CS4970x4 Data Sheet FEATURES High Definition Audio Decoder DSP Family with Dual 32-bit Engine Technology  Multi-standard 32-bit high-definition audio decoding plus post-processing  Supports high-definition audio formats including: — Dolby Digital® Plus — Dolby® TrueHD — DTS-HD® High Resolution Audio — DTS-HD Master Audio™ — DTS Express™ 5.1  Supports legacy audio formats and a wide array of postprocessing — Dolby Digital® EX, Dolby Pro Logic® II, IIx, IIz 7.1, Dolby Headphone® 2, Dolby Virtual Speaker® 2, Dolby Volume® (original), Dolby Volume 258 (lite), Audistry® — DTS-ES 96/24™ Discrete 7.1, DTS-ES™ Discrete 7.1, DTS-ES™ Matrix 6.1, DTS Neo:6®, DTS Neural Surround™ DTS Surround Sensation Speaker — MPEG-2 AAC™ LC 5.1 — SRS® Circle Surround® II, SRS Circle Surround Auto, SRS Circle Surround Decoder Optimized, SRS TruVolume™ 7.1 (V 2.1.0.0), SRS TruSurround HD/HD4®, SRS WOW HD™, SRS CS Headphone™, SRS Circle Cinema 3D™, SRS Studio Sound HD™ — THX® Ultra2™, THX Select2™  Cirrus Logic’s Applications Library — Cirrus Original Multi-Channel Surround 2 (COMS2), Cirrus Band XpandeR™, Cirrus Virtualization Technology (CVT), Cirrus Intelligent Room Calibration 2 (IRC2), Cirrus Bass Enhancement (CBE) — Crossbar Mixer, Signal Generator — Advanced Post-Processors including: 7.1 Bass Manager Quadruple Crossover, Tone Control, 11- Band Parametric EQ, Delay, 2:1/4:1 Decimator, 1:2/1:4 Upsampler Up to 12 Channels of 32-bit Serial Audio Input Customer Software Security Keys 16 Ch x 32-bit PCM Out with Dual 192 kHz S/PDIF Tx Two SPI™/I2C™ ports Large On-chip X, Y, and Program RAM & ROM SDRAM and Serial Flash Memory Support The CS4970x4 DSP family is an enhanced version of the CS4953xx DSP family with higher overall performance. In addition to all the mainstream audio processing codes in onchip ROM that the CS4953xx DSP offers, the CS4970x4 device family also supports the decoding of major high-definition audio formats. Additionally, the CS4970x4, a dual-core device, performs the high-definition audio decoding on the first core, leaving the second core available for audio post-processing and audio enhancement. The CS4970x4 device supports the most demanding audio post processing requirements. It provides an easy upgrade path to systems currently using the CS495xx or CS4953xx device with minor (or no) hardware and software changes. Ordering Information See page 27 for ordering information. Parallel Control 16 Ch PCM Audio Out Ext. Memory Controller Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this produ

CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family

CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family List of Tables Table 1. CS4970x4 Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 2. Device and Firmware Selection Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. CS4970x4 DSP Memory Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 4. Ordering Information . . . . . . . . . . . . . . . . . ....

'CIRRUS LOGIC CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family 1 Documentation Strategy The CS4970x4 data sheet describes the CS4970x4 family of multichannel audio decoders. This document should be used in conjunction with the following documents when evaluating or designing a system around the CS4970x4 family of processors. Table 1. CS4970x4 Related Documentation The scope of the CS4970x4 data sheet is primarily to provide hardware specifications of the CS4970x4 family of devices. This includes hardware functionality, characteristic data, pinout, and packaging information. The...

'CIRRUS LOGIC CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family Table 2. Device and Firmware Selection Guide 1. Additional processing (MPMA, MPMB/VPM, PPM) post any of the HD audio decoders may be limited. Contact your Cirrus Logic FAE for the latest concurrency matrix. 2. Downsampling and Upsampling functionality is located in the operating system. The Cirrus Decimator (Down-Sampler) is also available as a separate post-processing module that is described in the application note AN288PPI. 3. The indicated HD audio decoder algorithms require external SDRAM. Consult your Cirrus...

CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family • OS/Kernel - Encompasses all non-audio processing tasks, including loading data from external memory, processing host messages, calling audio-processing subroutines, auto-detection, error concealment, etc. • Decoders - Any module that initially writes data into the audio I/O buffers, e.g. AC-3™, DTS, PCM, etc. All the decoding/processing algorithms listed require delivery of PCM or IEC61937-packed, compressed data via I2S- or LJ-formatted digital audio to the CS4970x4 from A/D converters, SPDIF Rx, HDMI Rx, etc. • Matrix-processors...

'CIRRUS LOGIC CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family Table 3. CS4970x4 DSP Memory Sizes 4.1.2 DMA Controller The powerful 12-channel DMA controller can move data between 8 on-chip resources. Each resource has its own arbiter: X, Y, and P RAM/ROMs on DSP A; X, Y, and P RAM/ROMs on DSP B; external memory; and the peripheral bus. Modulo and linear addressing modes are supported, with flexible start address and increment controls. The service interval for each DMA channel as well as up to 6 interrupt events, is programmable. 4.2 On-chip DSP Peripherals 4.2.1 Digital Audio...

'CIRRUS LOGIC CS4970x4 Data Sheet 32-bit High Definition Audio Decoder DSP Family through master boot from an external FLASH or through host control. A built-in crystal oscillator circuit with a buffered output is provided. The buffered output frequency ratio is selectable between 1:1 (default) or 2:1. 4.3 DSP I/O Description 4.3.1 Multiplexed Pins Many of the CS4970x4 pins are multi-functional. For details on pin functionality please refer to the CS4970x4 System Designer’s Guide. 4.3.2 Termination Requirements Open-drain pins on the CS4970x4 must be pulled high for proper operation. Please refer...