
CS48500 Family – Cost-effective Multichannel 32-Bit DSP with Integrated Premium Audio Interfacing & Conversion
Differentiating from Cirrus Logic’s well-known high end multi-standard, multichannel decoders, this new CS485xx family is based on the same high-performance 32-bit fixed point Digital Signal Processor core, but instead is equipped with much less memory, tailoring it for more cost-effective applications associated with multi-channel and virtual-channel sound enhancements.
The CS48520, CS48540 and CS48560 ICs provide a cost effective and simple-to-design audio post-processing solution, delivering an extensive selection of enhanced audio features to maximize the listening experience. Sporting up to 12 channels of audio I/O, onboard sample rate convertor and no need for external memory, the new CS48500 family makes very compact designs possible.
The CS48520/40/60 is programmed using the Cirrus Logic proprietary GUI software development tool called DSP Composer™. The audio processing chain can be designed using a drag and drop interface, simplifying the design process and rendering fast software tweaks. Configuration happens through the SPI™/I2C® serial port and the firmware may be loaded from the internal memory or it may be downloaded through the serial control port.
CS485xx Family Features
- Multichannel 32-bit audio post processing at 150 MHz with dual MACs (300M MACs/Sec)
- CS48520 supports 4 channel 32-bit PCM I/O
- CS48540 supports 8 channel 32-bit PCM I/O
- CS48560 supports 12 channel 32-bit PCM I/O
- 192 kHz S/PDIF Tx
- SPI™/I2C® serial control port
- Low-power standby: 260μW
- Large on-chip RAM & ROM
- Programmable GUI software tool
- Licensed third party audio processing algorithms in ROM, plus extensive library of Cirrus proprietary downloadable and customizable firmware (inquire for full list of available algorithms)
CS485xx Family Key Benefits
- Easy to design – most standard processing features & some 3rd party algorithms in ROM
- DSP Composer GUI simplifies programming
- High performance-to-cost ratio
- No external memory needed
- Complete PCM processor in a single IC:
- Matrix decoders
- Automatic volume leveling/modeling
- Speaker and headphone virtualizers
- Bass management
- Speaker and cabinet tuning
- Automatic speaker/room EQ
- Lip-sync delay
