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