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Home >> Support >>  FAQs >>  AX88172A

AX88172A FAQs
 
Driver Installation
 
  • 0001: Where can I obtain the the latest AX88172A drivers?
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  • 0002: Why don't ASIX's AX88172A standard drivers work with my AX88172A device?
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    Design Considerations
     
  • 0003: What is the reference Ethernet transformer of the AX88172A demo board?
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  • 0004: What are the specification of 12MHz & 25MHz reference crystals of AX88172A demo board?
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  • 0005: What kind of EEPROM is supported by AX88172A?
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  • 0006: Can I remove the EEPROM from the AX88172A application?
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  • 0007: How do I program the AX88172A EEPROM?
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  • 0008: Do we need to register our own VID/PID for our AX88172A based application systems or can we use the ASIX's VID/PID?
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  • 0009: How do I register a Vendor ID from USB-IF?
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  • 0010: Do I have to assign a unique MAC address to every AX88172A based devices?
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  • 0011: How do I register a MAC/Ethernet address from IEEE-SA?
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  • 0012: Do I have to assign a unique serial number to every AX88172A based device?
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  • 0013: Did the AX88172A pass the USB-IF compliant certification?
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  • 0014: Does the AX88172A Windows driver support the WOL function in S4 (Hibernate)/S5 (Shutdown) mode?
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  • 0015: Can the AX88172A be connected to another Ethernet MAC controller through a MII interface?
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  • 0016: How to open the gerber files of AX88172A demo board?
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  • 0017: How to open the PowerPCB PCB layout file of AX88172A demo board?
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    Q0001: Where can I obtain the the latest AX88172A drivers?
    A0001: Please visit the AX88172A Driver Download web page (http://www.asix.com.tw/download.php?sub=driverdetail&PItemID=96) for details.

    Note: The AX88172A drivers are released for users to evaluate some basic network functions of the AX88172A demo board. Users should contact ASIX's Sales (sales@asix.com.tw) for further driver support on your AX88172A target applications.

    Q0002: Why don't ASIX's AX88172A standard drivers work with my AX88172A device?
    A0002: All ASIX's AX88172A standard drivers are qualified with ASIX's AX88172A demo board with AX88172A default Vendor ID (0B95h) and Product ID (172Ah). Some of AX88172A manufacturers have their own Vendor ID and Product ID on their AX88172A applications. In this case, ASIX's AX88172A standard drivers will not work with your AX88172A device. Please contact the technical support of your AX88172A device manufacturer to obtain a proper driver.

    Q0003: What is the reference Ethernet transformer of the AX88172A demo board?
    A0003: The reference Ethernet transformer on the AX88172A demo board is the Bothhand LU1S041X LF (Turns Ratio 1CT:1CT, Auto-MDIX) single RJ-45 connector module with integrated 10/100 BASE-TX magnetic. Please refer to Section 4 of AX88x72A USB-to-LAN Application Design Note for the detailed Ethernet magnetic circuit information. You can download it from AX88172A Application Design & Layout Guide Download web page (http://www.asix.com.tw/download.php?sub=Layoutdetail&PItemID=96) directly.

    Q0004: What are the specification of 12MHz & 25MHz reference crystals of AX88172A demo board?
    A0004: The 12MHz/25MHz crystal signals of AX88172A board should be winthin (12MHz +- 50ppm)/(25MHz +- 50ppm) respectively. Please refer to Section 3 of AX88x72A USB-to-LAN Application Design Note for the detailed 12MHz/25MHz crystal circuits information. You can download it from AX88172A Application Design & Layout Guide Download web page (http://www.asix.com.tw/download.php?sub=Layoutdetail&PItemID=96) directly.

    Q0005: What kind of EEPROM is supported by AX88172A?
    A0005: AX88172A supports 16-bit mode 93C56 or 93C66 EEPROM.

    Q0006: Can I remove the EEPROM from the AX88172A application?
    A0006: No, the AX88172A EEPROM content includes important hardware initialization data like USB descriptors, product strings, serial number, etc. This configuration data will be used during the AX88172A's hardware initialization for normal operation.

    Q0007: How do I program the AX88172A EEPROM?
    A0007: AX88172A supports some default settings inside chip hardware to enable it to communicate with USB host controller during enumeration when the AX88172A EEPROM is blank (prior to being programmed). The default settings inside chip facilitate users to update the EEPROM content through a Windows PC during R&D validation process or program a blank EEPROM mounted on target system PCB during manufacturing process.

    ASIX Electronics provides a Windows SROM Programming tool for users to easily program the Serial EEPROM of AX88172A on a typical Windows XP/2000 PC. This AX88172A WinXP/2K SROM Programming Tool supports to customize the MAC address, Serial Number, Vendor ID and Product ID, etc. for AX88172A based application systems in mass production.

    Alternatively, users can pre-program the blank EEPROM on a 3rd Party Universal Programmer before soldering the EEPROM onto the AX88172A application device. It is recommended that users assign a unique MAC address in the EEPROM for every AX88172A device.

    Also if users plan to use a Windows PC to test AX88172A-based devices repeatedly during mass production, it is recommended that the same serial number be assigned to the EEPROM for every AX88172A device. However, a different serial number should be assigned in the EEPROM for every AX88172A device if users need to install more than one AX88172A device on the same platform.

    Please contact ASIX's Sales (sales@asix.com.tw) to get the AX88x72A EEPROM User Guide for more details.

    Q0008: Do we need to register our own VID/PID for our AX88172A based application systems or can we use the ASIX's VID/PID?
    A0008: Customers should use your own VID and PID on your AX88172A applications since the AX88172A standard drivers are released for users to evaluate some basic network functions of the AX88172A demo board. ASIX Electronics might need to modify AX88172A drivers to reach the requirements for customers' different AX88172A applications. Please contact ASIX Sales for further driver support on your AX88172A target applications.

    You can register your own VID from USB Implementers Forum, Inc. and define the PID based on your company rules. If you have any problems, please contact ASIX's Sales (sales@asix.com.tw) for further support.

    Q0009: How do I register a Vendor ID from USB-IF?
    A0009: If you are a new USB product developer looking to get a Vendor ID for your company, you can register a Vendor ID from USB Implementers Forum, Inc. Please visit the USB-IF web site (http://www.usb.org/developers/vendor/) for details.

    Q0010: Do I have to assign a unique MAC address to every AX88172A based devices?
    A0010: Yes, every Ethernet device must have a unique MAC address. You should always assign a unique MAC address in the AX88172A EEPROM.

    Q0011: How do I register a MAC/Ethernet address from IEEE-SA?
    A0011: You must first have an OUI or an IAB, to which you then append 24 or 12 bits respectively, in a way that makes the resulting 48-bit number unique. Your 24 or 12 bits must be unique within your organization, which will require coordination among all the users of your organization's OUI or IAB. Please visit the IEEE-SA web site (http://standards.ieee.org/regauth/registry_OUI.html) for details.

    Q0012: Do I have to assign a unique serial number to every AX88172A based device?
    A0012: No, it depends on the real requirement of your AX88172A target application. If your end customer may need to install more than one AX88172A-based device on your target application, you should assign a different serial number in the EEPROM for every AX88172A device.

    If your target application always uses one AX88172A device, you can consider assigning the same serial number in the EEPROM for every AX88172A device for easy maintenance in mass production, especially if you plan to use a Windows PC to test AX88172A based devices repeatedly during the mass production test.

    Q0013: Did the AX88172A pass the USB-IF compliant certification?
    A0013: Yes, AX88172A demo board was certified by USB-IF.

    Q0014: Does the AX88172A Windows driver support the WOL function in S4 (Hibernate)/S5 (Shutdown) mode?
    A0014: The answer depends on whether the USB host controller supports the S4/S5 wake-up function or not since the WOL function of AX88172A USB to LAN devices should be supported on both AX88172A and the USB host controller. Many USB host controllers don't support the WOL function in S4 (Hibernate)/S5 (Shutdown) mode.

    Q0015: Can the AX88172A be connected to another Ethernet MAC controller through a MII interface?
    A0015: Yes, the AX88172A supports the MII interface for this target application. Please contact ASIX's sales (sales@asix.com.tw) for further support.

    Q0016: How to open the gerber files of AX88172A demo board?
    A0016: You can open the gerber files of AX88172A demo board by running ORACLE's AutoVue Evaluation Revision tool (30 days evaluation date). Please visit ORACLE's web site (http://www.oracle.com/) for more details.

    Q0017: How to open the PowerPCB PCB layout file of AX88172A demo board?
    A0017: You can open the PowerPCB PCB layout file of AX88172A demo board by running Mentor Graphics PADS Layout Product Evaluation Software (No time limitation but with limited function). Please visit Mentor Graphics' web site (http://www.mentor.com/) for more details.

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