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PDF CS4811 Data sheet ( Hoja de datos )
| Número de pieza | CS4811 | |
| Descripción | Fixed Function Multi-Effects Audio Processor | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS4811
Fixed Function Multi-Effects Audio Processor
Features
Description
l Audio Processor for embedded
reverb/effects applications
– Proprietary 24-bit Audio Processing Engine
– On-chip RAM (No external RAM required)
– On-chip 24-bit ∆Σ ADC with 100 dB Dyn. Range
– On-chip 24-bit ∆Σ DAC with 100 dB Dyn. Range
– Automatically boots firmware from external
serial EEPROM
l Firmware available for Guitar Effects or Mixer
Effects applications
l Single +5 V Supply
l 100-pin Metric Quad Flat Pack (MQFP)
The CS4811 is a complete audio effects processing
system on a chip. This device integrates a proprietary 24-
bit audio processing engine, large on-chip RAM
memories, and a high performance 24-bit audio codec. A
serial control port allows the device to boot firmware from
a compact and low cost SPI or I2C serial EEPROM. Other
features such as single +5 V operation simplify system
design.
Firmware for the CS4811 is provided by Cirrus Logic.
There are two different firmware codes available; one for
guitar effects and one for audio mixers. The guitar effects
firmware provides a host of electric guitar effects includ-
ing spring reverb, delay, chorus, flange and tremolo.
The mixer effects firmware provides a suite of effects
such as digital reverb, delay and chorus which are suit-
able for use in audio mixers, karaoke and acoustic
instrument amplifiers. The CDB4811GTR and
CDB4811MXR evaluation boards allow easy evaluation
of the CS4811 device and the associated firmware.
ORDERING INFO
CS4811-KM
CDB4811GTR-01
CDB4811MXR-01
-10 to +70°C 100-pin MQFP
Guitar Effects Evaluation Board
Mixer Effects Evaluation Board
I
SPI/I2C SCL/CCLK SDA/CDOUT AD1/CDIN
AD0/CS
RST
XTO CLOCK
MANAGER
XTI
SERIAL CONTROL PORT (SPI or I2C)
AOUT+
24-BIT AUDIO
DIGITAL FILTER
DAC
AIN+ PROCESSING
.comAIN- ADC
ENGINE
AOUT-
RAM
VOLTAGE
REFERENCE
CMOUT
CMFILT+
CMFILT-
t4UOVL PIO0 PIO1 PIO2 PIO3
heeAdvance Product Information
ataSP.O. Box 17847, Austin, Texas 78760
.D(512) 445 7222 FAX: (512) 445 7581
www http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2000
(All Rights Reserved)
SEP ‘00
DS486PP2
1
1 page  
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CS4811
DAC CHARACTERISTICS (TA = 25° C; VA, VD = + 5 V; Full Scale Output Sine wave, 997 Hz; Fs =
48 kHz; XTI = 12.288 MHz; Measurement Bandwidth is 20 Hz to 20 kHz)
Parameters
Symbol Min Typ Max Units
Analog Output Characteristics - Minimum Attenuation, 10 kΩ, 100 pF load; unless otherwise specified.
DAC Resolution
16 - 24 Bits
Dynamic Range
(DAC not muted, A weighted)
95 100
-
dB
Total Harmonic Distortion + Noise
THD+N - -90 -85 dB
Offset Voltage (differential)
(Note 6)
- -20±5 -
mV
Offset Voltage (V+/V- relative to CMOUT)
(Note 6)
- -45/-28 -
mV
Full Scale Output Voltage
Gain Drift
(Differential)
(Note 2)
1.9 2.0 2.1 Vrms
- 100 - ppm/°C
Out of Band Energy
(Fs/2 to 2Fs, Note 2)
- -60 - dBFS
Analog Output Load
Resistance
Capacitance
10 -
- kΩ
- - 100 pF
Analog Loopback Performance
Signal-to-Noise Ratio (CCIR-2K weighted, -20 dB input)
CCIR-2K
-
74
-
dB
Power Supply
Power Supply Current
Operating
Power Down
(Note 7)
- 200 -
-1-
mA
mA
Power Supply Rejection
(1 kHz, 10 mVrms,, Note 2)
- 50 -
dB
Notes: 6. Measured with DAC calibration disabled.
7. Measured with XTI clock disabled.
Specifications are subject to change without notice.
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VD VD
2.2 K
2.2 K
I2C
EEPROM
A0
A1
CS4811
63 SCL/CCLK
62 SDA/CDOUT
68 AD0/CS
67 AD1/CDIN
A2
D
VD
D
69 SPI/I2C
Reset
Circuit
RESET
72 RST
Figure 4. Typical Connection Diagram, I2C Mode
VD VD
2.2 K
2.2 K
CS4811
SPI
EEPROM
63 SCL/CCLK
62 SDA/CDOUT
68 AD0/CS
67 AD1/CDIN
69 SPI/I2C
www.DataSheet4U.comDS486PP2
Reset
Circuit
RESET
D
72 RST
Figure 5. Typical Connection Diagram, SPI Mode
CS4811
11
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| PDF Descargar | [ Datasheet CS4811.PDF ] | |
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