Em28xx devices: Difference between revisions
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* [http://www.linuxtv.org/wiki/index.php/Xceive_XC3028/XC2028#How_to_Obtain_the_Firmware See section How to Obtain the Firmware in Xceive XC3028/XC2028 page] |
* [http://www.linuxtv.org/wiki/index.php/Xceive_XC3028/XC2028#How_to_Obtain_the_Firmware See section How to Obtain the Firmware in Xceive XC3028/XC2028 page] |
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==About em28xx models== |
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==em2800/em2820/em2821/em2840== |
===em2800/em2820/em2821/em2840=== |
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* used on older analog only device designs. These chips have support for USB Audio Class; so, audio module is snd-usb-audio |
* used on older analog only device designs. These chips have support for USB Audio Class; so, audio module is snd-usb-audio |
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* [[Em2820/vgear]] |
* [[Em2820/vgear]] |
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* supports DVB/ATSC. Doesn't provide USB Audio Class. Instead, digital audio is provided via an USB Vendor Class; so, these chips require the em28xx-alsa module for digital audio to work. |
* supports DVB/ATSC. Doesn't provide USB Audio Class. Instead, digital audio is provided via an USB Vendor Class; so, these chips require the em28xx-alsa module for digital audio to work. |
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* [[Em2880/remote]] |
* [[Em2880/remote]] |
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* Seem to be used by some [[Webcams]]. |
* Seem to be used by some [[Webcams]]. |
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Development -- originally by 4 authors. One of the authors, mrec, forked. |
Development -- originally by 4 authors. One of the authors, mrec, forked. |
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Revision as of 03:25, 6 September 2008
This article discusses some USB interface chipset families produced by EMPIA, and, in addition, addresses the driver that support these chips.
How to compile latest em28xx driver?
Firmware
Information
How to obtain it?
About em28xx models
em2800/em2820/em2821/em2840
- used on older analog only device designs. These chips have support for USB Audio Class; so, audio module is snd-usb-audio
em2820/em2840 based devices
em2880/2881/2883
- supports DVB/ATSC. Doesn't provide USB Audio Class. Instead, digital audio is provided via an USB Vendor Class; so, these chips require the em28xx-alsa module for digital audio to work.
em2880 based devices
- KWorld 350U DVB-T
- KWorld DVB-T 355U
- KWorld 310U
- KWorld USB2800
- Em2880/PinnaclePCTV
- Videology 20K14XUSB webcam
Some Misc stuff
The following needs to be cleaned up and/or integrated into the article:
em2750
- Seem to be used by some Webcams.
About Driver
Development -- originally by 4 authors. One of the authors, mrec, forked.
Feature Support
- in-kernel em28xx driver: radio and analog TV (including broadcast audio) are working fine. Support for DVB/ATSC is not present yet.
- no firmware is required for em28xx ICs ... note: though em28xx based devices paired with some tuners will need firmware for the tuner (i.e. there are em28xx based devices paired with a XCeive XC3028 or XC2028 tuner, which require a generic firmware from Xceive).
External Links
- EMPIA EM2880 datasheet
- EMPIA EM2870 datasheet
- EMPIA EM2880 product page
- EMPIA EM2820/EM2840 product page
- EMPIA EM2750 product page
- mcentral.de wiki offers alternative, out of kernel, drivers for some em28xx based devices:
- mrec's page on the em2880 ... note: that the information seems heavily tied to devices which utilise a xceive xc3028 tuner ... hence you may also want to read his xc3028 page for related info
- mrec's page on the em2820