The 32-bit high-performance audio processor is suitable for digital televisions, multimedia peripherals, automotive head units, automotive outboard amplifiers, HD-DVD™ and Blu-ray Disc® DVD receivers. This new CS485xx family is still 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 CS485xx family is programmed using the Cirrus proprietary DSP Composer™ GUI development tool. Processing chains may be designed using a drag-and-drop interface to place/utilize functional macro audio DSP primitives. The end result is a software image that is down-loaded to the DSP via serial host or serial boot modes.
Dual MAC cycles per clock
72-bit accumulators are the most accurate in the industry
24k x 32 SRAM, 2k blocks - assignable to data or program
Internal ROM contains a variety of configurable sound enhancement feature sets
Internal watch-dog DSP lock-up prevention
DSP tool set with private keys for protecting customer IP
Configurable for all input/output types
Maximum 32-bit at 192 kHz
Supports 32-bit audio sample I/O between DSP chips
TDM input modes (multiple channels on same line)
192kHz SPDIF transmitter
Multi-channel DSD direct stream digital SACD input
Supports two different input Fs sample rates
Integrated clock manager/PLL -Can operate from external crystal, external oscillator
Input Fs auto detection
Host and boot via serial interface
Configurable GPIOs and external interrupt input
1.8V Core and a 3.3V I/O that is tolerant to 5V input
Low-power mode - Energy Star® ready in low-power mode, 268µW in standby
