LAN8187 datasheet(46/72 Pages) SMSC

46 / 72 page

±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM

Datasheet

Revision 1.0 (12-14-06)

SMSC LAN8187/LAN8187I

DATASHEET

17.6

ALTINT

Alternat Interrupt Mode.

0 = Primary interrupt system enabled (Default).

1 = Alternate interrupt system enabled.

See Section 5.3, "Interrupt Management," on page 49.

17.5:4

Reserved

Write as 0, ignore on read.

17.3

PHYADBP

1 = PHY disregards PHY address in SMI access

write.

17.2

Force

Good Link Status

0 = normal operation;

1 = force 100TX- link active;

Note:

This bit should be set only during lab testing

17.1

ENERGYON

ENERGYON – indicates whether energy is detected

on the line (see Section 5.4.5.2, "Energy Detect

Power-Down," on page 51); it goes to “0” if no valid

energy is detected within 256ms. Reset to “1” by

hardware reset, unaffected by SW reset.

17.0

Reserved

Write as 0, ignore on read.

Table 5.39 Register 18 - Special Modes

ADDRESS

NAME

DESCRIPTION

MODE

DEFAULT

18.15:14

MIIMODE

MII Mode: set the mode of the MII:

0 – MII interface.

1 – RMII interface

RW,

NASR

18.13:8

Reserved

Write as 0, ignore on read.

RW,

NASR

000000

18.7:5

MODE

PHY Mode of operation. Refer to Section 5.4.9.2,

"Mode Bus – MODE[2:0]," on page 53 for more

details.

RW,

NASR

XXX

EVB8700

default

111

18.4:0

PHYAD

PHY Address.

The PHY Address is used for the SMI address and for

the initialization of the Cipher (Scrambler) key. Refer

to Section 5.4.9.1, "Physical Address Bus -

PHYAD[4:0]," on page 53 for more details.

RW,

NASR

PHYAD

EVB8700

default

11111

Table 5.40 Register 27 - Special Control/Status Indications

ADDRESS

NAME

DESCRIPTION

MODE

DEFAULT

27.15

AMDIXIOCTRL

Enables the external AMDIX and CH_SELECT pins

0 - External pins AMDIX_EN and CH_SELECT control

the AMDIX.

1 - Internal bits 27.14 and 27.13 control the AMDIX.

Note:

Please see Table 4.3, “Auto-MDIX Control,”

on page 30

Table 5.38 Register 17 - Mode Control/Status (continued)

ADDRESS

NAME

DESCRIPTION

MODE

DEFAULT

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