Specifications
ASIX ELECTRONICS CORPORATION 
13
 AX88772 
USB to 10/100 Fast Ethernet/HomePNA Controller 
4.0 Serial EEPROM Memory Map 
EEPROM 
OFFSET 
HIGH BYTE  LOW BYTE 
00H  Reserved  Word Count For Preload 
01H Flag 
02H  Length of High-Speed Device Descriptor (bytes) EEPROM Offset of High-Speed Device Descriptor
03H  Length of High-Speed Configuration Descriptor 
(bytes) 
EEPROM Offset of High-Speed Configuration 
Descriptor 
04H  Node ID 1  Node ID 0 
05H  Node ID 3  Node ID 2 
06H  Node ID 5  Node ID 4 
07H  Language ID High Byte  Language ID Low Byte 
08H  Length of Manufacture String (bytes)  EEPROM Offset of Manufacture String 
09H  Length of Product String (bytes)  EEPROM Offset of Product String 
0AH  Length of Serial Number String (bytes)  EEPROM Offset of Serial Number String 
0BH  Length of Configuration String (bytes)  EEPROM Offset of Configuration String 
0CH  Length of Interface 0 String (bytes)  EEPROM Offset of Interface 0 String 
0DH  Length of Interface 1/0 String (bytes)  EEPROM Offset of Interface 1/0 String 
0EH  Length of Interface 1/1 String (bytes)  EEPROM Offset of Interface 1/1 String 
0FH  Phy Register Offset for Interrupt Endpoint  Phy Register Offset for Interrupt Endpoint 
10H  Max Packet Size High Byte  Max Packet Size Low Byte 
11H  Secondary Phy_Type [7:5] and Phy_ID [4:0]  Primary Phy_Type [7:5] and Phy_ID [4:0] 
12H  Pause Frame High Water Mark  Pause Frame Low Water Mark 
13H  Length of Full-Speed Device Descriptor (bytes) EEPROM Offset of Full-Speed Device Descriptor
14H  Length of Full-Speed Configuration Descriptor 
(bytes) 
EEPROM Offset of Full-Speed Configuration 
Descriptor 
15H-1FH Reserved  Reserved 
Table 2: Serial EEPROM Memory Map 










