Re: Sumvision T680 usb dvb stick (0572:6813)

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Aha. Browser history is a wonderful thing. The USB chip has written on it:
CY7C68013A
As in:
http://www.digchip.com/datasheets/new_parts/200409/1077565.php

Also, there is another strange shaped thing (i.e. not a surface
mounted chip). It has HD BF36A1Dc written on it. It's approximately 2
or 3mm high off the board, 1mm deep and maybe 10 or 12 mm wide. It is
soldered onto the board on the 10x1mm side, black, with the writing on
the side-facing 10x3mm side. Again, couldn't find things online.

Does that help?
On a different track, I checked it works in windows, and managed to
get into linux with the stick in hot (firmware loaded state).
Relevant part of lsusb -v whilst the device is all firmwared-up:

 Bus 005 Device 002: ID 04b4:0680 Cypress Semiconductor Corp.
 Device Descriptor:
   bLength                18
   bDescriptorType         1
   bcdUSB               2.00
   bDeviceClass            0 (Defined at Interface level)
   bDeviceSubClass         0
   bDeviceProtocol         0
   bMaxPacketSize0        64
   idVendor           0x04b4 Cypress Semiconductor Corp.
   idProduct          0x0680
   bcdDevice            6.02
   iManufacturer           1 Digita TV Receiver
   iProduct                2 Digita TV Receiver
   iSerial                 0
   bNumConfigurations      1
   Configuration Descriptor:
     bLength                 9
     bDescriptorType         2
     wTotalLength           64
     bNumInterfaces          2
     bConfigurationValue     1
     iConfiguration          0
     bmAttributes         0xa0
       (Bus Powered)
       Remote Wakeup
     MaxPower              450mA
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        0
       bAlternateSetting       0
       bNumEndpoints           3
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass      0
       bInterfaceProtocol      0
       iInterface              0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x01  EP 1 OUT
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x81  EP 1 IN
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0200  1x 512 bytes
         bInterval               0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x82  EP 2 IN
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x00bd  1x 189 bytes
         bInterval               0
     Interface Descriptor:
       bLength                 9
        bDescriptorType         4
       bInterfaceNumber        1
       bAlternateSetting       0
       bNumEndpoints           1
       bInterfaceClass         3 Human Interface Devices
       bInterfaceSubClass      0 No Subclass
       bInterfaceProtocol      0 None
       iInterface              0
         HID Device Descriptor:
           bLength                 9
           bDescriptorType        33
           bcdHID               1.00
           bCountryCode            0 Not supported
           bNumDescriptors         1
           bDescriptorType        34 Report
           wDescriptorLength      35
          Report Descriptors:
            ** UNAVAILABLE **
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x86  EP 6 IN
         bmAttributes            3
           Transfer Type            Interrupt
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0040  1x 64 bytes
         bInterval              10
 Device Qualifier (for other device speed):
   bLength                10
   bDescriptorType         6
   bcdUSB               2.00
   bDeviceClass            0 (Defined at Interface level)
   bDeviceSubClass         0
   bDeviceProtocol         0
   bMaxPacketSize0        64
   bNumConfigurations      1
 Device Status:     0x0000
   (Bus Powered)



Thanks,
Greg Manning

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