Compal Broadband Networks CG6640A

Overview
The Intel Cable Modem SoC has "W226TH31 SLHCV DNCE2500GU" printed on the packaging.

"P/N: 141664020000C REV: 01" and "MODEL: CH6640E 2001 03 16" or something similar
 * is silkscreened on the board in the FCC photos (OEM: Arcadyan).

Links of Interest

 * Product page (at CBN)