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Need help with on-board USB pin-out identification

Discussion in 'Hardware' started by Alex Ethridge, Apr 27, 2004.

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  1. Alex Ethridge

    Alex Ethridge Thread Starter

    Joined:
    Apr 10, 2000
    Messages:
    9,124
    I have a Chaintech 7JKD board here and I have the manual; but, the manual is no help as there is no diagram of the USB pins at all in the manual. I have also searched the internet (Google) and I can't come up with the right search terms to give me the help I need.

    This Chaintech board has an on-board USB terminal with the following arrangement:

    1 2 3 4 5
    * * * *
    * * * * *
    6 7 8 9 10

    The above digits do not appear on the board; I put them there for clarity in communication. As you can see, Row 1 has four pins and row two has 5 pins. A pin does not exist at position 5. My experience in the past with other boards is that the odd pin in the arrangement isn't used. So, pins 1 through 4 would be used and pins 6 through 9 would be used, with pin 10 being unused.

    I also have a case here with two built-in front USB ports. Each front port has four wires coming from it. The wires are marked as follows:

    VCC
    DATA -
    DATD +
    GND

    I need help identifying the pins on the board so I can properly connect the USB ports on the front of the case.
     
  2. Jedi_Master

    Jedi_Master

    Joined:
    Mar 12, 2002
    Messages:
    5,520
    Howdy Alex Ethridge...

    Actually it is a little off...


    1 3 5 7 9
    * * * *
    * * * * *
    2 4 6 8 10


    This is the way it should be...

    Pin 1 VERG_FP_USBPWR0 = Power
    Pin 2 VERG_FP_USBPWR0 = Power
    Pin 3 USB_FP_P0- = ? (I think it is a data line )
    Pin 4 USB_FP_P1- = ? (I think it is a data line )
    Pin 5 USB_FP_P0+ = ? (I think it is a data line )
    Pin 6 USB_FP_P1+ = ? (I think it is a data line )
    Pin 7 Ground
    Pin 8 Ground
    Pin 9 Key
    Pin 10 USB_FP_OC0 = ( I have now idea at this moment)...
     
  3. Alex Ethridge

    Alex Ethridge Thread Starter

    Joined:
    Apr 10, 2000
    Messages:
    9,124
    It looks like you are correct on the pin arrangement. I do remember that any time in the past I have hooked these things up, the voltage+ and ground were on the extreme ends and the data lines were always in the center. The odd pin (with no opposing pin) was always unconnected.

    So, you diagram jibes with what I remember.

    Thanks.
     
  4. Jedi_Master

    Jedi_Master

    Joined:
    Mar 12, 2002
    Messages:
    5,520
    Hey no problem, glad to help...

    FYI...been doing some research, and it looks like pin 10 USB_FP_OC0 isn't being used at this time ( what they were going to use it for, who knows )...

    Oh...BTW this was all USB 1.0, haven't looked into 2.0 yet...
     
  5. dustyjay

    dustyjay

    Joined:
    Jan 23, 2003
    Messages:
    12,661
    First Name:
    Jay
    USB 2.0 is the same
     
  6. Jedi_Master

    Jedi_Master

    Joined:
    Mar 12, 2002
    Messages:
    5,520
    Ahhhh...

    Thanks dustyjay, for the info...

    ( I'm a little to lazy too look it up for now )... :D
     
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