CS47048 Datasheet, PDF (1/34 Pages) Cirrus Logic – Audio SOC Processor Family

CS47048 Data Sheet
FEATURES
‰ Cost-effective, High-performance 32-bit DSP
— 300,000,000 MAC/S (multiply accumulates per second)
— Dual MAC cycles per clock
— 72-bit accumulators are the most accurate in the industry
— 32K x 32-bit SRAM with three 2K blocks assignable to either
Y data or program memory.
‰ Integrated DAC & ADC Functionality
The CS47048 family is a new generation of audio system-on-a-
chip (ASOC) processors targeted at high fidelity, cost sensitive
designs. Derived from the highly successful CS48500 32-bit
fixed point audio enhancement processor family, the CS47048
further simplifies system design and reduces total system cost
by integrating the S/PDIF Rx, S/PDIF Tx, analog inputs, analog
outputs, and SRCs to simplify system design. For example, a
hardware SRC can down-sample a 192kHz 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 smaller, less expensive board designs.
— 8 Channels of DAC output: 108dB DR, 98dB THD+N
Target applications are:
— 4 Channels of ADC input: 105dB DR, 98dB THD+N
— Integrated 5:1 analog mux feeds one stereo ADC
‰ Configurable Serial Audio Inputs/Outputs
T _{— Integrated 192 kHz S/PDIF Rx}
— Integrated 192 kHz S/PDIF Tx
F _{— Supports 32-bit Serial Data @ 192 kHz}
— Supports 32-bit audio sample I/O between DSP chips
A ^{— TDM I/O modes (Up to 8 channels per line)}
‰ Supports Different Fs Sample Rates
— Three Integrated hardware SRC blocks
R _{— Output can be master or slave}
— Supports dual-domain Fs on inputs (S/PDIF Rx and I²S)
D _{— Supports dual-domain Fs on outputs (S/PDIF Tx and I2S)}
‰ DSP Tool Set w/ Private Keys Protect Customer IP
L ‰ Integrated Clock Manager/PLL
I _{— Flexibility to operate from internal PLL, external crystal,}
external oscillator
IA ^H ‰ Input Fs Auto Detection w/ µC Acknowledgement
° ° ° ° _{‰ Host & Boot via SPI / I}²_{C Serial Interface}
T P _{‰ Configurable GPIOs and External Interrupt Input}
‰ 1.8V Core and a 3.3V I/O that is tolerant to 5V input
N ^L ‰ Low-power Mode: 620µW
— Automotive Head Units & Outboard Amplifiers
— Automotive Processors & Automotive Integration Hubs
— Digital TV
— MP3 Docking Stations
— AVR and DVD RX
— DSP Controlled Speakers (e.g. Subwoofers, Sound
Bars)
The CS47048 is programmed using the simple yet powerful
Cirrus proprietary DSP Composer^™ GUI development and pre-
production tuning tool. Processing chains may 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.
DSP programming could not be easier for the novice or small
engineering development group. DSP Composer provides the
programmer with faster time-to-market opportunities and the
ability to implement custom code.
The CS47048 is available in a 100-pin LQFP package with
exposed pad for better thermal characteristics. Both
Commercial (0 C to +70 C) and Automotive (-40 C to +85 C)
temperature grades.
Ordering Information:
See page 30 for ordering information
E ^E _{ADC’s&DAC’soperate}
in Single ended or
Differential mode
DBC
(I²C Slave)
PLL
Clock
Manager
Timers GPIO
ID ^{D I2S/}
TDM /
SPDIF
x4
F I2S/
TDM
Coyote32
text
32-bit DSP
S
R
8ch
C
2
DAC0
DAC1
DAC2
DAC3
DAC4
DAC5
DAC6
DAC7
N _ADC0/1
Stereo Inputs
On Analog in
CO ^ADC2/3
S
R 4ch
C
1
x8
DMA
ROM
PIC
RAM
ROM
RAM
Y
P
ROM
RAM
S
8ch R
C
3
SRC3 has 8
independent Channels
for In or Out
x2
I²S / TDM
SPI / I²C
Control
32K x 32-bit SRAM with three 2K blocks
Assignable to Program or Y Data memory
x2
I²S / TDM /
SPDIF
Advance Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright 2008 Cirrus Logic
CONFIDENTIAL
OCT ’08
DS787A7