LAN9220 datasheet(104/142 Pages) MICROCHIP

Part #	LAN9220

Description	16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support

PDF	142 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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104 / 142 page

LAN9220

DS00002417A-page 104

 2006-2017 Microchip Technology Inc.

5.5

PHY Registers

The PHY registers are not memory mapped. These registers are accessed indirectly through the MAC via the MII_ACC

and MII_DATA registers. An index must be used to access individual PHY registers. PHY Register Indexes are shown

in Table 5-8, "LAN9220 PHY Control and Status Register".

Note:

The NASR (Not Affected by Software Reset) designation is only applicable when bit 15 of the PHY Basic

Control Register (Reset) is set.

TABLE 5-8:

LAN9220 PHY CONTROL AND STATUS REGISTER

PHY Control and Status Registers

Index

(In Decimal)

Basic Control Register

Basic Status Register

PHY Identifier 1

PHY Identifier 2

Auto-Negotiation Advertisement Register

Auto-Negotiation Link Partner Ability Register

Auto-Negotiation Expansion Register

Mode Control/Status Register

Special Modes Register

Special Control/Status Indications

Interrupt Source Register

Interrupt Mask Register

PHY Special Control/Status Register

LAN9220 Datasheet(PDF) 104 Page - Microchip Technology