CX24155
features all the major subsystems required to implement the core system and decoder electronics of a DBS interactive TV STB. This includes an MPEG-2 A/V decoder (Dolby Digital audio is optional), transport processor, a 32-bit RISC CPU, a 2D graphics accelerator, TV e e h
U 4 t m o .c encoder, QPSK demodulator, channel 3/4 RF modulator, a video/graphics display positing controller and a set of peripheral I/O ports for set-top box front and back panel connectors. For a plete system hardware design, the only additional ponents required are a tuner, modem codec, audio DAC, SDRAM and flash memory ICs. This high level of integration delivers the low-cost system bill-of-materials sought after by mainstream digital DBS multichannel TV operators.
An advanced interactive set-top receiver will include sophisticated middleware to run downloadable applications using a high-speed return channel. Example applications include Advanced EPGs, online games, shopping, and interactive polling. The...
