LAN8720AI datasheet(57/79 Pages) SMSC

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Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support

Datasheet

SMSC LAN8720A/LAN8720Ai

Revision 1.4 (08-23-12)

DATASHEET

4.2.9

Special Modes Register

Note 4.4

The default value of this field is determined by the MODE[2:0] configuration straps. Refer

to Section 3.7.2, "MODE[2:0]: Mode Configuration," on page 31 for additional information.

Note 4.5

The default value of this field is determined by the PHYAD[0] configuration strap. Refer to

Section 3.7.1, "PHYAD[0]: PHY Address Configuration," on page 31 for additional

information.

Index (In Decimal):

Size:

16 bits

BITS

DESCRIPTION

TYPE

DEFAULT

RESERVED

Write as 1, ignore on read.

R/W

NASR

13:8

RESERVED

7:5

MODE

Transceiver mode of operation. Refer to Section 3.7.2, "MODE[2:0]: Mode

Configuration," on page 31 for additional details.

R/W

NASR

Note 4.4

4:0

PHYAD

PHY Address. The PHY Address is used for the SMI address and for

initialization of the Cipher (Scrambler) key. Refer to Section 3.7.1,

"PHYAD[0]: PHY Address Configuration," on page 31 for additional details.

R/W

NASR

Note 4.5

LAN8720AI Datasheet(PDF) 57 Page - SMSC Corporation

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