The STi7100 is a low-cost HDTV set-top box decoder for H.264/AVC and MPEG-2. It is a single-chip, high-definition STB decoder including: ST40 CPU core (266 MHz), dual ST231 CPU cores for audio and video decoding (both 400 MHz), transport filtering and descrambling, video decoder (H.264/AVC and MPEG-2), graphics engine and dual display (high-definition (HD) and standard definition (SD)), audio decoder. The STi7100 also features the following embedded interfaces: USB 2.0, DVI/HDMI output, digital audio and video auxiliary input, modem and serial ATA.