MyGica D690

Mygica D690 [1] is a DMB-TH (now known as DTMB) USB TV stick from MyGica, targeting the Hong Kong, Macau and Mainland China market, supporting both multi-subcarrier and single-subcarrier modes. It contains a Realtek RTL2836B DMB-T/H Chipset and a ADMTV804 digital tuner IC. The dongle identifed as Vendor_id(VID)=1f4d and Product_id(PID)=689b. USB_VID_GTEK(VID) also is 1f4d.

I can't make this work as of December 2013. Nor can I find any support for it in the media build/kernel.

Getting the RTL2836B should be not to hard , but no clue on the ADMTV804.

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Overview/Features

• USB Interface
• IR Remote

Components Used

• ADMTV804 (tuner)
• RTL2836B (demodulator)

Other Images

• 

  PCB front

• 

  PCB back

Identification

dmesg info

[2276641.455645] usb 2-1.4.1.2: new high-speed USB device number 18 using ehci-pci
[2276641.545895] usb 2-1.4.1.2: New USB device found, idVendor=1f4d, idProduct=689b
[2276641.545908] usb 2-1.4.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[2276641.545911] usb 2-1.4.1.2: Product: USB Device
[2276641.545914] usb 2-1.4.1.2: Manufacturer: realtek
[2276641.545916] usb 2-1.4.1.2: SerialNumber: 00000005

Output from lsusb

Bus 002 Device 019: ID 1f4d:689b G-Tek Electronics Group 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1f4d G-Tek Electronics Group
  idProduct          0x689b 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 3 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          4 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 
      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     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              6 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               8
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x05  EP 5 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               8
Device Status:     0x0001
  Self Powered

Making it Work

Can't make it work yet

Firmware

I don't think this device needs an F/W.

Drivers

Don't know.

Sample Kernel Output

Not working yet..

Remote Control Support

Has a IR remote, untested.

External Links

• http://www.everbesthk.com/1-home/highlight/355-23JUL12/mpress.htm