRXDV

(output)

IFRXD3

(output)

IFRXD2

(output)

IFRXD1

(output)

IFRXD0

(output)

IFLINK = 1:

IFRXD Final Value Latched

on Previous Edge

Figure 8. MAC-to-PHY, PHY-to-MAC Control Exchanges for Not Force Configuration Mode

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