KWorld UB435-Q USB ATSC TV Stick

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KWorld UB435-Q USB ATSC TV Stick

An ATSC USB 2.0 device from KWorld.

There are 3 versions of this device - each has a different VID:UID:

  • 1b80:a340 no version indicator - supported under Linux as of Kernel 2.6.3
  • 1b80:e346 is supported in kernel since 3.13
  • 1b80:e34c add V3 to name - supported under Linux as of Kernel 3.16.??

Original version Overview/Features

  • High speed USB2.0 Plug-and-Play interface for PC or Laptop.
  • USB 2.0 Bus-powered (No power adaptor required).
  • Supports up to 1920x1080i (HDTV).
  • Supports Digital TV (ATSC 8VSB) and Digital Cable TV (unencrypted QAM).
  • Dolby Digital AC3 Audio Output.

Components Used

  • NXP TDA18271HD/C2 tuner
  • LG LGDT3304 digital demodulator
  • Empia EM2870 USB bridge


Identification

Looks and is identical to the older ATSC 340U, but with different coloured packaging, and uses a newer revision (C2) of the tuner. [1] [2] Internal PCB is stamped ATSC_340U Ver:B

USB ID from Output of lsusb: 1b80:a340

UB435-Q V3 Overview/Features

Components Used

  • LG LGDT3305 digital demodulator (neatly stamped "7th Generation VSB/QAM Receiver")
  • NXP 18272/M
  • Empia EM2874B USB bridge

Identification

Looks like original version. Label on back with UPC code has V3 added to name.

USB ID from Output of lsusb: 1b80:e34c

Logs

[  174.897318] Linux video capture interface: v2.00
[  174.900987] em28xx: New device  USB 2875 Device @ 480 Mbps (1b80:e34c, interface 0, class 0)
[  174.900990] em28xx: DVB interface 0 found: bulk
[  174.901043] em28xx: chip ID is em2874
[  175.387994] em2874 #0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x5d3e97ab
[  175.387999] em2874 #0: EEPROM info:
[  175.388002] em2874 #0:       microcode start address = 0x0004, boot configuration = 0x01
[  175.410783] em2874 #0:       AC97 audio (5 sample rates)
[  175.410787] em2874 #0:       500mA max power
[  175.410790] em2874 #0:       Table at offset 0x24, strings=0x206a, 0x048a, 0x0000
[  175.410936] em2874 #0: Identified as KWorld USB ATSC TV Stick UB435-Q V3 (card=93)
[  175.410938] em2874 #0: dvb set to bulk mode.
[  175.410964] usbcore: registered new interface driver em28xx
[  175.413555] em2874 #0: Binding DVB extension
[  175.422065] i2c i2c-10: tda18212: NXP TDA18212HN successfully identified
[  175.422071] DVB: registering new adapter (em2874 #0)
[  175.422077] usb 2-1: DVB: registering adapter 1 frontend 0 (LG Electronics LGDT3305 VSB/QAM Frontend)...
[  175.423590] em2874 #0: DVB extension successfully initialized
[  175.423594] em28xx: Registered (Em28xx dvb Extension) extension

External Links