Gadmei USB TVBox UTV382 (id 0x1f71:0x3301)

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Gadmei usb tvbox utv382

A small USB based analogue TV-FM Tuner (with composite input) using UTV007, RDA5802N and BCK0XM chips .

Overview/Features

Analog TV, FM Radio, Composite Video-in

  • USB 2.0 interface
  • Inputs: IEC connector 75 Ohm (COAX), Composite Video (Cinch)

Components Used

From physical inspection of the PCB.

  • 5807m (FM Tuner)
  • UTV007 (AV capturing)
  • 24C08A (EEPROM)
  • 2136 (Unsure, Could be a Silicon Labs Si2136 Analog TV Tuner chip)

Other Pictures

  • Gadmei usb TVBOX Front

    Gadmei usb TVBOX Front

  • Gadmei usb TVBOX Front

    Gadmei usb TVBOX Front

  • Chip utv007

    Chip utv007

  • Chip rda5802n (FM Tuner)

    Chip rda5802n (FM Tuner)

  • Chip BCK0XM

    Chip BCK0XM

  • Gadmei USB TVBox Front-side

    Gadmei USB TVBox Front-side

  • Gadmei USB TVBox Back-side

    Gadmei USB TVBox Back-side

  • Close-up of the UTV007 and 24C08A chips

    Close-up of the UTV007 and 24C08A chips

  • Close-up of the 2136-30-BCKOOR-1625 chip

    Close-up of the 2136-30-BCKOOR-1625 chip

  • Close-up of the 5807M chip

    Close-up of the 5807M chip

Making it work

Linux kernel driver, enable CONFIG_VIDEO_USBTV: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/media/usb/usbtv

Change usbtv-core.c

Original code: 

static struct usb_device_id usbtv_id_table[] = {
	{ USB_DEVICE(0x1b71, 0x3002) },
	{}
};

New code: 

static struct usb_device_id usbtv_id_table[] = {
	{ USB_DEVICE(0x1b71, 0x3002) },
	{ USB_DEVICE(0x1f71, 0x3301) },
	{}
};

Make & install.

Note: This seems to only enable the device to capture AV, not to do TV or FM reception.

Check

udevadm monitor

Plug in device. 

KERNEL[3456.908366] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4 (usb)
KERNEL[3456.908995] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb)
KERNEL[3456.909054] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/video4linux/video0 (video4linux)
KERNEL[3456.909115] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1 (sound)
KERNEL[3456.909268] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1/controlC1 (sound)
KERNEL[3456.909424] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1/pcmC1D0c (sound)
UDEV  [3456.913882] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4 (usb)
UDEV  [3456.915343] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1 (sound)
UDEV  [3456.917357] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1/pcmC1D0c (sound)
KERNEL[3456.917375] change   /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1 (sound)
UDEV  [3456.917784] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0 (usb)
UDEV  [3456.919448] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1/controlC1 (sound)
UDEV  [3456.921143] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/video4linux/video0 (video4linux)
UDEV  [3456.924714] change   /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/sound/card1 (sound)

For example start tvtime : 

tvtime -d /dev/video0 -x /dev/snd/controlC1

Identification

  • Output of lsusb -v:

$ lsusb -v -d 1f71:3301 

Bus 002 Device 007: ID 1f71:3301  
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass            0 (Defined at Interface level)
 bDeviceSubClass         0 
 bDeviceProtocol         0 
 bMaxPacketSize0        64
 idVendor           0x1f71 
 idProduct          0x3301 
 bcdDevice            1.00
 iManufacturer           3 Gadmei
 iProduct                4 USB TV Box
 iSerial                 2 330000000009
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength           83
   bNumInterfaces          1
   bConfigurationValue     1
   iConfiguration          0 
   bmAttributes         0x80
     (Bus Powered)
   MaxPower              500mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           4
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass      0 
     bInterfaceProtocol    255 
     iInterface              0 
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0000  1x 0 bytes
       bInterval               1
     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
     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               4
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       1
     bNumEndpoints           4
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass      0 
     bInterfaceProtocol    255 
     iInterface              0 
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            1
         Transfer Type            Isochronous
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x1400  3x 1024 bytes
       bInterval               1
     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     0x0100  1x 256 bytes
       bInterval               0
     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               4
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)

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