Specifications
ASIX ELECTRONICS CORPORATION 
42
 AX88772 
USB to 10/100 Fast Ethernet/HomePNA Controller 
Revision History 
Revision  Date  Comment 
V 0.1  1/5/04  Initial Release. 
V 0.2  4/16/04  Added power consumption data and updated pin description for pin 
USB_SPEED_LED. 
V 0.3  8/9/04  Changed Bulk In transfer to Endpoint 2 and Bulk Out transfer to 
Endpoint 3 in section 5.3. 
V 0.4  12/23/04  Added thermal data in section 8.2. 
V 0.5  1/6/05  Added operating temperature in feature and section 8.1.2. 
V 0.6  3/23/05  Added power-up sequence in section 8.3. 
V 0.7  6/21/05  Changed the support to 1 USB interface in section 5.2. 
V 1.0  9/15/06  1. Added the Power Consumption of MAC to MAC application 
through MII interface in Section 8.2.2. 
2. Correct the EEDO input Setup and Hold time information in 
Section 8.4.5. 
V1.1  4/24/07  1. Added suggested operating frequency range for XIN12M pin in 
section 2.0. 
2. Swaped pin name XIN25M and XOUT25M in section 2.0 and 
Figure 2. Corrected XIN25M/XOUT25M to 2.5V tolerant pin. 
3. Added MII MAC-to-MAC connection diagram in section 3.9. 
4. Removed USB V1.0 from datasheet. 










