Cirrus-logic CS4221 Manuel d'utilisateur
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
Cirrus Logic, Inc. 1999
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
24-Bit Stereo Audio Codec with 3V Interface
Features
l 100 dB Dynamic Range A/D Converters
l 100 dB Dynamic Range D/A Converters
l 105 dB DAC Signal-to-Noise Ratio (EIAJ)
l Analog Volume Control (CS4221 only)
l Differential Inputs / Outputs
l On-chip Anti-aliasing and Output Smoothing
Filters
l De-emphasis for 32, 44.1 and 48 kHz
l Supports Master and Slave Modes
l Single +5 V power supply
l On-Chip Crystal Oscillator
l 3 - 5 V Digital Interface
Description
The CS4220/1 is a highly integrated, high performance,
24-bit, audio codec providing stereo analog-to-digital
and stereo digital-to-analog converters using delta-sig-
ma conversion techniques. The device operates from a
single +5 V power supply, and features low power con-
sumption. Selectable de-emphasis filter for 32, 44.1, and
48 kHz sample rates is also included.
The CS4221 also includes an analog volume control ca-
pable of 113.5 dB attenuation in 0.5 dB steps. The
analog volume control architecture preserves dynamic
range during attenuation. Volume control changes are
implemented using a “soft” ramping or zero crossing
technique.
Applications include digital effects processors, DAT, and
multitrack recorders.
ORDERING INFORMATION
CS4220-KS -10 to +70 °C 28-pin SSOP
CS4221-KS -10 to +70 °C 28-pin SSOP
CDB4220/1 Evaluation Board
I
SCL/CCLK SDA/CDIN AD0/CS MCLK VD VA
RST
LRCK
SCLK
SDIN
SDOUT
DGND AGND
AOUTL+
AOUTL-
AOUTR+
AOUTR-
AINL-
AINL+
AINR-
AINR+
Control Port
Serial Audio Data Interface
Digital Filters
with De-Emphasis
Digital Filters
Left
DAC
Right
DAC
Analog Low Pass
and Output Stage
Voltage
Reference
Left
ADC
Right
ADC
Volume
Control
(
DIF1
)(
DIF0
)(
DEM0
)
IC/SPI
(
DEM1
)
2
Clock OSC
()=CS4220
Volume
Control
V
L
XTI XTO
*
=CS4221
*
*
APR ‘00
DS284PP3
CS4220
CS4221
- Features 1
- Description 1
- CS4220 CS4221 10
- • Notes • 31
Résumé du contenu
Page 1 - Description
Preliminary Product InformationThis document contains information for a new product.Cirrus Logic reserves the right to modify this product without not
Page 2
CS4220 CS422110 DS284PP32. TYPICAL CONNECTION DIAGRAM — CS4220AINL+AINL-1 µF+ 0.1 µF2Ω0.1 µF + 1µF+5VSupply21 6VA VDFerrite Bead2.2 nF150Ω150ΩAINR+AIN
Page 3
CS4220 CS4221DS284PP3 113. TYPICAL CONNECTION DIAGRAM — CS4221AINL+AINL-1 µF+ 0.1 µF2Ω0.1 µF + 1µF+5VSupply21 6VA VDFerrite Bead2.2 nF150Ω150ΩAINR+AIN
Page 4
CS4220 CS422112 DS284PP34. REGISTER QUICK REFERENCE - CS4221Addr Function 7 6 5 4 3 2 1 00h Reserved Reserved Reserved Reserved Reserved Reserved Rese
Page 5
CS4220 CS4221DS284PP3 135. REGISTER DESCRIPTIONS - CS4221Note: All registers are read/write in I2C mode and write-only in SPI mode, unless otherwise
Page 6
CS4220 CS422114 DS284PP35.1.6 CLOCKING ERROR (CLKE) (READ ONLY)Default = 00 - No error1 - Error5.2 DAC Control (address 02h)5.2.1 MUTE ON CONSECUTIVE
Page 7
CS4220 CS4221DS284PP3 155.2.4 SOFT RAMP STEP RATE (RMP)Default = 0000 - 1 step per 8 LRCK’s01 - 1 step per 4 LRCK’s10 - 1 step per 16 LRCK’s11 - 1 ste
Page 8
CS4220 CS422116 DS284PP35.5 DSP Port Mode (address 05h)5.5.1 DE-EMPHASIS CONTROL (DEM)Default = 0000 - 44.1 kHz de-emphasis setting01 - 48 kHz de-emph
Page 9
CS4220 CS4221DS284PP3 175.6 Converter Status Report (Read Only) (address 06h)5.6.1 LEFT AND RIGHT CHANNEL ACCEPTANCE BIT (ACCR-ACCL)Default = 00 - Req
Page 10 - CS4220 CS4221
CS4220 CS422118 DS284PP36. PIN DESCRIPTIONS — CS4220123456782122232425262728NCRSTAOUTL-AOUTL+AOUTR+AOUTR-AGNDVASDOUTDGNDVDSCLKLRCKXTIXTONC9101112 1718
Page 11
CS4220 CS4221DS284PP3 19DIF0, DIF1 10,11 Digital Interface Format (Input) - The required relationship between the left/right clock, serial clock and
Page 12
CS4220 CS42212 DS284PP3TABLE OF CONTENTS1. CHARACTERISTICS AND SPECIFICATIONS ...
Page 13
CS4220 CS422120 DS284PP37. PIN DESCRIPTIONS — CS4221123456782122232425262728NCRSTAOUTL-AOUTL+AOUTR+AOUTR-AGNDVASDOUTDGNDVDSCLKLRCKXTIXTONC9101112 1718
Page 14
CS4220 CS4221DS284PP3 21SDIN 9 Serial Data Input (Input) - Two’s complement MSB-first serial data is input on this pin. The required relationship be
Page 15
CS4220 CS422122 DS284PP38. APPLICATIONS8.1 OverviewThe CS4220 is a stand-alone device controlledthrough dedicated pins. The CS4221 is controlledwith a
Page 16
CS4220 CS4221DS284PP3 23Once RST goes high, the control port is functionaland the desired settings should be loaded. The CS4220/1 will also enter powe
Page 17
CS4220 CS422124 DS284PP38.9 Memory Address Pointer (MAP)8.9.1 AUTO-INCREMENT CONTROL (INCR)Default = 00 - Disabled1 - Enabled8.9.2 REGISTER POINTER (M
Page 18
CS4220 CS4221DS284PP3 25 Master SlaveI2S, up to 24-bit data XTI = 256, 384, 5
Page 19
CS4220 CS422126 DS284PP3Figure 11. Serial Audio Format 3Master SlaveRight-justified, 20-bit data XTI =
Page 20
CS4220 CS4221DS284PP3 27Figure 14. 2- and 3-Pole Butterworth FiltersGaindB-10 dB0 dBFrequencyT2 = 15 µsT1 = 50 µsF1 F2Figure 15. De-emphasis CurveSi
Page 21
CS4220 CS422128 DS284PP39. ADC/DAC FILTER RESPONSE Figure 17. ADC Filter Response Figure 18. ADC Passband RippleFigure 19. ADC Tr
Page 22
CS4220 CS4221DS284PP3 2910.PARAMETER DEFINITIONSDynamic RangeThe ratio of the full scale rms value of the signal to the rms sum of all other spectral
Page 23
CS4220 CS4221DS284PP3 35.7.1 Master Clock Control (MCK) ... 176. PIN
Page 24
CS4220 CS422130 DS284PP311.PACKAGE DIMENSIONS Notes: 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do includ
Page 25
• Notes •
Page 27
CS4220 CS42214 DS284PP31. CHARACTERISTICS AND SPECIFICATIONSANALOG CHARACTERISTICS (TA = 25° C; VA, VD = +5 V; Full Scale Input Sine wave, 997 Hz; Fs
Page 28
CS4220 CS4221DS284PP3 5ANALOG CHARACTERISTICS (CONTINUED) Notes: 5. The passband and stopband edges scale with frequency. For input word rates, Fs,
Page 29
CS4220 CS42216 DS284PP3DIGITAL CHARACTERISTICS (TA = 25° C; VA, VD = 4.75V - 5.25V)ABSOLUTE MAXIMUM RATINGS (AGND, DGND = 0 V, all voltages with respe
Page 30
CS4220 CS4221DS284PP3 7SWITCHING CHARACTERISTICS (TA = 25° C; VA, VD = 4.75 V - 5.25 V; outputs loaded with 30 pF)Notes: 10. After powering up the CS4
Page 31 - • Notes •
CS4220 CS42218 DS284PP3SWITCHING CHARACTERISTICS - CONTROL PORT - SPI MODE (CS4221) (TA = 25° C; VA, VD = 4.75 V - 5.25 V; Inputs: Logic 0 = DGND,
Page 32
CS4220 CS4221DS284PP3 9SWITCHING CHARACTERISTICS - CONTROL PORT - I2C MODE (CS4221) (TA = 25° C; VA, VD = 4.75 V - 5.25 V; Inputs: Logic 0 = DGND, L
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