DESCRIPTION

· The SAF784x is a single-chip CD audio decoder with integrated MP3/WMA decoding, digital servo, audio DAC, sample-rate converter, preamplifier, laser driver, and ARM7TDMI-S microprocessor.

· It includes all necessary ROM and RAM, featuring an internal re-programmable Flash ROM, designed for low-cost compressed audio CD applications.

FEATURES

· 32-bit ARM7 RISC microprocessor with a maximum operating frequency of 76 MHz, supporting both 32-bit and 16-bit instruction sets.

· On-chip decoding of MP3/WMA compressed audio streams and embedded memories including 130 kB mask-programmed ROM, 42 kB boot ROM, 64 kB Flash ROM, and 110 kB SRAM.

· Programmable clock frequency for ARM microprocessor, block decoder for C3 error correction, and sample-rate converter for audio rates from 8 kHz to 48 kHz to 44.1 kHz.

· Microprocessor access to digital diode input signals and servo output signals, programmable PDM outputs for stepper motor control, and access to audio streams for processing algorithms like bass boost and volume control.

· Four general-purpose analog inputs for external analog signals via on-chip ADCs.

APPLICATIONS

· Low-cost system implementation for MP3 and WMA decoding in CD audio devices.

· Audio processing applications utilizing the ARM microprocessor for enhanced sound quality and control.