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CS47024 Datasheet, PDF (1/32 Pages) Cirrus Logic – CS470xx Data Sheet | |||
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CS470xx
CS470xx Data Sheet
Features
The CS470xx family is a new generation of audio
system-on-a-chip (ASOC) processors targeted at high
ï§ Cost-effective, High-performance 32-bit DSP
fidelity, cost sensitive designs. Derived from the highly
ï§ 300,000,000 MAC/S (multiply accumulates per second)
successful CS48500 32-bit fixed-point audio enhancement
processor family, the CS470xx further simplifies system
ï§ Dual MAC cycles per clock
design and reduces total system cost by integrating the S/
ï§ 72-bit accumulators are the highest precision in the
industry
ï§ 32K x 32-bit SRAM with three 2K blocks assignable to
either Y data or program memory
PDIF Rx, S/PDIF Tx, analog inputs, analog outputs, and
SRCs. For example, a hardware SRC can down-sample a
192 kHz S/PDIF stream to a lower Fs to reduce memory
and MIPS requirements for processing. This integration
effectively reduces the chip count from 3 to 1, which allows
ï§ Integrated DAC and ADC Functionality
smaller, less expensive board designs.
ï§ 8â Channels of 24-bit DAC output: 108dB DR, â98 dB
THD+N
ï§ 4â Channels of 24-bit ADC input: 105dB DR, â98 dB
THD+N
Target applications include:
ï§ Automotive head units and outboard amplifiers
ï§ Automotive processors and automotive integration hubs
ï§ Integrated 5:1 analog mux feeds one stereo ADC
ï§ Digital TV
ï§ Configurable Serial Audio Inputs and Outputs
ï§ MP3 docking stations
ï§ Integrated 192 kHz S/PDIF Rx
ï§ Integrated 192 kHz S/PDIF Tx
ï§ Supports 32-bit serial data @ 192 kHz
ï§ Supports 32-bit audio sample I/O between DSP chips
ï§ TDM I/O modes
ï§ Supports Different Sample Rates (Fs)
ï§ Three integrated hardware SRC blocks
ï§ Output can be master or slave
ï§ Supports dual-domain Fs on S/PDIF vs. I²S inputs
ï§ DSP Tool Set with Private Keys Protect Customer IP
ï§ Integrated Clock Manager/PLL
ï§ Flexibility to operate from internal PLL, external crystal,
external oscillator
ï§ Input Fs Auto Detection w/ µC Acknowledgement
ï§ AVR and DVD RX
ï§ DSP controlled speakers (subwoofers, sound bars)
The CS470xx is programmed using the simple yet powerful
Cirrus proprietary DSP Composer⢠GUI development and
pre-production tuning tool. Processing chains can be
designed using a drag-and-drop interface to place/utilize
functional macro audio DSP primitives and custom audio
filtering blocks. The end result is a software image that is
downloaded to the DSP via serial control port.
The Cirrus Framework⢠programming environment offers
Assembly and C language compilers and other software
development tools for porting existing code to the CS470xx
family platform.
The CS470xx is available in a 100-pin LQFP package with
exposed pad for better thermal characteristics. Both
Commercial (0°C to +70°C) and Automotive (â40°C to
+85°C) temperature grades.
ï§ Host Control and Boot via I²C⢠or SPI⢠Serial Interface Ordering Information:
ï§ Configurable GPIOs and External Interrupt Input
See Section 6 for ordering information.
ï§ 1.8V Core and a 3.3V I/O that is tolerant to 5V input
ï§ Low-power Mode
ââ â features differ on CS47024, CS47028, or CS47048.
See Table 3-1.
http://www.cirrus.com
Copyright ï£ Cirrus Logic, Inc. 2012
(All Rights Reserved)
DS787PP9
JUL '12
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