DVB-C video and DOCSIS 3.0 data combine in receivers

07 January 2014

This week at CES, a series of receivers from MaxLinear are claimed to help boost video and data services to homes.

Designed for multi-channel video set-top box design, with up to 200Mbit/s data connection for over-the-top (OTT) video and other data services, the MxL21x FSC (Full-Spectrum Capture) receivers support two to four QAM/DVB-C video channels and four DOCSIS 3.0 channels.
MaxLinear says that cable set-top-box OEMs can use the receivers to design less expensive and less complex boxes that deliver both multi-channel broadcast cable TV services, including personal video recording and fast channel change, and high-speed Internet access for OTT Internet video and other data services.

The FSC-based front-end receives the full 1GHz cable spectrum and devices support two to four QAM demodulators for transport stream output to a MPEG decoder SoC, and a four-channel wideband IF output for connecting to an Intel Puma5 DOCSIS cable modem chip.
Two I²C buses enable independent control of the receivers  by both the MPEG SoC and the Intel Puma5, allowing the MPEG decoder and the DOCSIS modem to exclusively select the channels needed for video and data, respectively, without any communication between the MPEG decoder and DOCSIS chips.

The MxL212, MxL213 and MxL214 supports remote monitoring functions including signal power levels across the full spectrum and channel equaliser parameter settings. This remote spectrum monitoring capability allows cable MSOs to resolve network problems at customer premises remotely.

MaxLinear has partnered with ZCorum to offer a remote spectrum analyser for set-top boxes based on FSC tuners, which will be demonstrated at CES.

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