描述 Description

The MxL268 is a cable gateway front-end SoC that supports 32 downstream channels and 8 upstream channels (32 x 8). The MxL268 targets DOCSIS and Euro-DOCSIS cable gateway designs.

The MxL268 IC captures the full, 1GHz cable bandwidth, and is capable of providing 24 channels of digitized I/Q data and 8 channels of demodulated data over SerDes. The MxL268 IC also receives digitized upstream signals from a DOCSIS back-end IC using the SerDes interface, and outputs upstream analog signals in the 5MHz to 85MHz range to an external PGA.

With its high integration and low-power consumption, the MxL268 enables high-speed broadband data solutions with a compact board design and low BOM cost. The MxL268 IC is controlled through an I2C interface and operates using 3.3V, 1.8V, and 1.1V supplies. The MxL268 is available in a small 7mm x 7mm footprint 48-pin QFN package.

特性 Features

·Full-Spectrum Capture? (FSC?) cable tuner capable of receiving QAM channels from 44MHz to 1006MHz without external SAW filters
·Remote network monitoring, including spectrum reporting
·Two SATA 3.0-based SerDes interfaces
·Eight QAM demodulators
·Supports up to 32 downstream channels and 8 upstream channels
·Outputs a DOCSIS upstream signal from 5MHz to 85MHz
·1.98W power consumption in a 32-channel receiver application
·686mW in Low-Power Mode (LPM)
·Downstream channel bandwidth that is configurable to 6MHz or 8MHz
·Reference clock output is provided to the DOCSIS back-end IC for SerDes communication
·I2C-compatible digital control interface

應(yīng)用 Application

·EMTAs
·Cable modems
·Cable gateways