ASIX ELECTRONICS CORPORATION

2

AX88772

USB to 10/100 Fast Ethernet/HomePNA Controller

Table of Contents

1.0

INTRODUCTION ................................................................................................................ 4

1.1

GENERAL DESCRIPTION...........................................................................................................4

1.2

AX88772 BLOCK DIAGRAM....................................................................................................4

1.3

AX88772 PINOUT DIAGRAM ...................................................................................................5

2.0

SIGNAL DESCRIPTION .................................................................................................... 6

3.0

FUNCTION DESCRIPTION ............................................................................................ 10

3.1

USB CORE AND INTERFACE ..................................................................................................10

3.2

10/100 ETHERNET PHY.........................................................................................................10

3.3

MAC CORE ...........................................................................................................................10

3.4

STATION MANAGEMENT (STA).............................................................................................10

3.5

MEMORY ARBITER ................................................................................................................11

3.6

USB TO ETHERNET BRIDGE...................................................................................................11

3.7

SERIAL EEPROM LOADER ...................................................................................................11

3.8

GENERAL PURPOSE I/O..........................................................................................................11

4.0

SERIAL EEPROM MEMORY MAP............................................................................... 13

4.1

DETAILED DESCRIPTION ........................................................................................................14

5.0

USB CONFIGURATION STRUCTURE ......................................................................... 17

5.1

USB CONFIGURATION ...........................................................................................................17

5.2

USB INTERFACE....................................................................................................................17

5.3

USB ENDPOINTS ...................................................................................................................17

6.0

USB COMMANDS ............................................................................................................. 18

6.1

USB STANDARD COMMANDS................................................................................................18

6.2

USB VENDOR COMMANDS....................................................................................................19

6.2.1

DETAILED REGISTER DESCRIPTION ....................................................................................20

6.2.2

REMOTE WAKEUP DESCRIPTION ........................................................................................28

6.3

INTERRUPT ENDPOINT ...........................................................................................................28

7.0

EMBEDDED ETHERNET PHY REGISTER DESCRIPTION .................................... 29

7.1

DETAILED REGISTER DESCRIPTION........................................................................................29

7.1.1

BASIC MODE CONTROL REGISTER (BMCR) ......................................................................29

7.1.2

BASIC MODE STATUS REGISTER (BMSR) ..........................................................................30

7.1.3

PHY IDENTIFIER REGISTER 1 .............................................................................................31

7.1.4

PHY IDENTIFIER REGISTER 2 .............................................................................................31

7.1.5

AUTO NEGOTIATION ADVERTISEMENT REGISTER (ANAR) ...............................................31

7.1.6

AUTO NEGOTIATION LINK PARTNER ABILITY REGISTER (ANLPAR) ................................32

7.1.7

AUTO NEGOTIATION EXPANSION REGISTER (ANER).........................................................32

8.0

ELECTRICAL SPECIFICATIONS ................................................................................. 33

8.1

DC CHARACTERISTICS ..........................................................................................................33

8.1.1

ABSOLUTE MAXIMUM RATINGS.........................................................................................33

8.1.2

RECOMMENDED OPERATING CONDITION ...........................................................................33