Conexant Fusion 878A

Conexant Fusion 878A (CX23878)

A PCI interface chipset from Conexant that provides video decoder functionality.

It is supported under Linux by the bttv and associated kernel driver modules.

Overview/Features

An updated version of the former Bt878 chipset (which, upon coming under the Conexant banner, was also sometimes known or referred to as the Fusion Bt878). With the newer Fusion 878A's release, the "Bt" (for Brooktree) was dropped from the product nomenclature. Conexant also refers to the 878A chip by the part number CX23878.

One of the updates that the 878A features is the inclusion of support for the handling of MPEG2 TS used by DVB/DTV services.

insert Bt87x vs 878A comparison table here

Features

--Jimbley 02:49, 10 May 2009 (CEST)

• Composite input
• S-Video input
• I2S digital audio input
• FM Radio
• Mono audio input(microphone)
• I2C
• VBI (teletext, closed captioning and Intercast)
• GPIO
• PCI v2.2
• ODFM and VSB
• ATSC, PAL/SECAM/NTSC support

Note: Output from the lspci command is slightly misleading in that it identifies the 878A chipset by name of the Bt878 chipset, e.g.:

0000:02:05.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)

However, the Bt878 name should be reserved for the older chips which only supported analog applications and lacked facilities for digital TV applications. In other words, if you have a 878-based digital TV device, you can be certain that the chip is actually the Fusion 878A, and not the older Bt878

External Links

• Fusion 878A Datasheet on Conexant.com