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???
04/17/07 15:36
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 		 #137377 - Same problem - with setup details - HELP!
Responding to: ???'s previous message
Upon connecting the board, the device is 'recognised' as an "Unknown Device", with the following parameters found through a usb debug utility:

Device Descriptor:
bcdUSB: 0x0000
bDeviceClass: 0x00
bDeviceSubClass: 0x00
bDeviceProtocol: 0x00
bMaxPacketSize0: 0x00 (0)
idVendor: 0x0000
idProduct: 0x0000
bcdDevice: 0x0000
iManufacturer: 0x00
iProduct: 0x00
iSerialNumber: 0x00
bNumConfigurations: 0x00
ConnectionStatus: DeviceFailedEnumeration
Current Config Value: 0x00
Device Bus Speed: Low
Device Address: 0x00
Open Pipes: 0

The chip installed is labelled as AT89C5131-IM on the chip, and AT89C5131A-IM on the PCB. The USB and power lights are lit ok.

I am using a new DC 6V power supply for the board (board has 7 - 12v label on power supply, regulator is 7805 (5v) - shouldnt affect anything should it?), and attempting to install under windows xp.

This is my first venture into embedded device programming, so any help would be very much appreciated!!!

List of 29 messages in thread
TopicAuthorDate
Atmel 89C5131A-M            01/01/70 00:00      
   bootloader            01/01/70 00:00      
      Thanks Oleg            01/01/70 00:00      
   USB interface for ISP programming.            01/01/70 00:00      
      did you try search the forum?            01/01/70 00:00      
      same problem            01/01/70 00:00      
      need some help            01/01/70 00:00      
         Have you looked here?            01/01/70 00:00      
            no success            01/01/70 00:00      
               Driver            01/01/70 00:00      
      Same problem - with setup details - HELP!            01/01/70 00:00      
         Re:6V            01/01/70 00:00      
            Well boy is my face red....            01/01/70 00:00      
   Yes, I did search on this forum            01/01/70 00:00      
      Atmel 89C5131A USB driver.            01/01/70 00:00      
         usb driver            01/01/70 00:00      
   Atmel 89C5131A USB Driver            01/01/70 00:00      
      usb            01/01/70 00:00      
         Atmel 89C5131A USB Driver            01/01/70 00:00      
            i do not know your chip, but            01/01/70 00:00      
               Always exceptions are there :-)            01/01/70 00:00      
                  well, now I have seen one            01/01/70 00:00      
      thank you            01/01/70 00:00      
         have you measured the PLLF pin            01/01/70 00:00      
            Please check the PLLF            01/01/70 00:00      
               XTAL for USB            01/01/70 00:00      
            89c5131            01/01/70 00:00      
            89c5131            01/01/70 00:00      
   from the peanut gallery            01/01/70 00:00      

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