The WorldSpace system is a satellite-based digital radio service for direct-to-home transmission of digital radio programs. The coverage areas of this service are Africa, South America, and parts of Asia.

FEATUREs of the MAS 3506D
– Single-chip WorldSpace Broadcast Channel bit stream demultiplexer
– ISO MPEG 1/2/2.5 Layer 3 decoder
– ISO MPEG compliance tests passed
– Data processing by a high-performance RISC DSP core (MASC)
– Download feature provides additional functionality
– Self-synchronized operation
– Output audio data delivered (in various formats) via an I2S bus (SDO)
– Digital volume control and stereo channel mixer
– Automatic soft-mute function
– WorldSpace SCH-data output via I2C interface
– MPEG ancillary data provided via I2C interface
– Status information accessible via PIO pins or I2C
– “CRC Error”, “MPEG Frame Synchronization” and “BC-Frame-Synchronization” indicators
– Power management for reduced power consumption at lower sampling frequencies
– Low power dissipation (30 mW at fs ≤ 12 kHz,46 mW at fs ≤ 24 kHz, 86 mW at fs > 24 kHz at 2.7 V)
– Supply voltage range: 2.7 V to 3.6 V
– Adjustable built-in DC/DC up-converter for one-cell and two-cell battery operation (typically down to V
bat = 0.9 V)
– Adjustable power supply supervision
– Power-off function