Philips SAA7146: Difference between revisions

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(snd-aw2 warning, feel free to place this warning where it will do more good)
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A [[PCI interface chipsets|PCI interface chipset]] initially intended as Multimedia interface for analog Audio and Video. Has been raped to pack the sampled [[MPEG-2 Transport Stream]] data into the video lines. Works surprisingly well in most setups, only a few have problems with high data loss. Superceeded by the [[Philips SAA7134|SAA7134]] which has a digital stream interface.
A [[PCI interface chipsets|PCI interface chipset]] from [[Philips]] initially intended as Multimedia interface for analog Audio and Video.


The IC was adjusted to work with [[DVB]] by packing the sampled [[MPEG-2 Transport Stream]] data into the video lines of the IC. This hackish approach works surprisingly well in most setups, and only a few have problems with high data loss. The saa7146 chipset's direct successor, the [[Philips SAA7134|SAA7134]], has a a dedicated digital stream interface.
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Used e.g. by the old [[Siemens]] DVB cards, most [[TechnoTrend]] PCI cards, the [[KNC1]] DVB cards and [[TerraTec]] DVB cards.

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The SAA7146 is used on a number of older generation DVB cards, such as the [[Siemens]] DVB cards, [[TechnoTrend]] PCI cards, [[KNC1]] DVB cards and [[TerraTec]] DVB cards.


{{Box Warning|In 2.6.27 and possibly other kernel versions, the Alsa snd-aw2 driver will blindly grab all saa7146 devices preventing them from working. Blacklist the snd-aw2 driver to prevent this happening.}}
{{Box Warning|In 2.6.27 and possibly other kernel versions, the Alsa snd-aw2 driver will blindly grab all saa7146 devices preventing them from working. Blacklist the snd-aw2 driver to prevent this happening.}}


== Links ==
== External Links ==
[http://www.linuxdvb.tv/documentation/SAA7146A_1.pdf Datasheet]
* [http://www.linuxdvb.tv/documentation/SAA7146A_1.pdf Datasheet]
* [http://www.mihu.de/linux/saa7146 Michael Hunold's driver information page] also contains some data
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[[Category:Decoder]]

[[Category:Hardware]]
[[Category:Hardware]]
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[[Category:Decoder]]

Revision as of 00:13, 6 December 2008

A PCI interface chipset from Philips initially intended as Multimedia interface for analog Audio and Video.

The IC was adjusted to work with DVB by packing the sampled MPEG-2 Transport Stream data into the video lines of the IC. This hackish approach works surprisingly well in most setups, and only a few have problems with high data loss. The saa7146 chipset's direct successor, the SAA7134, has a a dedicated digital stream interface.

The SAA7146 is used on a number of older generation DVB cards, such as the Siemens DVB cards, TechnoTrend PCI cards, KNC1 DVB cards and TerraTec DVB cards.

Warning !!!

align=left In 2.6.27 and possibly other kernel versions, the Alsa snd-aw2 driver will blindly grab all saa7146 devices preventing them from working. Blacklist the snd-aw2 driver to prevent this happening.

External Links

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