Conexant CX2310x

The Conexant CX2310x is a USB video and broadcast-audio decoder family from Conexant.

Overview/features

The CX23102 has all the features that other chips in the family share. The CX23100/1/3 are cut-down versions of this chip.

CX23102

• USB 1.1/2.0 support
• Video broadcast formats:NTSC/PAL/SECAM
• Audio broadcast formats:BTSC/EIAJ/A2/NICAM/AM
• 24 GPIO pins
• 3 I2c master busses
• Inputs:
  • Stereo Analog Audio
  • Two Chroma/One PrPb/One SIF
  • Four CVBS/Luma Inputs
  • Tuner
  • Serial Transport stream
  • Parallel/Serial Transport stream
• Outputs
  • I2S 16/24 bit 32/44.1/48kHz
  • Audio Master Clock

Feature comparison chart

According to Conexant product brief, there are following differences between versions of chipset:

Capability	CX23100	CX23101	CX23102	CX23103
USB interface	✔ Yes	✘ No	✔ Yes	✔ Yes
Broadcast Video	✘ No	✔ Yes	✔ Yes	✔ Yes
Broadcast Audio	✘ No	✔ Yes	✔ Yes	✘ No
Integrated Analog IF Demodulator	✘ No	✔ Yes	✔ Yes	✘ No
Transport Stream Interface	✔ Yes	✘ No	✔ Yes	✔ Yes

Linux support

The CX2310x series of chips is supported in Linux through the cx231xx driver (CX23103 is currently unsupported). There are two reference designs by Conexant that are explicity named in the driver. All other cards are listed as 'unknown'.

Boards

• Hauppauge USB-Live-2
• Hauppauge WinTV-USB2-FM
• Hauppauge WinTV-HVR-850 (there are three versions; only model 01200 with ID 2040:b140 first sold in early 2010 uses CX23102)
• AVerMedia DVD EZMaker 7 (C039)
• AVerMedia AVerTV Hybrid Volar HD (H830)
• OTG102 (Diamond VC500, Mygica/Geniatech EZGrabber2, August VGB100, etc.)
• Elgato Video Capture V2 - this board works with the cx231xx driver, using a patch sent to Linux-media mailing list on 28/11-2012. Note that Elgato Video Capture V1 uses Em28xx_devices driver.
• KWorld UB445-U ATSC Hybrid TV Stick
• KWorld UB445-U2 ATSC Hybrid TV Stick
• KWorld UB430-AF ISDB-T Hybrid TV Stick
• Hauppauge WinTV-HVR-930C-HD
• AVerMedia AVerTV HD PRO (H868R)
• Gigabyte U8300
• TBS5280 USB DVB-T2/T/C Dual Tuner TV Box
• PixelView Xcapture USB
• Pixelview PlayTV USB Hybrid
• Iconbit Analog Stick U100 FM
• Manhattan Hi-Speed USB Audio/Video Grabber
• EzCAP USB Video Capture Pro (uniquely, this one has YPbPr component inputs)
• SilverCrest USB 2.0 Video Grabber SVG 2.0 A2 (CX23103)
• Sveon STV24
• TerraTec Grabby v3/DK-8713 V1.0 (the previous versions of the Grabby use the Em28xx_devices driver)
• Astrometa DVB-T2 (2015 version)

External links

• Conexant CX23102 Product Page
• Conexant CX23103 Product Page