H1102 datasheet(32/54 Pages) MICREL

32 / 54 page

Micrel, Inc.

KSZ8041NL/RNL

September 2010

M9999-090910-1.4

Description

Basic Control

Basic Status

PHY Identifier 1

PHY Identifier 2

Auto-Negotiation Advertisement

Auto-Negotiation Link Partner Ability

Auto-Negotiation Expansion

Auto-Negotiation Next Page

Link Partner Next Page Ability

9h – 13h

Reserved

14h

MII Control

15h

RXER Counter

16h – 1Ah

Reserved

1Bh

Interrupt Control/Status

1Ch – 1Dh

Reserved

1Eh

PHY Control 1

1Fh

PHY Control 2

Address

Name

Description

Mode

(1)

Default

0.15

Reset

1 = Software reset

0 = Normal operation

This bit is self-cleared after a ‘1’ is written to it.

RW/SC

0.14

Loop-back

1 = Loop-back mode

0 = Normal operation

0.13

Speed Select

(LSB)

1 = 100Mbps

0 = 10Mbps

This bit is ignored if auto-negotiation is enabled

(register 0.12 = 1).

Set by SPEED strapping pin.

See “Strapping Options” section

for details.

0.12

Auto-

Negotiation

Enable

1 = Enable auto-negotiation process

0 = Disable auto-negotiation process

If enabled, auto-negotiation result overrides

settings in register 0.13 and 0.8.

Set by NWAYEN strapping pin.

See “Strapping Options” section

for details.

0.11

Power Down

1 = Power down mode

0 = Normal operation

0.10

Isolate

1 = Electrical isolation of PHY from MII and

TX+/TX-

0 = Normal operation

Set by ISO strapping pin.

See “Strapping Options” section

for details.

H1102 Datasheet(PDF) 32 Page - Micrel Semiconductor

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