·完全集成的声频和射频处理包括ADC和DAC ·集成有二个独立的射频信道

at a glance:

• Fully integrated audio and radio processing includes ADCs and DACs.
• The device integrates two independent radio-reception paths.

The SAF7730 mixed-signal DSP targets the automotive-car-radio market. The multicore DSP integrates several Philips DSP cores for audio and radio processing, and it integrates analog IF input, digital-radio and audio processing, sample-rate converters, and digital and analog audio output into a single device. The DSP core features a double Harvard architecture and uses a fixed-point, 2’s complement notation for 24 bits of data and 12 bits of coefficients. It combines a high clock frequency and double-precision arithmetic, allowing designers to obtain high total-harmonic-distortion and SNR performance.

Addressing and processing modes: The SAF7730 supports direct and relative addressing. Relative addressing supports decrementing the pointer by one or incrementing it by one or two.

Special instructions or integral-peripheral functions: The SAF7730 includes a delay line unit, a data I/O unit, a multiplier-accumulator unit, and a microprocessor interface for I²S control.

Development support: Philips offers an assembler, a simulator, an application board, and a real-time GUI-based monitor program. Philips has defined assembler-code-flow and application templates to enable integration of library modules from the audio-feature library, which includes a set of efficient filter implementations, into target applications.