Specifications

ASIX ELECTRONICS CORPORATION
3
AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
8.1.3 LEAKAGE CURRENT AND CAPACITANCE ............................................................................34
8.1.4 DC CHARACTERISTICS OF 2.5V I/O PINS...........................................................................34
8.1.5 DC CHARACTERISTICS OF 3.3V I/O PINS...........................................................................34
8.2 POWER CONSUMPTION...........................................................................................................35
8.2.1 INTERNAL PHY ....................................................................................................................35
8.2.2 OPERATING THROUGH MII INTERFACE WITH INTERNAL ETHERNET PHY POWER-DOWN...35
8.3 POWER-UP SEQUENCE............................................................................................................ 35
8.4 AC TIMING CHARACTERISTICS..............................................................................................36
8.4.1 Clock Timing..................................................................................................................36
8.4.2 Reset Timing...................................................................................................................37
8.4.3 MII Timing (100Mbps)...................................................................................................37
8.4.4 Station Management Timing..........................................................................................38
8.4.5 Serial EEPROM Timing.................................................................................................38
9.0 PACKAGE INFORMATION............................................................................................39
10.0 ORDERING INFORMATION ......................................................................................40
APPENDIX A: SYSTEM APPLICATIONS .................................................................................41
A.1 USB TO FAST ETHERNET CONVERTER ..................................................................................... 41
A.2 USB TO FAST ETHERNET AND/OR HOMELAN COMBO SOLUTION ............................................41
REVISION HISTORY ....................................................................................................................42
List of Figures
FIGURE 1: AX88772 BLOCK DIAGRAM ................................................................................................4
FIGURE 2: AX88772 PINOUT DIAGRAM................................................................................................5
FIGURE 3: INTERNAL DATAPATH DIAGRAM OF 10/100 ETHERNET PHY AND MII INTERFACE...........10
FIGURE 4: INTERNAL CONTROL MUX FOR STATION MANAGEMENT INTERFACE .................................11
FIGURE 5: MULTICAST FILTER EXAMPLE............................................................................................24
List of Tables
TABLE 1: PINOUT DESCRIPTION ............................................................................................................6
TABLE 2: SERIAL EEPROM MEMORY MAP .......................................................................................13
TABLE 3: USB STANDARD COMMAND REGISTER MAP.......................................................................18
TABLE 4: USB VENDOR COMMAND REGISTER MAP ..........................................................................19
TABLE 5: REMOTE WAKEUP TRUTH TABLE ........................................................................................28
TABLE 6: EMBEDDED ETHERNET PHY REGISTER MAP........................................................................29