Motorola MB7621

Overview
Approved by Comcast Xfinity, Cox, Charter Spectrum, Time Warner Cable.

24x8 DOCSIS 3.0 cable modem
 * 24 downstream channels for speeds up to 1,000 Mbps
 * 8 upstream channels for speeds up to 246 Mbps

The product page says, "Advanced design with Broadcom integrated circuit technology."

Links of Interest
Datasheet